DOCSLIB.ORG

Mostly Supersymmetry

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Mostly Supersymmetry Physics Beyond Standard Model (mostly supersymmetry) Asia-Europe-Pacific High Energy Physics School Chinese Academy of Sciences, Beijing Lecture 3 , October 24, 2016 Sudhir Vempati, Centre for High Energy Physics, Indian Institute of Science Bangalore [email protected] 1 Outline 1) Three paths to supersymmetry 2) LHC Results 3) Flavour Constraints 4) Dark Matter Constraints 5) Escaping LHC and other search strategies 6) Famous SUSY breaking models and their status 7) A small introduction to Extra Dimensions 2 Other advantages of SUSY • Its calculable and thus in principle, predictable. It has nice Quantum field theory properties (non-renormalisable theorems etc) • Dark Matter candidate if R-parity is conserved. • Gauge coupling unification ( GUTs with neutrino masses and mixing ) • Lightest Higgs boson can be SM -like in regions of parameter space. Then, where can we find it ? 3 Model of SUSY lecture 2 Flavour and LHC DM CP violation 4 Some SUSY CODES Spectrum Generators Dark Matter SPHENO ISADM SOFTSUSY SuperISoRelic ISASUSY MicroOmegas SUSPECT Dark SUSY SUSEFLAV FLEXISUSY Flavour Physics Collider Physics ISAJET SuperIso Prospino SUSYFLAVOR Higlu SuperLFV SUSHI ISABSMU MADGRAPH SUSEFLAV CHECKMATE 5 http://www.hepforge.org SuSeFLAV SUpersymmetric SEesaw and Flavour Violation Our Webpage Published in Computer Physics Communications 184 (2013) 899 6 Searches at LHC (1) squarks and gluinos (2) Direct Production of stops and Bottoms (3) Direct Electroweak production Searches at LHC Coloured particles are produced more copiously at the LHC More Examples So squarks and gluinos have the strongest constraints • These come from S. Martin’s SUSY primer - a good resource http://arxiv.org/pdf/hep-ph/9709356v4 8 Some cascade decays of gluinos jet jet lepton jet qqjet qqff missing transverse E g˜ q˜R N˜1 g˜ q˜L N˜2 f˜ N˜1 (a) (b) ′ ′ ′ ′ q q f f q q N˜1 f g˜ q˜L C˜1 f˜ N˜1 g˜ q˜L C˜1 W f (c) (d) Figure 9.2: Some1 HEP: of the where many possibledo we stand? examples of gluino cascade decays ending with a neutralino LSP in the final state. The squarks appearing in these diagramsmaybeeitheron-shelloroff-shell, depending on the mass spectrum of the theory. t 9.3 Squark decays 0 P2 ˜χ 1 If the decay q qg is kinematically allowed, it will usually dominate, becausethequark-squark-gluino → vertexsample in Figure stop 6.3a has QCD strength. Otherwise, the squarks˜t can decay into a quark plus neutralino − 0 or chargino: !q q!Ni or q′Ci.ThedirectdecaytotheLSPq qN1 is always˜χ kinematically˜χ favored, decays→ → 1 and for right-handed squarks it can dominateP1 because N1 is˜t∗ mostly bino. However, the left-handed ! ! ! squarks may strongly! prefer to decay into heavier charginos or! neutralinos instead,W for− example q qN2 ! → or q′C1,becausetherelevantsquark-quark-winocouplingsaremuchbiggerthanthesquark-quark-bino couplings. Squark decays to higgsino-like charginos and neutralinos are less important,¯b except! in the! cases! of stops and sbottoms, which have sizable Yukawa couplings. The gluino, chargino or neutralino resulting from theFig. squark 1.7: Sketch decay will of a in possible turn decay, T2tb and event. so on, In thisuntil case a final both state possible containing decaysN areis shown:reached. the upper 0 0 1 (lower) branch outlines the ˜t t χ (˜t⇤ b¯ χ− b¯ W −χ )decay. This results in numerous and complicated decay chain! possib9 ilities! called! cascade decays [227]. ! It is possible that the decays t1 tg and t1 tN1 are both kinematically forbidden. If so, then the → → e e e lighter top squarkdesigned. may decay The only search into presented charginos, in by thist1 thesisbC1 stems,orbyathree-bodydecay from [49], but aims tot1 be morebW N sensitive1. in ! → → If even this decaythe is kinematically T2tb model,! resulting closed,! then in! a it less has dependent only the flavor-suppressed sensitivity on decay(˜t t toχ0 a). charm quark, ! ! t1 cN1,andthefour-bodydecayt1 bff ′N1.Thesedecayscanbeveryslow[228],sothatthe! B !˜ 0! → Last but not least, the→ polarization of the top quarks in the t t χ decay needs special lightest stop can be quasi-stable on the time scale relevant for collider physics, and! can hadronize into attention. Top quark polarization can significantly a↵ect the detectione efficiency, as discussed bound! states.! ! ! in Ref. [49, 52]. In real SUSY models, this polarization depends in a complicatede way on the details of the ˜t and χ0 mixing matrices. In order to check the dependence of the results on 9.4 Gluino decaysthe final state quark polarization, the signal sample was generated under the assumption that the decay ˜t t χ0 produces unpolarized top quarks and limits for the left-polarized and The decay of the gluino can! only proceede through a squark, either on-shell or virtual. If two-body right-polarized top quarks within the T2tt model are obtained by analytically reweighting the decays g qq are open, they will dominate, again because the relevant gluino-quark-squark coupling → unpolarized sample. in Figure 6.3a has QCD strength. Sincee the top and bottom squarks can easily be much lighter than all of the other! squarks,! it is quite possible that g tt and/or g bb are the only available two-body → 1 → 1 decay mode(s) for1.4 the Other gluino, in Beyond which case the they Standard will dominat Modeleoverallothers.Ifinsteadallofthe theories squarks are heavier than the gluino, the gluino! will! decay only! through! off-shell squarks, so g qqN → i and qq′Ci.Thesquarks,neutralinosandcharginosinthesefinalstateSupersymmetry is not the only theory addressing the shortcomingsswillthendecayasdiscussed of the SM. The little Higgs above, so theretheories can be many with T-parity competing conservation gluino decay [53– chains.55] areSo equallyme of able the to possibilities solve the hierarchy are! shown problem in! and fig. 9.2.! The cascadeprovide decays stable, can neutral, have final-state weakly interacting branching particles fractions acting that as are good individually cold dark smallmatter and candidates. quite sensitive toModels the model predicting parameters. extra dimensions are also theoretically appealing and attracted a lot of The simplestattention. gluino decays, In the including following, the the ones general shown features in fig. 9 of.2, these can have models 0, 1, are or discussed. 2 charged leptons (in addition to two or more hadronic jets) in the final state. Animportantfeatureisthatwhenthere Little Higgs Little Higgs models comprise a wide110 class of SM extensions in which the quadratic divergences of the physical Higgs boson mass cancel out at the one-loop level, but reappear at the multi-loop level. In this way, the second term in the right-hand side of Eq. 1.3 is reduced by additional 2 powers of 8⇡ , and the scale ⇤UV is correspondingly pushed up. A new symmetry is introduced and the breaking of this symmetry around the TeV scale results into new gauge bosons, scalars, and fermions responsible for canceling the one loop quadratic divergences. Some of the most appealing Little Higgs models extend the SM with additional families of vector-like quarks [55,56]. Vector-like quarks are hypothetical spin-1/2 fermions that transform as triplets under the color gauge group and whose left- and right-handed components have the same color and electroweak quantum numbers. They are the simplest example of colored fermions still allowed by experimental data. Additional families of chiral quarks are excluded by 18 SUSY production cross-sections arxiv : 1407.5066 10 4 3 10 σtot[pb]: pp → SUSY √s = 13 TeV fall rapidly 10 2 NLO+NLL with mass 10 1 -1 10 -2 10 -3 Review : 10 q˜ g˜ q˜ q˜ 1105.1110 -4 10 t˜ t˜ * g˜ g˜ q˜ q˜ * -5 10 500 1000 1500 2000 2500 3000 3500 m [GeV] Figure 1: NLO+NLL production cross sections for the case of equal degenerate squark and gluino masses as a function of mass at √s =13TeV. 10 4 3 10 σtot[pb]: pp → SUSY √s = 14 TeV 10 2 NLO+NLL 10 1 -1 10 -2 10 -3 10 q˜ g˜ q˜ q˜ -4 10 t˜ t˜ * g˜ g˜ q˜ q˜ * -5 10 500 1000 1500 2000 2500 3000 3500 m [GeV] Figure 2: NLO+NLL production cross sections for the case of equal degenerate squark and gluino masses as a function of mass at √s =14TeV. 6 Introduction Christian Sanders, For CMS, Talk at SUSY 2015 • SM is incomplete (DM, hierarchy problem, gravity, neutral atoms …) • SUSY is able to provide simultaneously solutions to some of these shortcomings backgrounds are • SUSY is broken: Masses are typically large heavy and cross sections are low • Most attractive when masses in TeV range → searches @LHC • Challenge: suppress and understand SM backgrounds with orders of magnitude larger cross sections C. Sander SUSY Searches at CMS SUSY 2015 - Lake Tahoe 7 Some examples to get the hang of it production of charginos neutralinos,sleptons etc. 12 Early Results from LHC ATLAS Searches* - 95% CL Lower Limits (Lepton-Photon 2011) -1 ~ ~ ATLAS MSUGRA/CMSSM : 0-lep + ET ,miss L=1.04 fb (2011) [Preliminary] 980 GeV q = g mass Preliminary 0 ∼ -1 ~ ~ Simplified model (light χ ) : 0-lep + ET ,miss L=1.04 fb (2011) [Preliminary] 1.075 TeV q = g mass 1 ∫Ldt = (0.034 - 1.04) fb-1 ∼0 s = 7 TeV Simplified model (light χ ) : 0-lep + E -1 ~ 1 T ,miss L=1.04 fb (2011) [Preliminary] 850 GeV q mass ∼0 Simplified model (light χ ) : 0-lep + E -1 ~ 1 T ,miss L=1.04 fb (2011) [Preliminary] 800 GeV g mass ∼0 ~ Simpl. mod. (light χ ) : 0-lep + b-jets + E -1 ~ 1 T ,miss L=0.83 fb (2011) [ATLAS-CONF-2011-098] 720 GeV g mass (for m(b) < 600 GeV) ~ 0 ∼ -1 ~ ∼0 Simpl.
Load more

Recommended publications
  • Μ → Eγ and Matching at Mw
    Eur. Phys. J. C (2016) 76:370 DOI 10.1140/epjc/s10052-016-4207-5 Regular Article - Theoretical Physics μ → eγ and matching at mW Sacha Davidson1,2,3,a 1 IPNL, CNRS/IN2P3, 4 rue E. Fermi, 69622 Villeurbanne Cedex, France 2 Université Lyon 1, Villeurbanne, France 3 Université de Lyon, 69622 Lyon, France Received: 18 March 2016 / Accepted: 14 June 2016 / Published online: 4 July 2016 © The Author(s) 2016. This article is published with open access at Springerlink.com Abstract Several experiments search for μ ↔ e flavour attempt to reconstruct the fundamental Lagrangian of New change, for instance in μ → e conversion, μ → eγ and Physics from the operator coefficients. This is probably not μ → eee¯ . This paper studies how to translate these experi- feasible, but could give interesting perspectives. A first step mental constraints from low energy to a New Physics scale in this “bottom-up” approach, explored in this paper, is to M mW . A basis of QCD × QED-invariant operators (as use Effective Field Theory (EFT) [31] to translate the exper- appropriate below mW ) is reviewed, then run to mW with imental bounds to the coefficients of effective operators at one-loop Renormalisation Group Equations (RGEs) of QCD the New Physics scale M > mW . and QED. At mW , these operators are matched onto SU(2)- The goal would be to start from experimental constraints invariant dimension-six operators, which can continue to run on μ–e flavour change, and obtain at M the best bound up with electroweak RGEs. As an example, the μ → eγ on each coefficient from each observable.
    [Show full text]
  • On the Exotic Higgs Decays in Effective Field Theory
    Eur. Phys. J. C (2016) 76:514 DOI 10.1140/epjc/s10052-016-4362-8 Regular Article - Theoretical Physics On the exotic Higgs decays in effective field theory Hermès Bélusca-Maïtoa, Adam Falkowskib Laboratoire de Physique Théorique, Université Paris-Sud, Bat. 210, 91405 Orsay, France Received: 22 April 2016 / Accepted: 9 September 2016 / Published online: 22 September 2016 © The Author(s) 2016. This article is published with open access at Springerlink.com Abstract We discuss exotic Higgs decays in an effec- in powers of 1/. The leading effects are expected from tive field theory where the Standard Model is extended by operators of dimension 6, as their coefficients are suppressed dimension-6 operators. We review and update the status of by 1/2. The first classification of dimension-6 operators two-body lepton- and quark-flavor-violating decays involv- was performed in Ref. [1]. For one generation of fermions, ing the Higgs boson. We also comment on the possibility of a complete non-redundant set (henceforth referred to as a observing three-body flavor-violating Higgs decays in this basis) was identified and explicitly written down in Ref. [2]. context. Reference [3] extended this to three generations of fermions, in which case a basis is characterized by 2499 independent parameters. Contents In this paper we are interested in the subset of these operators that lead to exotic decays of the 125 GeV Higgs 1 Introduction ..................... 1 boson. By “exotic” we mean decays that are forbidden in 2 Exotic Higgs couplings from dimension-6 Lagrangian 2 the SM or predicted to occur with an extremely suppressed 3 Two-body Higgs decays ..............
    [Show full text]
  • Pos(ICHEP2016)037
    Vision and Outlook: The Future of Particle Physics Ian Shipsey University of Oxford PoS(ICHEP2016)037 Oxford, United Kingdom E-mail: [email protected] As a community, our goal is to understand the fundamental nature of energy, matter, space, and time, and to apply that knowledge to understand the birth, evolution and fate of the universe. Our scope is broad and we use many tools: accelerator, non-accelerator & cosmological observations, all have a critical role to play. The progress we have made towards our goal, the tools we need to progress further, the opportunities we have for achieving “transformational or paradigm-altering” scientific advances: great discoveries, and the importance of being a united global field to make progress toward our goal are the topics of this talk. Dedication Gino Bolla (September 25, 1968 - September 04, 2016) A remarkable and unique physicist, friend and colleague to many. 38th International Conference on High Energy Physics 3-10 August 2016 Chicago, USA ã 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/ Vision and Outlook: Future of Particle Physics Ian Shipsey Introduction ICHEP was like a tidal wave. A record 1600 abstracts were submitted, of which 600 were selected for parallel presentations and 500 for posters by 65 conveners. During three days of plenary sessions, 36 speakers from around the world overviewed results presented at the parallel and poster sessions. The power that drives the wave is the work of >20,000 colleagues around the globe, students, post docs, engineers, technicians, scientists and professors, toiling day and night, making the measurements and the calculations; sharing a common vision that this remarkable cosmos is knowable.
    [Show full text]
  • Agenda Item 5: CHIPP Prize: Revised Procedure
    Wrap-up: Session 1 “Setting the scene : European Strategy for Particle Physics” • Problems, Action items, Way forward … • LHC full exploitation & HL-upgrade, accelerator R&D, ILC, LBN • Theory, Experiments with unique reach • Detector R&D, collaboration wit ApPEC FLARE, Accelerator Science, Focus, PSI, Astro … Session 1 Highlights: SERI statements 1. SERI will continue to support CERN in financial, organisational, political and diplomatic matters, help facilitating international contacts (e.g. with the United Nations) and is willing to consider further special contributions. 2. SERI acknowledges the increased need for funding for the LHC high-luminosity upgrade-period 2014-2024 and will examine this request seriously for the BFI Bill 2017-2020. SERI is not the only funding source and a joint effort is needed. 3. If corresponding requests arrive, SERI is willing to include “Distributed and High Power Computing Activities” in the update process of our national roadmap for research infrastructures. 4. We note that SERI together with SNSF should consider increased funding in the FLARE program to permit sustainable Swiss participation in international astroparticle physics projects. 5. SERI has a vital interest that outreach and education should receive adequate funding and be recognized as a central component of the scientific activity. The seed funding of the “Verflixtes Higgs” by SERI is a first excellent example. 6. SERI presently investigates solutions to strengthen and coordinate technology transfer. This activity will very likely be
    [Show full text]
  • Spin-Dependent $\Mu\To E $ Conversion
    LA-UR-17-21718 OUHEP-17-1 Spin-dependent µ → e conversion Vincenzo Cirigliano,1 Sacha Davidson,2 and Yoshitaka Kuno3 1Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA 2 IPNL, CNRS/IN2P3, Universit´eLyon 1,Univ. Lyon, 69622 Villeurbanne, France 3Department of Physics, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan (Dated: August 31, 2018) The experimental sensitivity to µ e conversion on nuclei is expected to improve by four orders of magnitude in coming years. We consider→ the impact of µ e flavour-changing tensor and axial- vector four-fermion operators which couple to the spin of nucleons.→ Such operators, which have not previously been considered, contribute to µ e conversion in three ways: in nuclei with spin they mediate a spin-dependent transition; in all→ nuclei they contribute to the coherent (A2-enhanced) spin-independent conversion via finite recoil effects and via loop mixing with dipole, scalar, and vector operators. We estimate the spin-dependent rate in Aluminium (the target of the upcoming COMET and Mu2e experiments), show that the loop effects give the greatest sensitivity to tensor and axial-vector operators involving first-generation quarks, and discuss the complementarity of the spin-dependent and independent contributions to µ e conversion. → Introduction – New particles and interactions be- eral orders of magnitude, in particular, the COMET [13] yond the Standard Model of particle physics are required and Mu2e [14] experiments aim to reach a sensitivity to explain neutrino masses and mixing angles. The search to µ e conversion on nuclei of 10−16, and the for traces of this New Physics (NP) is pursued on many PRISM/PRIME→ proposal[15] could reach∼ the unprece- fronts.
    [Show full text]
  • Arxiv:1610.06587V1 [Hep-Ph] 20 Oct 2016
    A Call for New Physics : The Muon Anomalous Magnetic Moment and Lepton Flavor Violation Manfred Lindner1, Moritz Platscher2, Farinaldo S. Queiroz3 Max-Planck-Institut f¨urKernphysik Saupfercheckweg 1, 69117 Heidelberg, Germany Abstract We review how the muon anomalous magnetic moment (g − 2) and the quest for lepton flavor violation are intimately correlated. Indeed the decay µ ! eγ is induced by the same amplitude for different choices of in- and outgoing leptons. In this work, we try to address some intriguing questions such as:Which hier- archy in the charged lepton sector one should have in order to reconcile possible signals coming simultaneously from g − 2 and LFV? What can we learn if the g − 2 anomaly is confirmed by the upcoming flagship experiments at FERMI- LAB and J-PARC, and no signal is seen in the decay µ ! eγ in the foreseeable future? On the other hand, if the µ ! eγ decay is seen in the upcoming years, do we need to necessarily observe a signal also in g − 2? In this attempt, we generally study the correlation between the two phenomena in a detailed anal- ysis of simplified models. We derive master integrals and fully analytical and exact expressions for both phenomena. We investigate under which conditions the observations can be made compatible and discuss their implications. Lastly, we discuss in this context several extensions of the SM, such as the Minimal arXiv:1610.06587v1 [hep-ph] 20 Oct 2016 Supersymmetric Standard Model, Left-Right symmetric model, B − L model, scotogenic model, two Higgs doublet model, Zee-Babu model, 3-3-1 model, and Lµ − Lτ models.
    [Show full text]
  • CHIPP Roadmap for Research and Infrastructure 2025–2028 and Beyond by the Swiss Particle Physics Community IMPRINT
    Vol. 16, No. 6, 2021 swiss-academies.ch CHIPP Roadmap for Research and Infrastructure 2025–2028 and beyond by the Swiss Particle Physics Community IMPRINT PUBLISHER Swiss Academy of Sciences (SCNAT) · Platform Mathematics, Astronomy and Physics (MAP) House of Academies · Laupenstrasse 7 · P.O. Box · 3001 Bern · Switzerland +41 31 306 93 25 · [email protected] · map.scnat.ch @scnatCH CONTACT Swiss Institute of Particle Physics (CHIPP) ETH Zürich · IPA · HPK E 26 · Otto-Stern-Weg 5 · 8093 Zürich Prof. Dr. Rainer Wallny · [email protected] · +41 44 633 40 09 · chipp.ch @CHIPP_news RECOMMENDED FORM OF CITATION Wallny R, Dissertori G, Durrer R, Isidori G, Müller K, Rivkin L, Seidel M, Sfyrla A, Weber M, Benelli A (2021) CHIPP Roadmap for Research and Infrastructure 2025–2028 and beyond by the Swiss Particle Physics Community Swiss Academies Reports 16 (6) SCNAT ROADMAPS COORDINATION Hans-Rudolf Ott (ETH Zürich) · Marc Türler (SCNAT) CHIPP ROADMAP EDITORIAL BOARD A. Benelli (secretary) · G. Dissertorib · R. Durrerd · G. Isidoric · K. Müllerc · L. Rivkina, g · M. Seidela, g · A. Sfyrlad R. Wallnyb (Chair) · M. Weberf CONTRIBUTING AUTHORS A. Antogninia, b · L. Baudisc · HP. Beckf · G. Bisona · A. Blondeld · C. Bottac · S. Braccinif · A. Bravard · L. Caminadaa, c F. Canellic · G. Colangelof · P. Crivellib · A. De Cosab · G. Dissertorib, M. Donegab · R. Durrerd · M. Gaberdielb · T. Gehrmannc T. Gollingd, C. Grabb · M. Grazzinic · M. Hildebrandta · M. Hoferichterf · B. Kilminstera · K. Kircha, b · A. Knechta · I. Kreslof B. Kruschee · G. Iacobuccid · G. Isidoric · M. Lainee · B. Laussa, M. Maggiored · F. Meiera · T. Montarulid · K. Müllerc A. Neronovd, 1 · A.
    [Show full text]
  • A Statistical Framework for Model Comparison in Particle Physics
    A Statistical Framework for Model Comparison in Particle Physics Thesis submitted in accordance with the requirements of the University of Liverpool for the degree of Doctor in Philosophy by Gareth Luke Williams September 2019 1 Acknowledgements I would like to thank my parents for their support throughout without which this thesis would not be possible. I also want to thank my supervisors Dr Thomas Teubner and Martin Gorbahn for all their support, academic and pastoral throughout this PhD process. 2 Contents 1 Introduction 1 2 Statistics Overview 4 2.1 Probability Axioms . .4 2.2 Why Bayesian? . .5 2.3 Bayes Factor . .6 2.4 Bayes Factor Interpretation . .7 2.5 The Covariance Matrix . .8 3 Observables Overview 11 3.1 aµ Overview in the Standard Model . 11 3.2 Lepton Flavour Violation . 13 4 Computational Framework 16 4.1 Inputs for the Models . 16 4.2 Likelihood Calculation . 19 4.3 Saving Output Values . 21 4.4 Separate Generating and Analysis Code . 22 4.5 Plotting . 26 5 Test Model 29 5.1 b ! uud ............................... 30 5.2 B ! ππ ............................... 31 5.3 B ! D(∗)0h0 ............................ 32 5.4 B¯0 ! D∗+π− ............................ 32 5.5 B ! ρρ ............................... 33 5.6 Scaling of the Wilson Coefficients . 33 5.7 Model Results . 34 3 6 Minimally Supersymmetric Standard Model 43 6.1 aµ in the MSSM . 45 6.1.1 Chargino Contribution . 45 6.1.2 Neutralino and slepton contributions . 49 6.2 B(µ ! eγ) in the Minimally Supersymmetric Standard Model . 50 6.2.1 Chargino Component to B(µ ! eγ)...........
    [Show full text]
  • US Particle Physics: Scientific Opportunities a Strategic Plan for the Next Ten Years
    US Particle Physics: Scientific Opportunities A Strategic Plan for the Next Ten Years Report of the Particle Physics Project Prioritization Panel 29 May 2008 Three frontiers of research in particle physics form an interlocking framework that addresses fundamental questions about the laws of nature and the cosmos. US Particle Physics: Scientific Opportunities A Strategic Plan for the Next Ten Years Report of the Particle Physics Project Prioritization Panel 29 May 2008 i In November 2007, at the request of the Office of High Energy Physics of the Department of Energy and the National Science Foundation, the High Energy Physics About Advisory Panel reconstituted the Particle Physics Project Prioritization Panel for the purpose of developing a plan for US particle physics for the coming decade under a variety of budget assumptions. Appendix A of this report gives the charge to the P5 the panel; Appendix B lists its membership. To carry out this charge the panel organized three information-gathering meetings, at Fermilab in January, at Stanford Linear P5 Subpanel Accelerator Center in February, and at Brookhaven National Laboratory in March of 2008. Appendix C gives the agendas for these meetings. Besides talks by experts in the field, each of the three meetings included a Town Meeting, an open session where members of the community could voice their advice, suggestions and concerns to the panel. The panel also invited letters from the worldwide particle physics community, to offer their points of view for consideration. The panel held an additional meeting in early April to put together the first draft of this report.
    [Show full text]
  • Data Flow in the Mu3e Filter Farm
    Data Flow in the Mu3e Filter Farm von Marius K¨oppel Masterarbeit in Physik vorgelegt dem Fachbereich Physik, Mathematik und Informatik (FB 08) der Johannes Gutenberg-Universit¨at Mainz am 26. September 2019 1. Gutachter: Prof. Dr. Niklaus Berger 2. Gutachter: Prof. Dr. Patrick Achenbach Ich versichere, dass ich die Arbeit selbstst¨andig verfasst und keine anderen als die angegebenen Quellen und Hilfsmittel benutzt sowie Zitate kenntlich gemacht habe. Mainz, den 26. September 2019 Marius K¨oppel Mu3e collaboration Institut fur¨ Kernphysik Johann-Joachim-Becher-Weg 45 Johannes Gutenberg-Universit¨at D-55128 Mainz [email protected] Abstract The Mu3e experiment at the Paul Scherrer Institute searches for the decay µ+ → e+e+e−. This decay violates charged lepton flavour conservation - so an observation would be a clear indication for Physics Beyond the Standard Model of particle physics. The Mu3e experiment aims for an ultimate sensitivity of one in 1016 µ decays. To this end, more than one billion µ tracks per second need to be detected and reconstructed. Since the corresponding data of about 1 TB/s cannot be saved to disk, a trigger- less online readout system needs to be designed which is able to analyze the data while running. A farm with PCs equipped with powerful graphics processing units will perform the data reduction. In this work the missing pieces of the Field Programmable Gate Array based system which is used to preprocess, sort and transport the data from the detector to the filter farm and also configures the detector are designed and tested. iii Zusammenfassung Das Mu3 Experiment am Paul Scherrer Institut sucht nach dem Zerfall µ+ → e+e+e−.
    [Show full text]
  • PSI Scientific Report 2010
    PSI Scientific Report 2010 Paul Scherrer Institut, 5232 Villigen PSI, Switzerland Tel. +41 (0)56 310 21 11, Fax +41 (0)56 310 21 99 www.psi.ch PSI Scientific Report 2010 Cover photo: PSI researchers Marcel Hofer and Jérôme Bernard working an Pharmacist Susanne Geistlich preparing a fuel-cell system developed in the inactive components of a collaboration with Belenos Clean radio pharmaceutic at PSI‘s Center for Power AG. Radiopharmaceutical Sciences. (Photo: Scanderbeg Sauer Photography) (Photo: Scanderbeg Sauer Photography) PSI Scientifi c Report 2010 PSI Scientifi c Report 2010 Published by Paul Scherrer Institute Editor Paul Piwnicki English language editing Trevor Dury Coordination Evelyne Gisler Design and Layout Irma Herzog Photographs PSI, unless stated otherwise Printing Sparn Druck + Verlag AG, Möhlin Available from Paul Scherrer Institute Communications Services 5232 Villigen PSI, Switzerland Phone +41 (0)56 310 21 11 www.psi.ch PSI public relations [email protected] Communications offi cer Dagmar Baroke ISSN 1662-1719 Copying is welcomed, provided the source is acknowledged and an archive copy sent to PSI. Paul Scherrer Institute, April 2011 Table of contents 3 4 World-class research benefi ts our industry Foreword from the director 7 SwissFEL 17 Research focus and highlights 18 Synchrotron light 28 Neutrons and muons 36 Particle physics 40 Micro- and nanotechnology 44 Biomolecular research 48 Radiopharmacy 52 Nuclear Chemistry 54 Large research facilities 56 Proton Therapy 60 General Energy 70 CCEM-CH 72 Nuclear energy and safety 84 Environment and energy systems analysis 91 User facilities 92 PSI accelerators 96 Swiss Light Source (SLS) 98 Spallation Neutron Source (SINQ) 100 Ultra-Cold Neutron Source (UCN) 102 Swiss Muon Source (SμS) 105 Technology transfer 111 Facts and fi gures 112 PSI in 2010 – an overview 114 Commission and committees 116 Organizational Structure 117 Publications Photo: Scanderbeg Sauer Photography Foreword 5 World-class research benefi ts our industry Dear Reader, DECTRIS.
    [Show full text]
  • Physics of Fundamental Symmetries and Interactions - PSI2019 / Programme Tuesday, 22 October 2019 Physics of Fundamental Symmetries and Interactions - PSI2019
    Physics of fundamental Symmetries and Interactions - PSI2019 / Programme Tuesday, 22 October 2019 Physics of fundamental Symmetries and Interactions - PSI2019 Tuesday, 22 October 2019 BBQ - Drinks & Posters - WHGA/001 - Auditorium (16:30 - 19:30) time [id] title presenter 16:45 [2] Probing neutrino nature and time reversal symmetry violation in elastic Dr SOBKOW, Wieslaw scattering of low energy neutrinos on polarized electrons in presence of nonstandard couplings 16:49 [48] Study of Future 3D Calorimetry Based on LYSO or LaBrCe Crystals for SCHWENDIMANN, Patrick High Energy Precision Physics 16:50 [79] The Mu3e Data Acqusistion System BERGER, Niklaus 16:51 [152] Dispersive treatment of the EM radiative corrections to the pion vector MONNARD, Joachim form factor 16:52 [122] Sensitive and stable vector magnetometer for operation in zero and finite Dr BONDAR, Vira fields 16:53 [150] Study on Aging of Photomultiplier Tubes for MEG II Liquid Xenon TOYODA, Kazuki Calorimeter 16:54 [124] Status of the neutron lifetime experiment $\tau$SPECT KAHLENBERG, Jan ROSS, Kim Ulrike 16:55 [98] Project 8: First application of CRES to tritium decay Prof. FERTL, Martin 16:56 [119] Axion-Dark-Matter Search using Cold Neutrons SCHULTHESS, Ivo 16:57 [135] Study on Time Offset Effect for Scintillation Detectors with YANAI, Kosuke Series-Connected SiPM Readout 16:58 [29] The power distribution system for the Mu3e experiment. WAUTERS, Frederik 16:59 [46] Effcient in-trap laser-induced loading of rare species into an EBIT for high- KÖNIG, Charlotte precision mass spectrometry at Pentatrap 17:00 [62] GADGET: a novel ultra-cold neutron gaseous detector for the n2EDM Mr CHEN, Jianqi project Mr SAENZ, William 17:01 [115] muEDM: Search for a Muon Electric Dipole Moment at PSI SAKURAI, Mikio 17:02 [128] Measurements for Control of Magnetic Field Related Systematic Effects AYRES, Nicholas for the PSI Neutron Electric Dipole Moment Experiment 17:03 [66] Search for muon catalyzed $d^3He$ fusion.
    [Show full text]