B. Lee Roberts, PANIC05, Santa Fe, 27 October, 2005 - p. 1/35 Muon (g-2) Status and Plans for the Future B. Lee Roberts Department of Physics Boston University.

Slides:

Advertisements

Similar presentations

Flavor Violation in SUSY SEESAW models 8th International Workshop on Tau-Lepton Physics Tau04 Junji Hisano (ICRR, U of Tokyo)

Advertisements

(g – 2)  B. Lee Roberts e + e - collisions  to  : Novosibirsk 1 March p. 1/30 Muon (g-2) to 0.2 ppm B. Lee Roberts Department of Physics Boston.

B. Lee Roberts, SPIN2004 –Trieste -11 September p. 1/54 New Results on Muon (g-2) Past, Present and Future Experiments B. Lee Roberts Department.

B. Lee Roberts, NuFact WG4: 24 June p. 1/36 Muon (g-2) Past, Present and Future B. Lee Roberts Department of Physics Boston University

Recent Electroweak Results from the Tevatron Weak Interactions and Neutrinos Workshop Delphi, Greece, 6-11 June, 2005 Dhiman Chakraborty Northern Illinois.

Muon g-2 experimental results & theoretical developments

DPF Victor Pavlunin on behalf of the CLEO Collaboration DPF-2006 Results from four CLEO Y (5S) analyses:  Exclusive B s and B Reconstruction at.

Measurement of the muon anomaly to high and even higher precision David Hertzog* University of Illinois at Urbana-Champaign * Representing the E821 Collaboration:

B. Lee Roberts, College of William and Mary, 24 March p. 1/61 The Muon: A Laboratory for Particle Physics Everything you always wanted to know about.

Basic Measurements: What do we want to measure? Prof. Robin D. Erbacher University of California, Davis References: R. Fernow, Introduction to Experimental.

B. Lee Roberts, BNL PAC 9 September p. 1/29 Muon (g-2) to 0.20 ppm P969 B. Lee Roberts Representing the new g-2 collaboration: Boston, BNL, BINP,

 B. Lee Roberts, Heidelberg – 11 June p. 154 The Magnetic and Electric Dipole Moments of the Muon Lee Roberts Department of Physics Boston University.

B. Lee Roberts, Welcome and Overview – Lepton Moments June p. 1/19 Welcome to Lepton Moments 2006! B. Lee Roberts Department of Physics.

B. Lee Roberts, Oxford University, 19 October p. 1/55 The Muon: A Laboratory for Particle Physics Everything you always wanted to know about the.

WG4:  physics B. Lee Roberts, on behalf of the Intense Muon Physics Working Group - p. 1/48 WG4 Summary and Future Plans The muon trio and more B. Lee.

B. Lee Roberts, Fermilab – 9 November p. 1/28 The Physics Case for a Dedicated Muon EDM Experiment in the Project X Era Lee Roberts BU (in collaboration.

B. Lee Roberts, HIFW04, Isola d’Elba, 6 June p. 1/39 Future Muon Dipole Moment Measurements at a high intensity muon source B. Lee Roberts Department.

A new method of measuring the muon g-2 Francis J.M. Farley Trinity College Dublin.

1. 2 July 2004 Liliana Teodorescu 2 Introduction  Introduction  Analysis method  B u and B d decays to mesonic final states (results and discussions)

1 Yurii Maravin, SMU/CLEO Snowmass 2001 Experimental Aspects of  physics at CLEO-c measurements of fundamental quantities, tests of weak couplings and.

B. Lee Roberts, PSI - 15 August p. 1/54 The Muon: A Laboratory for Particle Physics B.L. Roberts Department of Physics Boston University roberts.

Electric Dipole Moment Goals and “New Physics” William J. Marciano 12/7/09 d p with e-cm sensitivity! Why is it important?

Muon and electron g-2 A charged particle which has spin angular momentum s will have also a magnetic moment m. The ratio of the magnetic to angular moments.

CMD-2 and SND results on the  and  International Workshop «e+e- Collisions from  to  » February 27 – March 2, 2006, BINP, Novosibirsk, Russia.

Conveneers: M. Grassi (INFN, Pisa), K. Ishida (RIKEN), Y. Semertzidis (BNL) Summary of WG4, Part Two. Yannis Semertzidis, BNL 1 August, 2004 Most muon.

25/07/2002G.Unal, ICHEP02 Amsterdam1 Final measurement of  ’/  by NA48 Direct CP violation in neutral kaon decays History of the  ’/  measurement by.

Z AND W PHYSICS AT CEPC Haijun Yang, Hengne Li, Qiang Li, Jun Guo, Manqi Ruan, Yusheng Wu, Zhijun Liang 1.

Muon g-2 Experiment at Fermilab, Liang Li, SPCS 2013 June 5 th, Shanghai Particle Physics and Cosmology Symposium - SPCS2013 The (new) muon g-2.

Muon (g-2) Experiments Matthew Wright Luo Ouyang.

Energy calibration at LHC J. Wenninger. Motivation In general there is not much interest for accurate knowledge of the momentum in hadron machines. 

1 Lepton Electric Dipole Moments in Supersymmetric Type II Seesaw Model Toru Goto, Takayuki Kubo and Yasuhiro Okada, “Lepton electric dipole moments in.

G-2 accelerator and cryo needs Mary Convery Muon Campus Review 1/23/13.

B. Lee Roberts ISS Plenary Meeting: RAL 26 April p. 1/39 Muon Physics at the Front End of a  Factory An introduction B. Lee Roberts Boston University.

June 17, 2004 / Collab Meeting Strategy to reduce uncertainty on a  to < 0.25 ppm David Hertzog University of Illinois at Urbana-Champaign n Present data.

Initial State Radiation and Inclusive Hadron Production at B A B AR Fabio Anulli University of Perugia, INFN – Laboratori Nazionali di Frascati On behalf.

Measurement of Vus. Recent NA48 results on semileptonic and rare Kaon decays Leandar Litov, CERN On behalf of the NA48 Collaboration.

Yasuhiro Okada (KEK) February 4, 2005 at KEK

Charm Physics Potential at BESIII Kanglin He Jan. 2004, Beijing

 B. Lee Roberts, KEK – 21 March p. 1/27 The Magnetic and Electric Dipole Moments of the Muon Lee Roberts for the muon g-2 collaboration Department.

Yannis K. Semertzidis Brookhaven National Laboratory Fundamental Interactions Trento/Italy, June 2004 Theoretical and Experimental Considerations.

Brian Plimley Physics 129 November Outline  What is the anomalous magnetic moment?  Why does it matter?  Measurements of a µ  : CERN.

Huaizhang Deng Yale University Precise measurement of (g-2)  University of Pennsylvania.

Muon g-2 and Electric Dipole Moments in Storage Rings: Powerful Probes of Physics Beyond the SM Yannis K. Semertzidis Brookhaven National Lab “Muon g-2.

Study of e+e- annihilation at low energies Vladimir Druzhinin Budker Institute of Nuclear Physics (Novosibirsk, Russia) SND - BaBar Lepton-Photon, August,

Muon Anomalous Magnetic Moment --a harbinger of new physics Chang Liu Physics 564.

Achim Denig Radiative DA F NE MENU 2004 Measurement of the Hadronic Cross Section via Radiative Return at DA  NE Achim Denig for the KLOE Collaboration.

E + e - hadronic cross section and muon g-2 Brendan Casey PIC 2014 September 17, 2014 Sept 11, 2014 muon g-2 experimental hall.

(g – 2)  James Miller CERN Workshop October p. 1/27 Muon (g-2) to 0.25 ppm James Miller (For the new Muon (g-2) Collaboration, E969) Department.

First results from CMD-3 detector at VEPP-2000 collider Budker Institute of Nuclear Physics, SB RAS, Novosibirsk, Russia September 2011 E.Solodov (for.

The Muon g-2 Experiment – Investigating how the spin of a muon is affected as it moves through a magnetic field Astrid Rodrigues.

Belle General meeting Measurement of spectral function in the decay 1. Motivation 2. Event selection 3. mass spectrum (unfolding) 4. Evaluation.

Measurement of the Muon Anomalous Magnetic Moment to 0.7 ppm Results from the Data of 2000 Yannis K. Semertzidis Brookhaven National Lab Muon g-2 Collaboration.

1) Status of the Muon g-2 Experiment 2) EDM Searches in Storage Rings Yannis K. Semertzidis Brookhaven National Lab Muon g-2 Collaboration and EDM Collaboration.

Part I: Muon g-2 theory update / motivation Part II: Possibilities for FNAL experiment at 0.1 ppm David Hertzog University of Illinois at Urbana-Champaign.

Yannis K. Semertzidis Brookhaven National Laboratory HEP Seminar SLAC, 27 April 2004 Muon g-2: Powerful Probe of Physics Beyond the SM. Present Status.

E989 Muon (g-2) EMG Lee Roberts for the E989 Collaboration B. Lee Roberts - EMG- 13 February

Electric Dipole Moment of the Deuteron Experiment: EDM Violates T-Symmetry: Connected to CP-Violation and the Matter-Antimatter Asymmetry of the Universe.

B Decays Beyond the Standard Model Xiao-Gang He NTU 1.Introduction 2.B to K pi and pi pi 3.B to phi Ks and B to K* gamma decays 4.Same sign diplepton decays.

1 Muon g-2 Experiment at BNL Presented by Masahiko Iwasaki (Tokyo Institute of Technology) Akira Yamamoto (KEK) for E821 g-2 Collaboration: Boston, BNL,

Recent results on non-DDbar decays of  (3770) at BES HaiLong Ma [For BES Collaboration] The IVIIth Rencontres de Moriond session devoted to QCD AND HIGH.

Measurement of the total hadronic cross-section at e+e- machines I. Logashenko Boston University (Boston, USA) Budker Institure of Nuclear Physics (Novosibirsk,

Yannis K. Semertzidis Brookhaven National Laboratory New opportunities at CERN CERN, 12 May 2009 Storage Ring EDM Experiments The storage ring method can.

– + + – Search for the μEDM using a compact storage ring A. Adelmann 1, K. Kirch 1, C.J.G. Onderwater 2, T. Schietinger 1, A. Streun 1 1 Paul Scherrer.

The Anomalous Magnetic Dipole Moment of the Muon

Marco Incagli - INFN Pisa CERN - 29 apr 2004

Electric Dipole Moments: Searches at Storage Rings

Electric Dipole Moments: Searches at Storage Rings

The Impact of BaBar ISR data on the SM Muon Anomaly Prediction

Barva Maura - Università Roma Tre On behalf of the KLOE Collaboration

Vacuum Polarization and the impact of BaBar data

Presentation transcript:

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 1/35 Muon (g-2) Status and Plans for the Future B. Lee Roberts Department of Physics Boston University

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 2/35 Magnetic moments, g-factors

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 3/35 The Muon Trio: Lepton Flavor Violation Muon MDM (g-2) chiral changing Muon EDM Dirac, Pauli moment

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 4/35 Electric and Magnetic Dipole Moments Transformation properties: An EDM implies both P and T are violated. An EDM at a measureable level would imply non-standard model CP. The baryon/antibaryon asymmetry in the universe, needs new sources of CP.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 5/35 Present EDM Limits ParticlePresent EDM limit (e-cm) SM value (e-cm) n future  exp to * final limit will be better, * projected.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 6/35 Unlike the EDM, there is a large SM value for the MDM The Electron: to the level of the experimental error (4ppb), Contribution of μ, (or anything heavier than the electron) is ≤4 ppb. For the muon, the relative contribution of heavier particles

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 7/35 Standard Model Value for (g-2)

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 8/35 SM value dominated by hadronic issues: Lowest order hadronic contribution ( ~ 60 ppm) Hadronic light-by-light contribution ( ~ 1 ppm) The error on these two contributions will ultimately limit the interpretation of a more precise muon (g-2) measurement.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 9/35 Lowest Order Hadronic contribution from e + e - annihilation

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 10/35 a(had) from hadronic  decay? Assume: CVC, no 2 nd -class currents, isospin breaking corrections. n.b.  decay has no isoscalar piece, while e + e - does Many inconsistencies in comparison of e + e - and  decay: - Using CVC to predict  branching ratios gives 0.7 to 3.6  discrepancies with reality. - F  from  decay has different shape from e + e -.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 11/35 New Physics; SUSY (with large tanβ )

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 12/35 SUSY connection between a , d μ, μ → e

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 13/35 Muon (g-2) : E821 Superconducting “superferric” storage ring –superconducting inflector –fast muon kicker –magic , –direct muon injection with a fast non-ferric kicker

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 14/35 Use an E field for vertical focusing spin difference frequency =  s -  c 0

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 15/35 Spin Precession Frequencies:  in B field with both an MDM and EDM The motional E - field, β X B, is much stronger (~GV/m) than laboratory electric fields.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 16/35 Spin Precession Frequencies:  in B field with both an MDM and EDM The EDM causes the spin to precess out of plane and increases |  | The motional E - field, β X B, is much stronger (~GV/m) than laboratory electric fields.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 17/35 Spin Precession Frequencies:  in B field with both an MDM and EDM The if the EDM were 2.8 x e cm,  a would increase by 2.9 ppm.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 18/35 Muon (g-2): Store  ± in a storage ring magnetic field averaged over azumuth in the storage ring

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 19/35 Muon (g-2) Present precision: ± 0.5 ppm

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 20/35 Can we improve the sensitivity of this confrontation between experiment and theory? Yes –E969 at BNL has scientific approval to go from 0.5 ppm → 0.2ppm –At a more intense muon facility we could do better. Will Theory Improve beyond 0.6 ppm? Yes –better R measurements from: KLOE, BaBar, Belle, SND and CMD2 at Novosibirsk –More work on the strong interaction Theory could eventually improve to ~0.2 ppm

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 21/35 Exclusion/Limitations on New Physics

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 22/35 SUSY, dark matter, (g-2)   CMSSM (constrained minimal supersymmetric model) scalar mass gaugino mass

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 23/35 Future Comparison:  E969 =  now

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 24/35 Future Comparison:  E969  Historically (g-2) has played an important role in restricting models of new physics.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 25/35 E969 at BNL Scientific approval in September 2004 –at present: no funds for construction or running Goal: total error = 0.2 ppm –lower systematic errors –more beam

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 26/35 Strategy of the improved experiment More muons – E821 was statistics limited  stat = 0.46 ppm,  syst = 0.3 ppm –Backward-decay, higher-transmission beamline –Double the quadrupoles in the  decay line

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 27/35 Strategy of the improved experiment New, open-end inflector Upgrade detectors, electronics, DAQ x 2 in flux

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 28/35 E969: Systematic Error Goal Systematic uncertainty (ppm) E969 Goal Magnetic field –  p Anomalous precession –  a

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 29/35 a μ implications for the muon EDM This paper, published before our February 2001 announcement predicts a large muon EDM, and a corresponding SUSY contribution to a μ comparable to what we might be observing, with the e - EDM predicted to be 0.1 of the present limit.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 30/35 a μ implications for the muon EDM

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 31/35 Dedicated EDM measurement: operate with  ≈ 5 << 29.3 use a radial E-field to turn off (g-2) precession Place detectors above and below the vacuum chamber and look for an up/down asymmetry which builds up with time

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 32/35 Beam Needs: NP 2 the figure of merit is N μ times the polarization. We need to reach the e-cm level. Since SUSY calculations range from to e cm, more muons is better.  = 5*10 -7 (Up+Down) time (  s) (Up-Down)

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 33/35 Where E821 came from:

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 34/35 Today: All E821 results were obtained with a “blind” analysis. world average

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 35/35 Summary (g-2)  provides a precise check of the standard model, and accesses new physics in a way complementary to other probes. (g-2)  provides serious constraints on physics beyond the standard model. The hadronic contribution will eventually set the limit on useful precision, but substantial improvement can and will be made, both in theory and experiment beyond the present situation.

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 36/35

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 37/35 Recent News from Novosibirsk SND has just released their results (hep-ex/ ) for the cross section e + e - →  +  - over the . –Error on dispersion integral 50% higher than CMD2 –Good agreement with CMD2 –Completely independent from CMD2

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 38/35 Improved transmission into the ring Inflector Inflector aperture Storage ring aperture E821 Closed EndP969 Proposed Open End

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 39/35 Beyond E969? It’s not clear how far we can push the present technique. To get to 0.06 ppm presents many challenges. Perhaps a new storage ring design, and a smaller aperture. –detectors for another factor of 4 will be very challenging. At a proton driver/neutrino factory we certainly we can get more muons

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 40/35 E969: Systematic Error Goal Field improvements will involve better trolley calibrations, better tracking of the field with time, temperature stability of room, improvements in the hardware Precession improvements will involve new scraping scheme, lower thresholds, more complete digitization periods, better energy calibration Systematic uncertainty (ppm) E969 Goal Magnetic field –  p Anomalous precession –  a

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 41/35 Better agreement between exclusive and inclusive (  2) data than in analyses Agreement between Data (BES) and pQCD (within correlated systematic errors) use QCD use data use QCD Evaluating the Dispersion Integral from A. Höcker ICHEP04

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 42/35 Tests of CVC (A. H ö cker – ICHEP04)

B. Lee Roberts, PANIC05, Santa Fe, 27 October, p. 43/35 Shape of F  from e + e - and hadronic  decay zoom Comparison between t data and e+e- data from CDM2 (Novosibirsk) New precision data from KLOE confirms CMD2