Measurement of the B0s→μ+μ− decay properties and search for the B0→μ+μ− and B0s→μ+μ−γ decays

Measurement of the B0s→μ+μ− decay properties and search for the B0→μ+μ− and B0s→μ+μ−γ decays

Detaylı Bibliyografya
Parent link:	Physical Review D: particles, fields, gravitation, and cosmology.— , 1970- Vol. 105, iss. 1.— 2022.— [012010, 34 p.]
Kurumsal yazarlar:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники
Diğer Yazarlar:	Aaij R. Roel, Beteta C. A. Carlos Abellan, Ackernley T., Kharisova A. E. Anastasiya Evgenjevna, Panshin G. L. Gennady Leonidovich, Vagner A. R. Aleksandr Rudolfovich
Özet:	Title screen An improved measurement of the decay B0s→μ+μ− and searches for the decays B0→μ+μ− and B0s→μ+μ−γ are performed at the LHCb experiment using data collected in proton-proton collisions at √s=7, 8 and 13 TeV, corresponding to integrated luminosities of 1, 2 and 6 fb−1, respectively. The B0s→μ+μ− branching fraction and effective lifetime are measured to be B(B0s→μ+μ−)=(3.09+0.46+0.15−0.43−0.11)×10−9 and τ(B0s→μ+μ−)=(2.07±0.29±0.03) ps, respectively, where the uncertainties include both statistical and systematic contributions. No significant signal for B0→μ+μ− and B0s→μ+μ−γ decays is found and the upper limits B(B0→μ+μ−)<2.6×10−10 and B(B0s→μ+μ−γ)<2.0×10−9 at 95% confidence level are determined, where the latter is limited to the range mμμ>4.9 GeV/c2. Additionally, the ratio between the B0→μ+μ− and B0s→μ+μ− branching fractions is measured to be Rμ+μ−<0.095 at 95% confidence level. The results are in agreement with the Standard Model predictions.
Dil:	İngilizce
Baskı/Yayın Bilgisi:	2022
Konular:	электронный ресурс труды учёных ТПУ
Online Erişim:	http://earchive.tpu.ru/handle/11683/80995 https://doi.org/10.1103/PhysRevD.105.012010
Materyal Türü:	Elektronik Kitap Bölümü
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669090

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