Table of Contents (Print)

Total Page:16

File Type:pdf, Size:1020Kb

Table of Contents (Print) PHYSICAL REVIEW D PERIODICALS For editorial and subscription correspondence, Postmaster send address changes to: please see inside front cover (ISSN: 1550-7998) APS Subscription Services P.O. Box 41 Annapolis Junction, MD 20701 THIRD SERIES, VOLUME 99, NUMBER 3 CONTENTS D1 FEBRUARY 2019 The Table of Contents is a total listing of Parts A and B. Part A consists of articles 031101–035002, and Part B articles 035003–039901(E) PART A RAPID COMMUNICATIONS þ ¯ Observation of Ds → pn and confirmation of its large branching fraction (8 pages) ......................................... 031101(R) M. Ablikim et al. (BESIII Collaboration) Æ → 0 0 Æ Measurements of branching fraction and direct CP asymmetry in B KSKSK and a search Æ → 0 0πÆ for B KSKS (9 pages) ......................................................................................................... 031102(R) A. B. Kaliyar et al. (Belle Collaboration) Impact of final state interactions on neutrino-nucleon pion production cross sections extracted from neutrino-deuteron reaction data (6 pages) .......................................................................................... 031301(R) S. X. Nakamura, H. Kamano, and T. Sato Lattice QCD study of doubly charmed strange baryons (6 pages) ................................................................ 031501(R) Nilmani Mathur and M. Padmanath Probing the Higgs Yukawa coupling to the top quark at the LHC via single top þ Higgs production (6 pages) ......... 031701(R) Vernon Barger, Kaoru Hagiwara, and Ya-Juan Zheng Freezing in the hierarchy problem (6 pages) .......................................................................................... 031702(R) Timothy Cohen, Raffaele Tito D’Agnolo, and Matthew Low Bounds on rare decays of η and η0 mesons from the neutron EDM (6 pages) .................................................. 031703(R) Alexey S. Zhevlakov, Mikhail Gorchtein, Astrid N. Hiller Blin, Thomas Gutsche, and Valery E. Lyubovitskij ARTICLES pffiffiffi Measurement of eþe− → KþK− cross section at s ¼ 2.00 – 3.08 GeV (11 pages) ........................................... 032001 M. Ablikim et al. (BESIII Collaboration) þ → 0 þðπ0Þ Measurements of the absolute branching fractions and CP asymmetries for D KS;LK (12 pages) .............. 032002 M. Ablikim et al. (BESIII Collaboration) Observation of Bþ → pΛ¯ KþK− and Bþ → p¯ ΛKþKþ (9 pages) .................................................................. 032003 P.-C. Lu et al. (The Belle Collaboration) Measurements using the inelasticity distribution of multi-TeV neutrino interactions in IceCube (20 pages) ............... 032004 M. G. Aartsen et al. (IceCube Collaboration) Measurement of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos at Super-Kamiokande (11 pages) .................................................................................................... 032005 L. Wan et al. (Super-Kamiokande Collaboration) Observation of ψð3686Þ → pp¯ η0 and improved measurement of J=ψ → pp¯ η0 (10 pages) .................................... 032006 M. Ablikim et al. (BESIII Collaboration) Copyright 2019 American Physical Society (Continued) 2470-0010(20190201)99:3;1-M This paper was highlighted in the APS publication Physics (physics.aps.org). By suggesting a few manuscripts each week, we hope to promote reading across fields. Please see our Announcement Phys. Rev. D 90, 010001 (2014). CONTENTS - Continued PHYSICAL REVIEW D THIRD SERIES, VOLUME 99, NUMBER 3 D1 FEBRUARY 2019 Measurement of atmospheric tau neutrino appearance with IceCube DeepCore (33 pages) .................................. 032007 M. G. Aartsen et al. (IceCube Collaboration) Search for invisible modes of nucleon decay in water with the SNO+ detector (13 pages) .................................. 032008 M. Anderson et al. (The SNO+ Collaboration) Constraints on millicharged particles with low-threshold germanium detectors at Kuo-Sheng Reactor Neutrino Laboratory (8 pages) ....................................................................................................... 032009 L. Singh, J. W. Chen, H. C. Chi, C.-P. Liu, M. K. Pandey, H. T. Wong, C. P. Wu, M. Agartioglu, M. Deniz, H. B. Li, S. T. Lin, V. Sharma, M. K. Singh, V. Singh, and Q. Yue (TEXONO Collaboration) þ þ þ Measurement of the absolute branching fractions of Λc → Ληπ and Σð1385Þ η (9 pages) .................................. 032010 M. Ablikim et al. (BESIII Collaboration) pffiffiffi Search for long-lived particles decaying into displaced jets in proton-proton collisions at s ¼ 13 TeV (28 pages) ....... 032011 A. M. Sirunyan et al. (CMS Collaboration) Measurements of isospin asymmetry and difference of direct CP asymmetries in inclusive B → Xsγ decays (13 pages) 032012 S. Watanuki et al. (The Belle Collaboration) Constraints on neutrino lifetime from the Sudbury Neutrino Observatory (10 pages) ......................................... 032013 B. Aharmim et al. (SNO Collaboration) pffiffiffi Search for pair production of second-generation leptoquarks at s ¼ 13 TeV (26 pages) ................................... 032014 A. M. Sirunyan et al. (CMS Collaboration) Electroweak sector under scrutiny: A combined analysis of LHC and electroweak precision data (16 pages) ............ 033001 Eduardo da Silva Almeida, Alexandre Alves, N. Rosa-Agostinho, Oscar J. P. Éboli, and M. C. Gonzalez–Garcia − Weak decays of the axial-vector tetraquark Tbb;u¯ d¯ (11 pages) ..................................................................... 033002 S. S. Agaev, K. Azizi, B. Barsbay, and H. Sundu Leptonic unitarity triangles: RGE running effects and μ-τ reflection symmetry breaking (19 pages) ....................... 033003 Jing-yu Zhu Polarization fraction measurement in same-sign WW scattering using deep learning (5 pages) .............................. 033004 Junho Lee, Nicolas Chanon, Andrew Levin, Jing Li, Meng Lu, Qiang Li, and Yajun Mao U-spin sum rules for CP asymmetries of three-body charmed baryon decays (8 pages) ...................................... 033005 Yuval Grossman and Stefan Schacht Testing WWγ vertex in radiative muon decay (9 pages) ............................................................................ 033006 Anirban Karan, Rahul Sinha, and Rusa Mandal Matching relations for decoupling in the standard model at two loops and beyond (16 pages) .............................. 033007 Stephen P. Martin Scouring meson decays for true muonium (6 pages) ................................................................................ 033008 Yao Ji and Henry Lamm CP transformed mixed μτ antisymmetry for neutrinos and its consequences (13 pages) ...................................... 033009 Roopam Sinha, Probir Roy, and Ambar Ghosal Reinterpreting the weak mixing angle from atomic parity violation in view of the Cs neutron rms radius measurement from COHERENT (6 pages) ................................................................................................................ 033010 M. Cadeddu and F. Dordei WW fusion and Higgsstrahlung interplay in Higgs precision tests with the e−eþ → νν¯h process (8 pages) ............... 033011 Yang Zhang Constraints on the solar Δm2 using Daya Bay and RENO data (6 pages) ...................................................... 033012 Seon-Hee Seo and Stephen J. Parke Quark-hadron continuity under rotation: Vortex continuity or boojum? (8 pages) .............................................. 034001 Chandrasekhar Chatterjee, Muneto Nitta, and Shigehiro Yasui Infrared massive gluon propagator from a BRST-invariant Gribov horizon in a family of covariant gauges (8 pages) ..... 034002 Bruno W. Mintz, Leticia F. Palhares, Giovani Peruzzo, and Silvio P. Sorella Regge phenomenology of the Nà and Δà poles (14 pages) ........................................................................ 034003 J. A. Silva-Castro, C. Fernández-Ramírez, M. Albaladejo, I. V. Danilkin, A. Jackura, V. Mathieu, J. Nys, A. Pilloni, A. P. Szczepaniak, and G. Fox (Joint Physics Analysis Center) Precision predictions at N3LO for the Higgs boson rapidity distribution at the LHC (6 pages) ............................. 034004 Falko Dulat, Bernhard Mistlberger, and Andrea Pelloni (Continued) This paper was highlighted in the APS publication Physics (physics.aps.org). By suggesting a few manuscripts each week, we hope to promote reading across fields. Please see our Announcement Phys. Rev. D 90, 010001 (2014). CONTENTS - Continued PHYSICAL REVIEW D THIRD SERIES, VOLUME 99, NUMBER 3 D1 FEBRUARY 2019 Does the bottomonium counterpart of Xð3872Þ exist? (5 pages) .................................................................. 034005 Zhi-Yong Zhou, Dian-Yong Chen, and Zhiguang Xiao Light and heavy flavor dijet production and dijet mass modification in heavy ion collisions (17 pages) .................. 034006 Zhong-Bo Kang, Jared Reiten, Ivan Vitev, and Boram Yoon Production and polarization of prompt ϒðnSÞ in the improved color evaporation model using the kT -factorization approach (11 pages) ................................................................................................ 034007 Vincent Cheung and Ramona Vogt Transverse momentum resummation for s-channel single top quark production at the LHC (8 pages) ..................... 034008 Peng Sun, Bin Yan, and C.-P. Yuan Multiparticle azimuthal angular correlations in pA collisions (10 pages) ........................................................ 034009 Cheng Zhang, Manyika Kabuswa Davy, Yu Shi, and Enke Wang ¯ à ¯ à D D Σc three-body system (8 pages) .................................................................................................
Recommended publications
  • Diffractive Dissociation of Alpha Particles As a Test of Isophobic Short-Range Correlations Inside Nuclei ∗ Jennifer Rittenhouse West A, , Stanley J
    Physics Letters B 805 (2020) 135423 Contents lists available at ScienceDirect Physics Letters B www.elsevier.com/locate/physletb Diffractive dissociation of alpha particles as a test of isophobic short-range correlations inside nuclei ∗ Jennifer Rittenhouse West a, , Stanley J. Brodsky a, Guy F. de Téramond b, Iván Schmidt c a SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94309, USA b Laboratorio de Física Teórica y Computacional, Universidad de Costa Rica, 11501 San José, Costa Rica c Departamento de Física y Centro Científico Tecnológico de Valparáiso-CCTVal, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso, Chile a r t i c l e i n f o a b s t r a c t Article history: The CLAS collaboration at Jefferson Laboratory has compared nuclear parton distributions for a range Received 15 January 2020 of nuclear targets and found that the EMC effect measured in deep inelastic lepton-nucleus scattering Received in revised form 9 April 2020 has a strongly “isophobic” nature. This surprising observation suggests short-range correlations between Accepted 9 April 2020 neighboring n and p nucleons in nuclear wavefunctions that are much stronger compared to p − p or n − Available online 14 April 2020 n correlations. In this paper we propose a definitive experimental test of the nucleon-nucleon explanation Editor: W. Haxton of the isophobic nature of the EMC effect: the diffractive dissociation on a nuclear target A of high energy 4 He nuclei to pairs of nucleons n and p with high relative transverse momentum, α + A → n + p + A + X. The comparison of n − p events with p − p and n − n events directly tests the postulated breaking of isospin symmetry.
    [Show full text]
  • Novel Features of Nuclear Chromodynamics
    SLAC-PUB-16868 Novel Features of Nuclear Chromodynamics Stanley J. Brodsky1 SLAC National Accelerator Laboratory Stanford University, Stanford, CA, 94309 the date of receipt and acceptance should be inserted later Abstract. I review a number of QCD topics where the nuclear environment provides new insights into fundamental aspects of the strong interactions. Quarks, gluons, and QCD in nuclear reactions PACS. 2 4.85.+p Pn Pn 1 Introduction where i xi = 1; i k i = 0: It is convenient to choose the \light-cone" gauge ?A+ = 0 so that the gluons only One of the most challenging problems in QCD is to un- have physical polarization Sz = 1 and no ghosts appear. H ± derstand nuclei in terms of their fundamental quark and Remarkably, the n (xi; k i; λi) LFWFs are independent ? gluon degrees of freedom. Even the deuteron has exotic of the hadron's momentum P +; P . There is no Lorentz ? features such as its \hidden" color degrees of freedom. In contraction of LFWFs [3,4]. The structure functions mea- this article I will review some new perspectives for nuclear sured in deep inelastic scattering on a fixed target in the physics, such as nuclear form factors and the nuclear force rest frame is the same structure function measured in an at short distances, which are consequences of fundamen- electron-ion coliider. In fact, the LF formalism is Poincare' tal features of QCD [1]. Conversely, the nuclear environ- invariant { all formulae are independent of the observer's ment can bring new insights of hadron physics, such as Lorentz frame.
    [Show full text]
  • Arxiv:1810.00233V1 [Hep-Ph] 29 Sep 2018 233.2 Mev and 455.6 Mev Respectively) Including O(Α) More Complicated Inclusive J/Ψ → Xhγ [45]
    Scouring meson decays for true muonium Yao Ji∗ Institut f¨urTheoretische Physik, Universit¨atRegensburg, Regensburg 93040, Germany Henry Lamm† Department of Physics, University of Maryland, College Park, MD 20742 (Dated: October 2, 2018) Rare meson decay experiments promise to measure branching ratios as small as 10−13. This presents an opportunity to discover the µ+µ− bound state true muonium. We consider a set of possible channels, all with branching ratios above ∼ 10−11. For the electromagnetic decays η/η0 → + − 2 0 (µ µ )γ, theoretical and phenomenological form factors Fη/η0γγ∗ (Q ) allow predictions of BR(η → (µ+µ−)γ) ∼ 4.8 × 10−10 and BR(η0 → (µ+µ−)γ) ∼ 3.7 × 10−11 at the 5% level. Discussion of experimental prospects and potential backgrounds are made. Within the Standard Model, only the Higgs interaction breaks lepton universality, but the discovery of neutrino TABLE I. Meson decay branching ratios involving photons considered in this work. The first two are electromagnetic masses implies that at least one beyond-Standard Model decays, while the others are strong decays. Branching ratios modification is required. Many precision physics searches to true muonium can be estimated by multiplying by α4 ≈ have been undertaken in the charged lepton sector to de- 2.8 × 10−9 tect additional lepton universality violations. Measure- ments of (g − 2)` [1], charge radii [2,3], and B meson Channel BR decays [4–14] have each shown hints of discrepancy. The −1 + − η → γγ 4.0 × 10 bound state of (µ µ ), true muonium, or TM for short, 0 −2 presents another avenue for investigating lepton univer- η → γγ 2.2 × 10 0 −1 sality [15, 16].
    [Show full text]
  • Hadron Collider Physics
    KEK-PH Lectures and Workshops Hadron Collider Physics Zhen Liu University of Maryland 08/05/2020 Part I: Basics Part II: Advanced Topics Focus Collider Physics is a vast topic, one of the most systematically explored areas in particle physics, concerning many observational aspects in the microscopic world • Focus on important hadron collider concepts and representative examples • Details can be studied later when encounter References: Focus on basic pictures Barger & Philips, Collider Physics Pros: help build intuition Tao Han, TASI lecture, hep-ph/0508097 Tilman Plehn, TASI lecture, 0910.4182 Pros: easy to understand Maxim Perelstein, TASI lecture, 1002.0274 Cons: devils in the details Particle Data Group (PDG) and lots of good lectures (with details) from CTEQ summer schools Zhen Liu Hadron Collider Physics (lecture) KEK 2020 2 Part I: Basics The Large Hadron Collider Lyndon R Evans DOI:10.1098/rsta.2011.0453 Path to discovery 1995 1969 1974 1969 1979 1969 1800-1900 1977 2012 2000 1975 1983 1983 1937 1962 Electric field to accelerate 1897 1956 charged particles Synchrotron radiation 4 Zhen Liu Hadron Collider Physics (lecture) KEK 2020 4 Zhen Liu Hadron Collider Physics (lecture) KEK 2020 5 Why study (hadron) colliders (now)? • Leading tool in probing microscopic structure of nature • history of discovery • Currently running LHC • Great path forward • Precision QFT including strong dynamics and weakly coupled theories • Application to other physics probes • Set-up the basic knowledge to build other subfield of elementary particle physics Zhen Liu Hadron Collider Physics (lecture) KEK 2020 6 Basics: Experiment & Theory Zhen Liu Hadron Collider Physics (lecture) KEK 2020 7 Basics: How to make measurements? Zhen Liu Hadron Collider Physics (lecture) KEK 2020 8 Part I: Basics Basic Parameters Basics: Smashing Protons & Quick Estimates Proton Size ( ) Proton-Proton cross section ( ) Particle Physicists use the unit “Barn”2 1 = 100 The American idiom "couldn't hit the broad side of a barn" refers to someone whose aim is very bad.
    [Show full text]
  • Hadron Physics at the Charm and Bottom Thresholds and Other Novel QCD Physics Topics at the NICA Accelerator Facility
    SLAC-PUB-15050 Hadron Physics at the Charm and Bottom Thresholds and Other Novel QCD Physics Topics at the NICA Accelerator Facility Stanley J. Brodsky1 1SLAC National Accelerator Laboratory Stanford University, Stanford, California 94309, USA The NICA collider project at the Joint Institute for Nuclear Research in Dubna will have the capability of colliding protons, polarized deuterons, and nuclei at an effective nucleon-nucleon center- p of mass energy in the range sNN = 4 to 11 GeV. I briefly survey a number of novel hadron physics processes which can be investigated at the NICA collider. The topics include the formation of exotic heavy quark resonances near the charm and bottom thresholds, intrinsic strangeness, charm, and bottom phenomena, hidden-color degrees of freedom in nuclei, color transparency, single-spin asymmetries, the RHIC baryon anomaly, and non-universal antishadowing. I. INTRODUCTION The NICA collider project at the Joint Institute for Nuclear Research in Dubna [1,2] will have the capability of colliding nucleons, polarized deuterons, and nuclei at an effective nucleon-nucleon center-of mass energy in the range p sNN = 4 to 11 GeV. In tis brief report, I will discuss a number of novel hadron physics topics which can be investigated at the NICA collider. The topics include the formation of exotic heavy quark resonances near the charm and bottom thresholds, intrinsic strangeness, charm, and bottom phenomena, hidden-color degrees of freedom in nuclei, color transparency, single-spin asymmetries, the RHIC baryon anomaly, and non-universal antishadowing. II. THE ULTRA-LOW ENERGY DOMAIN USING VARIABLE-ANGLE COLLISIONS If the interaction region at NICA is designed so that A and B can collide at a variable finite center of mass angle 2 2 2 0 < θ < π, then the effective CM energy squared s = (pA + pB) = MA + MB + 2EAEB(1 − βAβB cos θ) will span from very low energies to beyond the bottom flavor threshold.
    [Show full text]
  • Redtop-Carosi-1.Pdf
    REDTOP Rare Eta Decays with a TPC for Optical Photons R. Carosi, INFN Pisa Workshop on Physics Beyond Colliders CERN, 16 jan. 2019 For the REDTOP Collaboration REDTOP Key Points ● Yield of 8x1012 h mesons/year for 1017 POT (x-section >10 mbarns, 1.8 GeV proton beam) – Possibly ~8x1010 h’ mesons/years in a second phase (3.5 GeV protons) ● 4p detector coverage (almost) ● 3 (5) “golden” channels (will be described in details in the proposal) – But at least ~20 interesting channels (simmetry violations, new particles and forces searches, precision measurements) – 4 benchmark channels are studied in details for the BPC (2 of them are golden) ● Innovative detector techniques – Dual readout calorimeter – Optical TPC ● Detector blind to protons and slow pions ● Significant improvement (106 in some cases) to the current limits. ● http://redtop.fnal.gov Why the h ? ● Decays are flavor conserving ● Eigenstate of C, P, CP and G: IGJPC=0+0-+ – can be used to test C and CP invariances ● Very narrow state (1.3 keV) – overconstraints events → low background ● Strong decays forbidden in lowest order by C, P, CP, G, and Isospin invariance ● EM decays forbidden in lowest order by C and angular momentum conservation – contributions from higher orders are enhanced by a factor of ~100,000 – h decays with leptons in the final state have very small SM backgrounds – Internal loops and lepton pairs can probe new physics ● h is an excellent laboratory to search for physics Beyond Standard Model BSM Physics Program (h and h’ factory) C, T, CP-violation CP Violation via Dalitz plot mirror asymmetry: h → po p+p- CP Violation (Type I – P and T odd , C even): h-> 4po → 8g CP Violation (Type II - C and T odd , P even): h → po l+l and h → 3g Test of CP invariance via m longitudinal polarization: h → m+m – Test of CP invariance via g* polarization studies:h → p+p –e+e – and h → p+p –m+m– Test of CP invariance in angular correlation studies:h → m+m – e+e – Test of T invariance via m transverse polarization: h → pom+m – and h → g m+m – CPT violation: m polariz.
    [Show full text]
  • Rare Eta Decays with a TPC for Optical Photons
    The REDTOP project: Rare Eta Decays with a TPC for Optical Photons Brenda Fabela∗† Universidad Autónoma de Zacatecas E-mail: [email protected] Maria Isabel Pedraza Benemérita Universidad Autónoma de Puebla E-mail: [email protected] Corrado Gatto Istituto Nazionale di Fisica Nucleare - Sezione di Napoli E-mail: [email protected] The h/h0 mesons are almost unique in the particle universe since they are Goldstone boson and the dynamics of their decays are strongly constrained. Because the h and h0 have all zero quantum numbers, decays that violate conservation laws can occur without interfering with a corresponding current. The integrated eta meson samples collected in earlier experiments have been less than ≈ 108 events, limiting considerably the search for such rare decays. The h0 sample is even more scarce. A new experiment REDTOP, is being proposed at the proton booster of Fermilab with the intent of collecting more than 1012 triggers/year for studies of rare h decays. Such statistics are sufficient for investigating several symmetry violations, and for searching for new particles beyond the Standard Model. The physics program, the accelerator systems and the detector for REDTOP were presented in this conference. 38th International Conference on High Energy Physics 3-10 August 2016 Chicago, USA ∗Speaker. †for the REDTOP collaboration. c Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). http://pos.sissa.it/ The REDTOP project Brenda Fabela 1. Introduction REDTOP (Rare Eta Decays with a TPC for Optical Photons) is a new project being proposed at Fermilab.
    [Show full text]
  • Lhcb: Stealth Bosons 4Th Red LHC Workshop (Virtual) (4 – 6 November 2020)
    LHCb: Stealth bosons 4th Red LHC workshop (Virtual) (4 { 6 November 2020) Carlos V´azquezSierra CERN November 5, 2020 Carlos V´azquezSierra 4th Red LHC workshop (Virtual) November 5, 2020 1 / 18 The LHCb detector [IJMP A30 (2015) 1530022] LHCb is a 20 5 m GPD in the forward region (upgrade during LS2 { see backup). × Single-arm forward spectrometer (2 < η < 5) along the beamline (z). Tracking and vertexing systems Particle identification systems Side view π± e± VELO µ± TT RICH1 RICH2 Magnet # T1 T2 T3 Excellent vertexing resolution (fast mixing). M1 SPD HCAL Excellent mass resolution (low masses). PS/ECAL M2 M3 M4 M5 Excellent jet reconstruction and tagging capabilities { see backup. Carlos V´azquezSierra 4th Red LHC workshop (Virtual) November 5, 2020 2 / 18 The LHCb detector [IJMP A30 (2015) 1530022] LHCb is a 20 5 m GPD in the forward region (upgrade during LS2 { see backup). × Single-arm forward spectrometer (2 < η < 5) along the beamline (z). Tracking and vertexing systems Particle identification systems Side view Carlos V´azquezSierra 4th Red LHC workshop (Virtual) November 5, 2020 3 / 18 The LHCb detector [IJMP A30 (2015) 1530022] Hardware level L0: removed for Upgrade Ia (UIa). ! benefit for low mass searches. ! Software level HLT: Topological triggers on DV. ! Down to pT 80 MeV/c (µ). ! ∼ UIa: full event reco (30 MHz). ! benefit for exotic searches. ! Turbo (since 2015) lines: Any event part can be saved. ! Can work directly on them. ! Online µ-ID and jets in turbo. ! GPU-based HLT1 (Allen project) from UIa [Comp Soft Big Sci (2020) 4 7] Carlos V´azquezSierra 4th Red LHC workshop (Virtual) November 5, 2020 4 / 18 STEALTH physics @ LHCb [STEALTH physics @ LHCb] workshop (J.
    [Show full text]
  • Atoms in Flight the Remarkable Connections Between Atomic and Hadronic Physics
    SLAC-PUB-14757 Noname manuscript No. (will be inserted by the editor) SLAC-PUB-14757 Atoms in Flight The Remarkable Connections between Atomic and Hadronic Physics Stanley J. Brodsky Received: date / Accepted: date Abstract Atomic physics and hadron physics are both based on Yang Mills gauge theory; in fact, quantum electrodynamics can be regarded as the zero- color limit of quantum chromodynamics. I review a number of areas where the techniques of atomic physics provide important insight into the theory of hadrons in QCD. For example, the Dirac-Coulomb equation, which predicts the spectroscopy and structure of hydrogenic atoms, has an analog in hadron physics in the form of light-front relativistic equations of motion which give a remarkable first approximation to the spectroscopy, dynamics, and structure of light hadrons. The renormalization scale for the running coupling, which is unambiguously set in QED, leads to a method for setting the renormaliza- tion scale in QCD. The production of atoms in flight provides a method for computing the formation of hadrons at the amplitude level. Conversely, many techniques which have been developed for hadron physics, such as scaling laws, evolution equations, and light-front quantization have equal utility for atomic physics, especially in the relativistic domain. I also present a new perspective for understanding the contributions to the cosmological constant from QED and QCD. Keywords Quantum Electrodynamics Atomic Physics Hadron Physics Light-Front · · · 1 Introduction Quantum Electrodynamics, the fundamental theory of leptons and photons which underlies all of atomic and molecular physics, and Quantum Chromo- dynamics, the quark and gluon theory with three colors underlying hadronic Stanley J.
    [Show full text]
  • Discovering True Muonium in KL → Пμ+ Μ
    PHYSICAL REVIEW D 98, 053008 (2018) + − Discovering true muonium in KL → ðμ μ Þγ Yao Ji * Institut für Theoretische Physik, Universität Regensburg, Regensburg 93040, Germany † Henry Lamm Department of Physics, University of Maryland, College Park, Maryland 20742, USA (Received 15 June 2017; published 25 September 2018) þ − −13 Theoretical and phenomenological predictions of BRðKL → ðμ μ ÞγÞ ∼ 7 × 10 are presented for 2 Ã ð Þ different model form factors FKLγγ Q . These rates are comparable to existing and near-term rare KL decay searches at J-PARC and CERN, indicating a discovery of true muonium is possible. Further discussion of potential backgrounds is made. DOI: 10.1103/PhysRevD.98.053008 Lepton universality predicts differences in electron and the off-shell photon invariant mass squared. This two-body muon observables should occur only due to their mass decay is the reach of rare kaon decay searches and is an þ − difference. Measurements of ðg − 2Þl [1], nuclear charge attractive process for discovering ðμ μ Þ. The decay has radii [2,3], and rare meson decays [4] have shown hints of simple kinematics with a single, monochromatic photon ðμþμ−Þ þ − violations to this universality. The bound state of , (of Eγ ¼ 203.6 MeV if the KL is at rest) plus ðμ μ Þ which true muonium, presents a unique opportunity to study could undergo a two-body dissociate or decay into two lepton universality in and beyond the standard model 2 2 electrons (with Mll ∼ 4Mμ). [5]. To facilitate these studies, efforts are ongoing to Another outcome of this search is its unique dependence improve theoretical predictions [6].
    [Show full text]
  • Arxiv:1311.3245V3 [Hep-Ph] 12 Nov 2014 Cay Products Include Not Only Monochromatic Photons, Light-Front Techniques
    True Muonium (µ+µ−) on the Light Front Henry Lamm∗ and Richard F. Lebedy Department of Physics, Arizona State University, Tempe, AZ 85287 (Dated: April, 2014) Applying Discretized Light Cone Quantization, we perform the first calculation of the spectrum of true muonium, the µ+µ− atom, as modified by the inclusion of an jee¯i Fock component. The shift in the mass eigenvalue is found to be largest for triplet states. If me is taken to be a substantial 3 fraction of mµ, the integrated probability of the electronic component of the 1 S1 state is found to be as large as O(10−2). Initial studies of the Lamb shift for the atom are performed. Directions for making the simulations fully realistic are discussed. PACS numbers: 36.10.Ee, 11.10.Ef, 11.10.St, 12.20.Ds I. INTRODUCTION of the atoms. Indeed, remarkable experiments can in principle be performed on these \atoms in flight", includ- The atom consisting of a µ+µ− bound state, called true ing measurements of the Lamb shift [7]. Bound states in muonium [in distinction from conventional muonium, the quantum field theory (QFT) are notoriously complicated atom (µ+e−)] has not yet been identified, despite much objects, due not only to the fact that the vacuum con- more exotic bound states having been successfully char- sists of an arbitrarily large number of virtual particles, acterized, such as πµ atoms [1] and even the dipositro- but also because the constituents can be relativistic, and nium (e+e−)(e+e−) molecule [2]. While (µ+µ−) atoms the required boosts to relate the components of the wave have doubtless been produced many times, for example function depend in a detailed way upon the interaction.
    [Show full text]
  • Hps Heavy Photon Search
    HPS: A proposal to Search for Massive Photons at Jefferson Laboratory HPS HEAVY PHOTON SEARCH A Proposal to Search for Massive Photons at Jefferson Laboratory December 1, 2010 1 HPS: A proposal to Search for Massive Photons at Jefferson Laboratory Authors A. Grillo, V. Fadeyev University of California, Santa Cruz, CA 95064 M. Ungaro University of Connecticut, Department of Physics, Storrs, CT 06269 W. Cooper Fermi National Accelerator Laboratory, Batavia, IL 60510-5011 A. Micherdzinska The George Washington University, Department of Physics,Washington, DC 20052 G. Ron Hebrew University of Jerusalem, Jerusalem, Israel M. Battaglieri, R. De Vita INFN, Sezione di Genova, 16146 Genova, Italy M. Holtrop (Co-Spokesperson), K. Slifer, S. K. Phillips, E. Ebrahim University of New Hampshire, Department of Physics, Durham, NH 03824 M. Khandaker, C. Salgado Norfolk State University, Department of Physics, Norfolk, VA 23504 S. Bueltmann, L. Weinstein Old Dominion University, Department of Physics, Norfolk, VA 23529 A. Fradi, B. Guegan, M. Guidal, S. Niccolai, S. Pisano, E. Rauly, P. Rosier and D. Sokhan Institut de Physique Nucleaire d'Orsay, 91405 Orsay, France P. Schuster, N. Toro Perimeter Institute, Ontario, Canada N2L 2Y5 P. Stoler, A. Kubarovsky Rensselaer Polytechnic Institute, Department of Physics, Troy, NY 12181 2 HPS: A proposal to Search for Massive Photons at Jefferson Laboratory R. Essig, C. Field, M. Graham, G. Haller, R. Herbst, J. Jaros (Co-Spokesperson), C. Kenney, T. Maruyama, K. Moffeit, T. Nelson, H. Neal, A. Odian, M. Oriunno, R. Partridge, D. Walz SLAC National Accelerator Laboratory, Menlo Park, CA 94025 S. Boyarinov, V. Burkert, A. Deur, H.
    [Show full text]