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Search for New Physics in Experiments with the Fermilab High-Intensity Muon Beams
| Leader: | V.V. Glagolev |
| Scientific leader: | J.A. Budagov |
Participating Countries and International Organizations:
Belarus, Bulgaria, Georgia, Italy, Russia, Slovakia, USA, Ukraine.
Scientific Programme:
The muon anomalous magnetic moment aµ can be measured and computed to high precision. The comparison between experiment and the SM therefore provides a sensitive search for New Physics (NP). At present, both measurement and theory have sub-part-per-million (ppm) uncertainties, and the "g-2 test" is being used to constrain SM extensions. The difference between experiment and theory,
aµ(Expt-SM) = (255 ± 80) 
10 -11 (3,2 
, is a highly cited result and a possible
harbinger of new TeV-scale physics. Potential explanations of the deviation include: supersymmetry,
lepton substructure, dark matter loop etc., all well motivated by theory and consistent with other experimental
constraints. Fermilab experiment has a plan to reduce the experimental uncertainty by a factor of 4 or more.
A precise g-2 test, no matter where the final value lands, will sharply discriminate among models and will
enter as one of the central observables in a global analysis of any SM extensions.
The Mu2e experiment at Fermilab is a dedicated search for the CLFV process µ - N
e - N,
which is the coherent conversion
of a muon into an electron in the vicinity of a nucleus. Once neutrinos masses are included, the process is
allowed but effectively still absent since the rate is proportional to ( m 2ij/M 2W) 2 ,
where m 2ij is the mass difference
squared between i-th and j-th neutrino mass eigenstates, and MW is the mass of the W-boson.
The predicted rates for the µ -N e -N and µ + e +
CLFV processes are less than 10 -50 each. This makes this process a very
theoretically clean place to search for NP effects. In many NP models that include a description of neutrino
mass, the rates for these processes are enormously enhanced so that they occur at a level to which Mu2e
experiment will have sensitivity.
Expected main results in 2017:
- Simulation for e.m. calorimeter of the Mu2e experiment.
- Tests of the CsI e.m. calorimeter elements on the gamma sources and
electron beam.
- Creation and test of the CRV (cosmic ray veto) modules and counters on proton beam and cosmic muons.
- Development of the final software.
- Participation in development, teating and commissioning of the full DAQ system based on the MIDAS/ROME/PARAVIEW software frameworks
for the Muon G-2 experiment.
- Participation in the radiation hardness tests of the detector elements.
| List of projects: | |||
| Project | Leader |
Priority (period of realisation) |
|
| 1. | Search for new physics in experiments with the Fermilab high-intensity muon beams |
V.V. Glagolev | 1 (2015-2017) |
| List of Activities | |||||
| Activity or Experiment | Leaders | ||||
| Laboratory or other Division of JINR Responsible person | Main researchers | ||||
| 1. | Experiment Mu2e | V.V. Glagolev |
| ||
| DLNP | A.M. Artikov, N.V. Atanov, O.S. Atanova, N.S. Azaryan, V.Yu. Baranov, V.Yu. Batusov, J.A. Budagov, D.Sh. Chokheli, Yu.I. Davydov, D.L. Demin, V.B. Flyagin, A.V. Guskov, Yu.N. Kharzheev, V.I. Kolomoets, S.M. Kolomoets, M.V. Lyablin, Yu.A. Koultchitski, V.M. Romanov, A.V. Sazonova, A.N. Shalóugin, A.V. Simonenko, S.N. Studenov, I.A. Suslov, A.K. Suhanova, I.V. Titkova, V.V. Tereschenko, S.V. Tereschenko, Z.U. Usubov | ||||
| BLTP | D.I. Kazakov, G.A. Kozlov, O.V. Tarasov | ||||
| LIT | V.V. Korenkov, V.V. Uzhinsky | ||||
| VBLHEP | A. Galoyan | ||||
| Experiment Muon g-2 | N.V. Khomutov |
| |||
| DLNP | V.A. Baranov, V.N. Duginov, N.P. Kravchuk, N.A. Kuchinsky, T.N. Mamedov , A.I. Rudenko, V.P. Volnykh | ||||
| VBLHE | S.A. Movchan | ||||
| LRB | V.A. Krylov | ||||
| Collaboration | |||
| Country or International Organization | City | Institute or Laboratory | |
| Belarus | Minsk | INP BSU | |
| Bulgaria | Sofia | SU | |
| Georgia | Tbilisi | HEPI-TSU | |
| Italy | Pisa | UniPi | |
| Frascati | INFN LNF | ||
| Russia | Moscow, Troitsk | INR RAS | |
| Gatchina | PNPI | ||
| Slovakia | Bratislava | IP SAS | |
| CU | |||
| USA | Batavia, IL | Fermilab | |
| Charlottesville, VA | UVa | ||
| Lexington, KY | UK | ||
| Ukraine | Kharkov | ISMA NASU |
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