COMET - A submission to the 2020 update of the European Strategy for Particle Physics on behalf of the COMET collaboration - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2019

COMET - A submission to the 2020 update of the European Strategy for Particle Physics on behalf of the COMET collaboration

C. Cârloganu
A. Drutskoy
  • Fonction : Auteur
M. Finger
  • Fonction : Auteur
D.N. Grigoriev
  • Fonction : Auteur
Y. Kuno
  • Fonction : Auteur
P. Lebrun
R.P. Litchfield
  • Fonction : Auteur
D. Lomidze
  • Fonction : Auteur
D. Shoukavy
  • Fonction : Auteur
I. Tevzadze
  • Fonction : Auteur
Z.B. Tsamalaidze
  • Fonction : Auteur
Y. Uchida
  • Fonction : Auteur
V. Vrba
  • Fonction : Auteur
K. Zuber
  • Fonction : Auteur

Résumé

The search for charged lepton flavour violation (CLFV) has enormous discovery potential in probing new physics Beyond the Standard Model (BSM). Among the muonic CLFV processes, $\mu \to e$ conversion is one of the most important processes, having several advantages compared to other such processes. We describe the COMET experiment, which is searching for $\mu \to e$ conversion in a muonic atom at the J-PARC proton accelerator laboratory in Japan. The COMET experiment has taken a staged approach; the first stage, COMET Phase-I, is currently under construction at J-PARC, and is aiming at a factor 100 improvement over the current limit. The second stage, COMET Phase-II is seeking another 100 improvement (a total of 10,000), allowing a single event sensitivity (SES) of $2.6 \times 10^{-17}$ with $2\times 10^{7}$ seconds of data-taking. Further improvements by one order of magnitude, which arise from refinements to the experimental design and operation, are being considered whilst staying within the originally-assumed beam power and beam time. Such a sensitivity could be translated into probing many new physics constructions up to $\mathcal{O}(10^{4})$ TeV energy scales, which would go far beyond the level that can be reached directly by collider experiments. The search for CLFV $\mu \to e$ conversion is thus highly complementary to BSM searches at the LHC.

Dates et versions

hal-02066526 , version 1 (13-03-2019)

Identifiants

Citer

J.C. Angélique, C. Cârloganu, W. da Silva, A. Drutskoy, M. Finger, et al.. COMET - A submission to the 2020 update of the European Strategy for Particle Physics on behalf of the COMET collaboration. 2019. ⟨hal-02066526⟩
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