Table of Contents (Print)

Total Page:16

File Type:pdf, Size:1020Kb

Table of Contents (Print) PERIODICALS PHYSICAL REVIEW Dä 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 90, NUMBER 5 CONTENTS D1 SEPTEMBER 2014 RAPID COMMUNICATIONS Measurement of the electric charge of the top quark in tt¯ events (8 pages) ........................................................ 051101(R) V. M. Abazov et al. (D0 Collaboration) BRST-symmetry breaking and Bose-ghost propagator in lattice minimal Landau gauge (5 pages) ............................. 051501(R) Attilio Cucchieri, David Dudal, Tereza Mendes, and Nele Vandersickel ARTICLES pffiffiffi Search for supersymmetry in events with four or more leptons in s ¼ 8 TeV pp collisions with the ATLAS detector (33 pages) ................................................................................................................................. 052001 G. Aad et al. (ATLAS Collaboration) pffiffiffi Low-mass vector-meson production at forward rapidity in p þ p collisions at s ¼ 200 GeV (12 pages) .................. 052002 A. Adare et al. (PHENIX Collaboration) Measurement of Collins asymmetries in inclusive production of charged pion pairs in eþe− annihilation at BABAR (26 pages) 052003 J. P. Lees et al. (BABAR Collaboration) Measurement of the Higgs boson mass from the H → γγ and H → ZZÃ → 4l channels in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector (35 pages) ................................................................... 052004 G. Aad et al. (ATLAS Collaboration) pffiffiffi Search for high-mass dilepton resonances in pp collisions at s ¼ 8 TeV with the ATLAS detector (30 pages) .......... 052005 G. Aad et al. (ATLAS Collaboration) Search for low-mass dark matter with CsI(Tl) crystal detectors (6 pages) .......................................................... 052006 H. S. Lee, H. Bhang, J. H. Choi, S. Choi, I. S. Hahn, E. J. Jeon, H. W. Joo, W. G. Kang, B. H. Kim, G. B. Kim, H. J. Kim, J. H. Kim, K. W. Kim, S. C. Kim, S. K. Kim, Y. D. Kim, Y. H. Kim, J. H. Lee, J. K. Lee, S. J. Lee, D. S. Leonard, J. Li, J. Li, Y. J. Li, X. R. Li, S. S. Myung, S. L. Olsen, J. W. Park, I. S. Seong, J. H. So, and Q. Yue (KIMS Collaboration) 0 Flavor tagged time-dependent angular analysis of the Bs → J=ψϕ decay and extraction of ΔΓs and the weak phase ϕs in ATLAS (26 pages) ....................................................................................................................... 052007 G. Aad et al. (ATLAS Collaboration) Search for pair-producedpffiffiffi third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios in pp collisions at s ¼ 8 TeV with the ATLAS detector (36 pages) ............................................................. 052008 G. Aad et al. (ATLAS Collaboration) Observation of J=ψ → ppa¯ 0ð980Þ at BESIII (8 pages) ................................................................................ 052009 M. Ablikim et al. (BESII Collaboration) Measurement of the inclusive νμ charged current cross section on iron and hydrocarbon in the T2K on-axis neutrino beam (15 pages) ................................................................................................................................. 052010 K. Abe et al. (T2K Collaboration) Copyright 2014 American Physical Society (Continued) 1550-7998(20140901)90:5;1-Z Selected for a Viewpoint in Physics. Please visit http://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 90, NUMBER 5 D1 SEPTEMBER 2014 0 Measurement of CP violation in Bs → ϕϕ decays (17 pages) ........................................................................ 052011 R. Aaij et al. (LHCb Collaboration) Jet vetoes for Higgs boson production at future hadron colliders (10 pages) ...................................................... 053001 Radja Boughezal, Christfried Focke, Ye Li, and Xiaohui Liu The quest for neutrinoless double beta decay: Pseudo-Dirac, Majorana, and sterile neutrinos (10 pages) .................... 053002 A. Meroni and E. Peinado Limitations and opportunities of off-shell coupling measurements (10 pages) ..................................................... 053003 Christoph Englert and Michael Spannowsky Muon decay spin asymmetry (5 pages) ................................................................................................... 053004 Fabrizio Caola, Andrzej Czarnecki, Yi Liang, Kirill Melnikov, and Robert Szafron Effective theory and simple completions for neutrino interactions (13 pages) ...................................................... 053005 Mark B. Wise and Yue Zhang N3LO Higgs boson and Drell-Yan production at threshold: The one-loop two-emission contribution (12 pages) ........... 053006 Ye Li, Andreas von Manteuffel, Robert M. Schabinger, and Hua Xing Zhu Coy dark matter and the anomalous magnetic moment (5 pages) .................................................................... 053007 Andi Hektor and Luca Marzola Short baseline reactor ν¯ − e scattering experiments and nonstandard neutrino interactions at source and detector (11 pages) 053008 Amir N. Khan, Douglas W. McKay, and F. Tahir Determination of the mixing between active neutrinos and sterile neutrino through the quark-lepton complementarity and self- complementarity (6 pages) .............................................................................................................. 053009 Hong-Wei Ke, Tan Liu, and Xue-Qian Li Angular distribution in two-particle emission induced by neutrinos and electrons (8 pages) .................................... 053010 I. Ruiz Simo, C. Albertus, J. E. Amaro, M. B. Barbaro, J. A. Caballero, and T. W. Donnelly Cosmic neutrino background absorption line in the neutrino spectrum at IceCube (9 pages) ................................... 053011 Masahiro Ibe and Kunio Kaneta Self-consistent value of the electric radius of the proton from the Lamb shift in muonic hydrogen (12 pages) ............. 053012 Savely G. Karshenboim Model-independent determination of the magnetic radius of the proton from spectroscopy of ordinary and muonic hydrogen (9 pages) ................................................................................................................................... 053013 Savely G. Karshenboim Signal of right-handed charged gauge bosons at the LHC? (5 pages) ............................................................... 053014 Frank F. Deppisch, Tomas E. Gonzalo, Sudhanwa Patra, Narendra Sahu, and Utpal Sarkar Higher hybrid charmonia in an extended potential model (20 pages) ............................................................... 054001 M. Atif Sultan, Nosheen Akbar, Bilal Masud, and Faisal Akram Isovector axial vector and pseudoscalar transition form factors of Δ in QCD (7 pages) ......................................... 054002 A. Kucukarslan, U. Ozdem, and A. Ozpineci Exclusive vector meson production at high energies and gluon saturation (17 pages) ............................................ 054003 Néstor Armesto and Amir H. Rezaeian Next-to-leading order γγ þ 2-jet production at the LHC (23 pages) ................................................................. 054004 Z. Bern, L. J. Dixon, F. Febres Cordero, S. Höche, H. Ita, D. A. Kosower, N. A. Lo Presti, and D. Maître Difference cross sections of unpolarized SIDIS with transverse momentum dependence (8 pages) ............................ 054005 Ekaterina Christova More hidden heavy quarkonium molecules and their discovery decay modes (7 pages) ......................................... 054006 Gang Li, Xiao Hai Liu, and Zhu Zhou Heavy quarkonium wave functions at the origin and excited heavy quarkonium production via top quark decays at the LHC (12 pages) ................................................................................................................................. 054007 Qi-Li Liao and Guo-Ya Xie Telescoping jets: Probing hadronic event structure with multiple R’s (5 pages) ................................................... 054008 Yang-Ting Chien Interpreting Zc(3900) and Zc(4025)=Zc(4020) as charged tetraquark states (10 pages) ........................................ 054009 Chengrong Deng, Jialun Ping, Hongxia Huang, and Fan Wang (Continued) Selected for a Viewpoint in Physics. Please visit http://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 90, NUMBER 5 D1 SEPTEMBER 2014 Quark structure of the Xð3872Þ and χbð3PÞ resonances (9 pages) ................................................................... 054010 J. Ferretti, G. Galatà, and E. Santopinto Higgs-boson production through gluon fusion at NNLO QCD with parton showers (8 pages) ................................. 054011 Stefan Höche, Ye Li, and Stefan Prestel Effect of fluctuations on the QCD critical point in a finite volume (9 pages) ...................................................... 054012 Ralf-Arno Tripolt, Jens Braun, Bertram Klein, and Bernd-Jochen Schaefer Azimuthal quadrupole correlation from gluon interference in 200 GeV and 7 TeV p þ p collisions (10 pages) ............ 054013 R. L. Ray RK and future b → sll physics beyond the standard model opportunities (8 pages) ............................................
Recommended publications
  • Emerging Issues in Cosmology & Particle Physics
    Organizing Committee Patron Principal, Siksha Bhavana, Visva-Bharati Conveners Swarup Kumar Majee & Biswajit Pandey Program Advisory Committee AJIT KEMBHAVI, IUCAA, India AJIT SRIVASTAVA, IOPB , India International Conference on ALAKABHA DATTA, Univ. of Mississippi, USA AMITAVA RAYCHAUDHURI, Univ. Of Calcutta, India AMOL DIGHE, TIFR, India Emerging Issues ASANTHA R. COORAY, UC-Irvine, USA BISWARUP MUKHOPADHYAYA, HRI, India CHENG-WEI CHIANG, NTU, Taiwan in DIEGO PAVON, AUB, Spain EUNG JIN CHUN, KIAS, South Korea GORAN SENJANOVIC, INFN, Italy Cosmology & KAI-FENG CHEN, NTU, Taiwan NABA KUMAR MONDAL, SINP, India NOBUCHIKA OKADA, Univ. of Alabama, USA Particle Physics Organized by QAISAR SHAFI, Univ. of Delaware, USA RABINDRA MOHAPATRA, Univ. of Maryland, USA Department of Physics, RENNAN BARKANA, Tel Aviv University, Israel January 12 -14, 2020 SOMAK RAYCHAUDHURY, IUCAA, India VISVA-BHARATI UNIVERSITY SOMNATH BHARADWAJ, IIT, Kharagpur, India Visva-Bharati University THOMAS BUCHERT, CRAL, Univ. of Lyon, France Santiniketan Email: [email protected] UTPAL SARKAR, IIT, Kharagpur, India Mob.: (+91) 7908272177/ 7602198961 / 8972889271 VOLKER SPRINGEL, MPA, Garching, Germany India Conference webpage: https://indico.cern.ch/event/849205/ Local Organizing Committee Registration Fee Details All faculty members of the Department Indian participants Foreign participants of Physics, Visva-Bharati university Faculty Members INR 4000 USD 200 Ph.D. Students/ Postdocs INR 2000 USD 100 Conference Topics Undergraduate/M.Sc. Students INR 500 USD 75 The registration fee will cover registration kits, refreshments, lunch, dinner, conference dinner and Dark Matter & Dark Energy local transportation. Neutrino Physics Accelerator Physics The main objective of the conference is to provide a common platform to discuss the emerging issues Physics Beyond the Standard Model in cosmology and particle physics, to set out possible future collaborative research works and to nail 21 cm Cosmology down some existing common problems.
    [Show full text]
  • Report of the Supersymmetry Theory Subgroup
    Report of the Supersymmetry Theory Subgroup J. Amundson (Wisconsin), G. Anderson (FNAL), H. Baer (FSU), J. Bagger (Johns Hopkins), R.M. Barnett (LBNL), C.H. Chen (UC Davis), G. Cleaver (OSU), B. Dobrescu (BU), M. Drees (Wisconsin), J.F. Gunion (UC Davis), G.L. Kane (Michigan), B. Kayser (NSF), C. Kolda (IAS), J. Lykken (FNAL), S.P. Martin (Michigan), T. Moroi (LBNL), S. Mrenna (Argonne), M. Nojiri (KEK), D. Pierce (SLAC), X. Tata (Hawaii), S. Thomas (SLAC), J.D. Wells (SLAC), B. Wright (North Carolina), Y. Yamada (Wisconsin) ABSTRACT Spacetime supersymmetry appears to be a fundamental in- gredient of superstring theory. We provide a mini-guide to some of the possible manifesta- tions of weak-scale supersymmetry. For each of six scenarios These motivations say nothing about the scale at which nature we provide might be supersymmetric. Indeed, there are additional motiva- tions for weak-scale supersymmetry. a brief description of the theoretical underpinnings, Incorporation of supersymmetry into the SM leads to a so- the adjustable parameters, lution of the gauge hierarchy problem. Namely, quadratic divergences in loop corrections to the Higgs boson mass a qualitative description of the associated phenomenology at future colliders, will cancel between fermionic and bosonic loops. This mechanism works only if the superpartner particle masses comments on how to simulate each scenario with existing are roughly of order or less than the weak scale. event generators. There exists an experimental hint: the three gauge cou- plings can unify at the Grand Uni®cation scale if there ex- I. INTRODUCTION ist weak-scale supersymmetric particles, with a desert be- The Standard Model (SM) is a theory of spin- 1 matter tween the weak scale and the GUT scale.
    [Show full text]
  • The Standard Model of Particle Physics and Beyond
    Clases de Master FisyMat, Desarrollos Actuales The Standard Model of particle physics and Beyond Date and time: 02/03 to 07/04/2021 15:30–17:00 Video/Sala CAJAL Organizer and Lecturer: Abdelhak Djouadi ([email protected]) You can find the pdfs of the lectures at: https://www.ugr.es/˜adjouadi/ 6. Supersymmetric theories 6.1 Basics of Supersymmetry 6.2 The minimal Supesymmetric Standard Model 6.3 The constrained MSSM’s 6.4 The superparticle spectrum 6.5 The Higgs sector of the MSSM 6.6 Beyond the MSSM 1 6.1 Basics of Supersymmetry Here, we give only basic facts needed later in the phenomenological discussion. For details on theoretical issues, see basic textbooks like Drees, Godbole, Roy. SUperSYmmetry: is a symmetry that relates scalars/vector bosons and fermions. The SUSY generators transform fermions into bosons and vice–versa, namely: FermionQ > Boson > , Boson > Fermion > Q| | Q| | must be an anti–commuting (and thus rather complicated) object. Q † is also a distinct symmetry generator: Q † Fermion > Boson > , † Boson > Fermion > Q | | Q | | Highly restricted [e.g., no go theorem] theories and in 4-dimension with chiral fermions: 1 , † carry spin– with left- and right- helicities and they should obey Q Q 2 .... The SUSY algebra: which schematically is given by µ , † = P , , =0 , †, † =0, {Qµ Q } µ {Q Q} a {Q Qa } [P , ]=0, [P , †]=0, [T , ]=0, [T , †]=0 Q Q Q Q P µ: is the generator of space–time transformations. T a are the generators of internal (gauge) symmetries. SUSY: unique extension of the Poincar´egroup of space–time symmetry to include ⇒ a four–dimensional Quantum Field Theory..
    [Show full text]
  • Gaugino-Induced Quark and Lepton Masses in a Truly Minimal Left-Right
    UCRHEP-T354 ULB-TH/03-16 NSF-KITP-03-32 May 2003 Gaugino-induced quark and lepton masses in a truly minimal left-right model J.-M. Fr`ere1,3 and Ernest Ma2,3 1 Service de Physique Th´eorique, Universit´eLibre de Bruxelles, B-1050 Brussels, Belgium 2 Physics Department, University of California, Riverside, California 92521, USA 3 Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, USA arXiv:hep-ph/0305155v2 20 Aug 2003 Abstract It has recently been proposed that all fundamental fermion masses (whether Dirac or Majorana) come from effective dimension-five operators in the context of a truly minimal left-right model. We show how a particularly economical scheme emerges in a supersymmetric framework, where chiral symmetry breaking originates in the gaugino sector. In the Standard Model of particle interactions, the spontaneous breaking of the SU(2)L × U(1)Y gauge symmetry to U(1)em is achieved through the vacuum expectation value of the scalar doublet Φ = (φ+,φ0). At the same time, since left-handed quarks and leptons are doublets under SU(2)L U(1)Y whereas right-handed quarks and leptons are singlets, chiral × symmetry is also broken by φ0 , thus allowing quarks and leptons to acquire the usual Dirac h i masses. The only exception is the neutrino which gets a small Majorana mass through the unique dimension-five operator [1, 2] fij 0 + 0 + Λ = (νiφ eiφ )(νjφ ejφ )+ H.c. (1) L 2Λ − − Suppose we now extend the standard-model gauge symmetry to SU(3)C SU(2)L × × SU(2)R U(1)B L [3], then the spontaneous breaking of SU(2)R U(1)B L to U(1)Y is × − × − simply achieved by the scalar doublet + 0 ΦR =(φ ,φ ) (1, 1, 2, 1), (2) R R ∼ where the notation refers to the dimension of the non-Abelian representation or the value of the Abelian charge B L or Y in the convention − 1 Y Q = I3L + I3R + (B L)= I3L + , (3) 2 − 2 while the corresponding field + 0 ΦL =(φ ,φ ) (1, 2, 1, 1), (4) L L ∼ becomes the same as the usual scalar doublet of the Standard Model, and breaks SU(2)L × U(1)Y in turn to U(1)em.
    [Show full text]
  • Printed Here
    PHYSICAL REVIEW C VOLUME 55, NUMBER 2 FEBRUARY 1997 Selected Abstracts from Physical Review D Abstracts of papers published in Physical Review D which may be of interest to our readers are printed here. Superlight neutralino as a dark matter particle candidate. V. A. Constraints on big bang nucleosynthesis ~BBN! and on cosmo- Bednyakov, Max-Planck-Institut fu¨r Kernphysik, Postfach 103980, logical parameters from conflicting deuterium observations in dif- D-69029, Heidelberg, Germany and Laboratory of Nuclear Prob- ferent high redshift QSO systems are discussed. The high deuterium lems, Joint Institute for Nuclear Research, Moscow region, 141980 observations by Carswell et al., Songaila et al., and Rugers and Dubna, Russia; H. V. Klapdor-Kleingrothaus, Max-Planck-Institut Hogan are consistent with 4He and 7Li observations and standard fu¨r Kernphysik, Postfach 103980, D-69029, Heidelberg, Germany; BBN (Nn 53! and allows Nn<3.6 at 95% C.L., but are inconsistent S. G. Kovalenko, Max-Planck-Institut fu¨r Kernphysik, Postfach with local observations of D and 3He in the context of conventional 103980, D-69029, Heidelberg, Germany and Laboratory of Nuclear theories of stellar and galactic evolution. In contrast, the low deu- Problems, Joint Institute for Nuclear Research, Moscow region, terium observations by Tytler, Fan, and Burles and Burles and 141980 Dubna, Russia. ~Received 2 August 1996! Tytler are consistent with the constraints from local galactic obser- We address the question of how light the lightest supersymmetric vations, but require Nn51.960.3 at 68% C.L., excluding standard particle neutralino can be to be a reliable cold dark matter ~CDM! BBN at 99.9% C.L., unless the systematic uncertainties in the 4 particle candidate.
    [Show full text]
  • Mass Degeneracy of the Higgsinos
    CERN–TH/95–337 Mass Degeneracy of the Higgsinos Gian F. Giudice1 and Alex Pomarol Theory Division, CERN CH-1211 Geneva 23, Switzerland Abstract The search for charginos and neutralinos at LEP2 can become problematic if these particles are almost mass degenerate with the lightest neutralino. Unfortunately this is the case in the region where these particles are higgsino-like. We show that, in this region, radiative corrections to the higgsino mass splittings can be as large as the tree-level values, if the mixing between the two stop states is large. We also show that the degree of degeneracy of the higgsinos substantially increases if a large phase is present in the higgsino mass term µ. CERN–TH/95–337 December 1995 1On leave of absence from INFN Sezione di Padova, Padua, Italy. The search for charginos (˜χ+) at LEP2 is one of the most promising ways of discovering low-energy supersymmetry. If theχ ˜+ decays into the lightest neutralino (˜χ0) and a virtual W +, it can be discovered at LEP2 (with a L = 500 pb−1) whenever its production cross R section is larger than about 0.1–0.3pbandmχ˜0 is within the range mχ˜0 ∼> 20 GeV and mχ˜+ − mχ˜0 ∼> 5–10 GeV [1]. Therefore, the chargino can be discovered almost up to the LEP2 kinematical limit, unless one of the following three conditions occurs: i) The sneutrino (˜ν) is light and the chargino is mainly gaugino-like. In this case theν ˜ t-channel exchange interferes destructively with the gauge-boson exchange and can reduce the chargino production cross section below the minimum values required for observability, 0.1–0.3 pb.
    [Show full text]
  • Arxiv: Instanton Operators and the Higgs Branch at Infinite Coupling
    Published for SISSA by Springer Received: October 26, 2016 Revised: March 14, 2017 Accepted: March 25, 2017 Published: April 10, 2017 Instanton operators and the Higgs branch at infinite JHEP04(2017)042 coupling Stefano Cremonesi,a Giulia Ferlito,b Amihay Hananyb and Noppadol Mekareeyac aDepartment of Mathematics, King's College London, The Strand, London WC2R 2LS, U.K. bTheoretical Physics Group, Imperial College London, Prince Consort Road, London, SW7 2AZ, U.K. cTheory Division, Physics Department, CERN, CH-1211, Geneva 23, Switzerland E-mail: [email protected], [email protected], [email protected], [email protected] Abstract: The richness of 5d N = 1 theories with a UV fixed point at infinite coupling is due to the existence of local disorder operators known as instanton operators. By consid- ering the Higgs branch of SU(2) gauge theories with Nf ≤ 7 flavours at finite and infinite coupling, we write down the explicit chiral ring relations between instanton operators, the glueball superfield and mesons. Exciting phenomena appear at infinite coupling: the glue- ball superfield is no longer nilpotent and the classical chiral ring relations are quantum corrected by instanton operators bilinears. We also find expressions for the dressing of instanton operators of arbitrary charge. The same analysis is performed for USp(2k) with an antisymmetric hypermultiplet and pure SU(N) gauge theories. Keywords: Nonperturbative Effects, Solitons Monopoles and Instantons, Supersymmet- ric Gauge Theory ArXiv ePrint: 1505.06302
    [Show full text]
  • Dark Matter and Collider Phenomenology of Non-Universal Gaugino Masses
    Dark Matter and Collider Phenomenology of Non-Universal Gaugino Masses A dissertation presented by Michael Holmes to The Department of Physics In partial fulfillment of the requirements for the degree of Doctor of Philosophy in the field of Physics Northeastern University Boston, Massachusetts April, 2010 1 c Michael Holmes, 2010 ALL RIGHTS RESERVED 2 Dark Matter and Collider Phenomenology of Non-Universal Gaugino Masses by Michael Holmes ABSTRACT OF DISSERTATION Submitted in partial fulfillment of the requirement for the degree of Doctor of Philosophy in Physics in the Graduate School of Arts and Sciences of Northeastern University, April, 2010 3 Abstract Signals of minimal supersymmetric models with non-universalities in the gaugino sector of the theory are analyzed at the CERN Large Hadron Collider (LHC) and in experiments searching for dark matter. Signals of dark matter including direct and indirect detection are investigated at depth in various supersymmetric frameworks. The parameter space of deflected mirage mediation, in which the soft terms receive contributions from the three main supersymmetry breaking mediation mechanisms, is investigated with emphasis on the neutralino sector and dark matter signals. The potential for non-universal gaugino masses to explain the recent CDMS II data is studied and possible implications for indirect dark matter detection experiments and LHC signatures are considered. Collider implications of non- universalities in the gaugino sector are examined with attention paid to specific signatures which are targeted to track the non-universalities. Further, the complementarity of dark matter and collider measurements is discussed with emphasis on breaking model degeneracies which may arise in LHC data.
    [Show full text]
  • Introduction to Supersymmetry
    Introduction to Supersymmetry Pre-SUSY Summer School Corpus Christi, Texas May 15-18, 2019 Stephen P. Martin Northern Illinois University [email protected] 1 Topics: Why: Motivation for supersymmetry (SUSY) • What: SUSY Lagrangians, SUSY breaking and the Minimal • Supersymmetric Standard Model, superpartner decays Who: Sorry, not covered. • For some more details and a slightly better attempt at proper referencing: A supersymmetry primer, hep-ph/9709356, version 7, January 2016 • TASI 2011 lectures notes: two-component fermion notation and • supersymmetry, arXiv:1205.4076. If you find corrections, please do let me know! 2 Lecture 1: Motivation and Introduction to Supersymmetry Motivation: The Hierarchy Problem • Supermultiplets • Particle content of the Minimal Supersymmetric Standard Model • (MSSM) Need for “soft” breaking of supersymmetry • The Wess-Zumino Model • 3 People have cited many reasons why extensions of the Standard Model might involve supersymmetry (SUSY). Some of them are: A possible cold dark matter particle • A light Higgs boson, M = 125 GeV • h Unification of gauge couplings • Mathematical elegance, beauty • ⋆ “What does that even mean? No such thing!” – Some modern pundits ⋆ “We beg to differ.” – Einstein, Dirac, . However, for me, the single compelling reason is: The Hierarchy Problem • 4 An analogy: Coulomb self-energy correction to the electron’s mass A point-like electron would have an infinite classical electrostatic energy. Instead, suppose the electron is a solid sphere of uniform charge density and radius R. An undergraduate problem gives: 3e2 ∆ECoulomb = 20πǫ0R 2 Interpreting this as a correction ∆me = ∆ECoulomb/c to the electron mass: 15 0.86 10− meters m = m + (1 MeV/c2) × .
    [Show full text]
  • Loop-Induced CP Violation in the Gaugino and Higgsino Sectors of Supersymmetric Theories
    CERN-TH/99-379 THES-TP/99-xx hep-ph/9912253 December 1999 Loop-Induced CP Violation in the Gaugino and Higgsino Sectors of Supersymmetric Theories Apostolos Pilaftsis Theory Division, CERN, CH-1211 Geneva 23, Switzerland and Department of Theoretical Physics, University of Thessaloniki, GR 54006 Thessaloniki, Greece ABSTRACT We show that the gaugino and higgsino sectors of supersymmetric theories can nat- urally acquire observable CP violation through radiative effects which originate from large CP-violating trilinear couplings of the Higgs bosons to the third-generation scalar quarks. These CP-violating loop effects are not attainable by evolving the supersymmetric renormalization-group equations from a higher unification scale down to the electroweak one. We briefly discuss the phenomenological consequences of such a scenario, and as an example, calculate the two-loop contribution to the neutron electric dipole moment gener- ated by the one-loop chromo-electric dipole moment of the gluino. PACS numbers: 11.30.Er, 14.80.Er 1 Supersymmetric (SUSY) theories, including the minimal supersymmetric Standard Model (MSSM), predict several new unsuppressed CP-violating phases which generally lead to too large contributions to the electric dipole moments (EDM’s) of the neutron and electron [1, 2, 3, 4, 5, 6]. Several suggestions have been made in the literature to overcome such a CP crisis in SUSY theories. Apart from the cancellation mechanism proposed in [5], an interesting solution to the above CP-crisis problem is to assume that the first two generations are either very heavy above the TeV scale [4, 7] or they do not involve CP- violating phases in their trilinear couplings Af to the Higgs bosons [6].
    [Show full text]
  • Supersymmetry Phenomenology in IIB String Theory
    Supersymmetry Phenomenology in IIB String Theory by Kevin Mitchell Givens B.S., Vanderbilt University, 2006 A thesis submitted to the Faculty of the Graduate School of the University of Colorado in partial fulfillment of the requirements for the degree of Doctor of Philosophy Department of Physics 2012 This thesis entitled: Supersymmetry Phenomenology in IIB String Theory written by Kevin Mitchell Givens has been approved for the Department of Physics Senarath P. de Alwis Prof. William T. Ford Prof. Oliver DeWolfe Prof. K. T. Manhanthappa Prof. J. Michael Shull Date The final copy of this thesis has been examined by the signatories, and we find that both the content and the form meet acceptable presentation standards of scholarly work in the above mentioned discipline. iii Givens, Kevin Mitchell (Ph.D., Physics) Supersymmetry Phenomenology in IIB String Theory Thesis directed by Prof. Senarath P. de Alwis IIB string theory represents one of the most promising realizations of string theory studied to date because it successfully handles a variety of phenomenological issues. These issues include mechanisms for stabilizing all relevant moduli fields, generating a small cosmological constant and breaking supersymmetry on a low scale. In this dissertation we examine these issues and describe the phenomenological consequences of a class of realistic IIB models that have the potential to effect both LHC physics and cosmology. In addition, we explore ways to embed interesting physical models, such as the QCD axion, within this class of IIB models. Dedication First, I would like to express my sincerest appreciation to my advisor, Shanta de Alwis, for his steadfast support and encouragement throughout the entire course of my dissertation.
    [Show full text]
  • Qaisar Shafi Studied for His B
    Qaisar Shafi received his BSc and his PhD in Theoretical Physics from Imperial College, London. England. His PhD advisor was the late Abdus Salam who received the Nobel Prize for Theoretical Physics in 1979. After completing his PhD, Professor Shafi held prestigious postdoctoral and research fellowships including an Alexander von Humboldt fellowship at the Universities of Munich and Aachen, Germany, and a senior fellowship at CERN in Geneva, Switzerland. He also completed his Habilitation with venia legendi at the University of Freiburg, Germany. He joined the Bartol Research Institute at the University of Delaware in 1983. Throughout his career at the University of Delaware, Professor Shafi has maintained close ties to the ICTP (International Center for Theoretical Physics) in Trieste, Italy where he directed more than a dozen summer schools in High Energy Physics and Cosmology. He also (co-)directed a NATO school and several summer schools in High Energy Physics organized under BCSVPIN (an acronym denoting the countries Bangladesh, China, Sri Lanka, Vietnam, Pakistan, and India), an international science network, founded in collaboration with Abdus Salam and Jogesh Pati, and continued by Professor Shafi. Qaisar Shafi is an internationally recognized expert in Elementary Particle (High Energy) Physics and Cosmology; his current research areas include Higgs boson, supersymmetry, new physics at the LHC, dark matter particle, inflationary cosmology and primordial gravity waves, origin of matter in the universe and nature of dark energy. Professor Shafi has supervised a large number of postdoctoral fellows and PhD students, and created a global network of collaborators. Many of his former students and postdocs have become highly respected scientists in their home countries.
    [Show full text]