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Status: Approved for completion
in 2017

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) x 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 +gamma 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
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. Shalˇugin, 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

Country or International
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
USA Batavia, IL Fermilab
Charlottesville, VA UVa
Lexington, KY UK
Ukraine Kharkov ISMA NASU

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