Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Search for B- →μ- ν μ Decays at the Belle Experiment. / Belle Collaboration.
в: Physical Review Letters, Том 121, № 3, 031801, 18.07.2018.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Search for B- →μ- ν μ Decays at the Belle Experiment
AU - The BELLE collaboration
AU - Sibidanov, A.
AU - Varvell, K. E.
AU - Adachi, I.
AU - Aihara, H.
AU - Al Said, S.
AU - Asner, D. M.
AU - Aushev, T.
AU - Ayad, R.
AU - Babu, V.
AU - Badhrees, I.
AU - Bahinipati, S.
AU - Bakich, A. M.
AU - Bansal, V.
AU - Barberio, E.
AU - Behera, P.
AU - Bhuyan, B.
AU - Biswal, J.
AU - Bozek, A.
AU - Bračko, M.
AU - Browder, T. E.
AU - Červenkov, D.
AU - Chang, P.
AU - Chekelian, V.
AU - Chen, A.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Cho, K.
AU - Choi, S. K.
AU - Choi, Y.
AU - Cinabro, D.
AU - Czank, T.
AU - Dash, N.
AU - Di Carlo, S.
AU - DoleŽal, Z.
AU - Drásal, Z.
AU - Dutta, D.
AU - Eidelman, S.
AU - Epifanov, D.
AU - Fast, J. E.
AU - Ferber, T.
AU - Fulsom, B. G.
AU - Gaur, V.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Goldenzweig, P.
AU - Greenwald, D.
AU - Shebalin, V.
AU - Vorobyev, V.
AU - Zhilich, V.
AU - Zhulanov, V.
N1 - Publisher Copyright: © 2018 authors. Published by the American Physical Society.
PY - 2018/7/18
Y1 - 2018/7/18
N2 - We report the results of a search for the rare, purely leptonic decay B-→μ-ν μ performed with a 711 fb-1 data sample that contains 772×106 BB pairs, collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B-→μ-νμ)=(6.46±2.22±1.60)×10-7 or a frequentist 90% confidence level interval on the B-→μ-ν μ branching fraction of [2.9,10.7]×10-7.
AB - We report the results of a search for the rare, purely leptonic decay B-→μ-ν μ performed with a 711 fb-1 data sample that contains 772×106 BB pairs, collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B-→μ-νμ)=(6.46±2.22±1.60)×10-7 or a frequentist 90% confidence level interval on the B-→μ-ν μ branching fraction of [2.9,10.7]×10-7.
KW - MONTE-CARLO
KW - IDENTIFICATION
KW - KEKB
UR - http://www.scopus.com/inward/record.url?scp=85050497022&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.121.031801
DO - 10.1103/PhysRevLett.121.031801
M3 - Article
AN - SCOPUS:85050497022
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 3
M1 - 031801
ER -
ID: 15919471