Bounds on lepton flavor violating physics and decays of neutral mesons from τ(μ)→3ℓ, ℓγγ-decays

Bounds on lepton flavor violating physics and decays of neutral mesons from τ(μ)→3ℓ, ℓγγ-decays

Detaylı Bibliyografya
Parent link:Physical Review D: covering particles, fields, gravitation, and cosmology
Vol. 99, iss. 3.— 2019.— [035020, 12 p.]
Müşterek Yazar: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Diğer Yazarlar: Dib C. O. Claudio, Gutsche T. Thomas, Kovalenko S. G. Sergey Grigorjevich, Lyubovitskiy (Lyubovitskij) V. E. Valery Efimovich, Schmidt I. A. Ivan
Özet:Title screen
We study two- and three-body lepton flavor violating (LFV) decays involving leptons and neutral vector bosons V=ρ0, ω, ϕ, J/ψ, Υ, Z0, as well as pseudoscalar P=π0, η, η′, ηc and scalar S=f0(500), f0(980), a0(980), χc0(1P) mesons, without referring to a specific mechanism of LFV realization. In particular, we relate the rates of the three-body LFV decays τ(μ)→3ℓ, where ℓ=μ or e, to the two-body LFV decays (V,P)→τμ(τe,μe), where V and P play the role of intermediate resonances in the decay process τ(μ)→3ℓ. From the experimental upper bounds for the branching ratios of τ(μ)→3ℓ decays, we derive upper limits for the branching ratios of (V,P)→τμ(τe,μe). We compare our results to the available experimental data and known theoretical upper limits from previous studies of LFV processes and find that some of our limits are several orders of magnitude more stringent. Using the idea of quark-hadron duality, we extract limits on various quark-lepton dimension-six LFV operators from data on lepton decays. Some of these limits are either new or stronger than those existing in the literature.
Режим доступа: по договору с организацией-держателем ресурса
Baskı/Yayın Bilgisi: 2019
Konular:
электронный ресурс
труды учёных ТПУ
мезоны
распады
лептонные распады
Online Erişim:https://doi.org/10.1103/PhysRevD.99.035020
Materyal Türü: Elektronik Kitap Bölümü
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660712

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