Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Observation of I (2S) →γηb (1S) Decay. / Belle Collaboration.
в: Physical Review Letters, Том 121, № 23, 232001, 03.12.2018.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Observation of I (2S) →γηb (1S) Decay
AU - The BELLE collaboration
AU - Fulsom, B. G.
AU - Pedlar, T. K.
AU - Adachi, I.
AU - Aihara, H.
AU - Al Said, S.
AU - Asner, D. M.
AU - Atmacan, H.
AU - Aulchenko, V.
AU - Aushev, T.
AU - Ayad, R.
AU - Babu, V.
AU - Badhrees, I.
AU - Bakich, A. M.
AU - Bansal, V.
AU - Behera, P.
AU - Beleño, C.
AU - Berger, M.
AU - Bhardwaj, V.
AU - Bhuyan, B.
AU - Bilka, T.
AU - Biswal, J.
AU - Bondar, A.
AU - Bonvicini, G.
AU - Bozek, A.
AU - Bračko, M.
AU - Browder, T. E.
AU - Cao, L.
AU - Červenkov, D.
AU - Chekelian, V.
AU - Chen, A.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Cho, K.
AU - Choi, S. K.
AU - Choi, Y.
AU - Choudhury, S.
AU - Cinabro, D.
AU - Eidelman, S.
AU - Epifanov, D.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Krokovny, P.
AU - Kuzmin, A.
AU - Matvienko, D.
AU - Shebalin, V.
AU - Shwartz, B.
AU - Vinokurova, A.
AU - Vorobyev, V.
AU - Zhilich, V.
AU - Zhulanov, V.
N1 - Publisher Copyright: © 2018 authors. Published by the American Physical Society.
PY - 2018/12/3
Y1 - 2018/12/3
N2 - We report the observation of I(2S)→γηb(1S) decay based on an analysis of the inclusive photon spectrum of 24.7 fb-1 of e+e- collisions at the I(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure a branching fraction of B[I(2S)→γηb(1S)]=(6.1-0.7-0.6+0.6+0.9)×10-4 and derive an ηb(1S) mass of 9394.8-3.1-2.7+2.7+4.5 MeV/c2, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.
AB - We report the observation of I(2S)→γηb(1S) decay based on an analysis of the inclusive photon spectrum of 24.7 fb-1 of e+e- collisions at the I(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure a branching fraction of B[I(2S)→γηb(1S)]=(6.1-0.7-0.6+0.6+0.9)×10-4 and derive an ηb(1S) mass of 9394.8-3.1-2.7+2.7+4.5 MeV/c2, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.
KW - J/PSI
UR - http://www.scopus.com/inward/record.url?scp=85058089146&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.121.232001
DO - 10.1103/PhysRevLett.121.232001
M3 - Article
C2 - 30576207
AN - SCOPUS:85058089146
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 23
M1 - 232001
ER -
ID: 17753160