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Deep inelastic e-tau and mu-tau conversion in the NA64 experiment at the CERN SPS

Авторы: Gninenko S., Kovalenko S., Kuleshov S., Lyubovitskij V.E., Zhevlakov A.S.

Журнал: Physical Review D

Том: 98

Номер: 1

Год: 2018

Отчётный год: 2018

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Аннотация: We study the lepton flavor violating (LFV) e(mu) - mu conversion in deep inelastic scattering (DIS) of electrons (muons) on fixed-target nuclei. Our model-independent analysis is based on the set of low-energy effective four-fermion LFVoperators composed of leptons and quarks with the corresponding mass scales Lambda(k) for each operator. Using the estimated sensitivity of the search for this LFV process in events with large missing energy in the NA64 experiment at the CERN SPS, we derive lower limits for Lambda(k) and compared them with the corresponding limits existing in the literature. We show that the DIS e (mu) - tau conversion is able to provide a plenty of new limits as yet nonexisting in the literature. We also analyzed the energy spectrum of the final-state t and discussed the viability of the observation of this process in the NA64 experiment and ones akin to it. The case of polarized beams and targets is also discussed.

Индексируется WOS: 1

Индексируется Scopus: 1

Индексируется РИНЦ: 1

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