Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Search for the B →y (4260)K, y (4260) →j /ψπ+π- decays. / Belle Collaboration ; Кроковный, Павел Петрович; Шебалин, Василий Евгеньевич.
в: Physical Review D, Том 99, № 7, 071102, 12.04.2019.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Search for the B →y (4260)K, y (4260) →j /ψπ+π- decays
AU - The BELLE collaboration
AU - Garg, R.
AU - Bhardwaj, V.
AU - Singh, J. B.
AU - Adachi, I.
AU - Ahn, J. K.
AU - Aihara, H.
AU - Al Said, S.
AU - Asner, D. M.
AU - Aulchenko, V.
AU - Aushev, T.
AU - Ayad, R.
AU - Babu, V.
AU - Bahinipati, S.
AU - Bansal, V.
AU - Beleño, C.
AU - Bilka, T.
AU - Biswal, J.
AU - Bobrov, A.
AU - Bozek, A.
AU - Bračko, M.
AU - Cao, L.
AU - Červenkov, D.
AU - Chen, A.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Cho, H. E.
AU - Cho, K.
AU - Choi, S. K.
AU - Choi, Y.
AU - Cinabro, D.
AU - Cunliffe, S.
AU - Dash, N.
AU - Di Carlo, S.
AU - DoleŽal, Z.
AU - Dong, T. V.
AU - Drásal, Z.
AU - Eidelman, S.
AU - Fast, J. E.
AU - Fulsom, B. G.
AU - Gaur, V.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Giri, A.
AU - Golob, B.
AU - Grzymkowska, O.
AU - Haba, J.
AU - Matvienko, D.
AU - Usov, Y.
AU - Zhilich, V.
AU - Zhulanov, V.
AU - Кроковный, Павел Петрович
AU - Шебалин, Василий Евгеньевич
N1 - Publisher Copyright: © 2019 authors.
PY - 2019/4/12
Y1 - 2019/4/12
N2 - We report the results of a search for the B→Y(4260)K, Y(4260)→J/ψπ+π- decays. This study is based on a data sample corresponding to an integrated luminosity of 711 fb-1, collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We investigate the J/ψπ+π- invariant mass distribution in the range 4.0 to 4.6 GeV/c2 using both B+→J/ψπ+π-K+ and B0→J/ψπ+π-KS0 decays. We find excesses of events above the background levels, with significances of 2.1 and 0.9 standard deviations for charged and neutral B→Y(4260)K decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, B(B+→Y(4260)K+)×B(Y(4260)→J/ψπ+π-)<1.4×10-5 and B(B0→Y(4260)K0)×B(Y(4260)→J/ψπ+π-)<1.7×10-5 at the 90% confidence level.
AB - We report the results of a search for the B→Y(4260)K, Y(4260)→J/ψπ+π- decays. This study is based on a data sample corresponding to an integrated luminosity of 711 fb-1, collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We investigate the J/ψπ+π- invariant mass distribution in the range 4.0 to 4.6 GeV/c2 using both B+→J/ψπ+π-K+ and B0→J/ψπ+π-KS0 decays. We find excesses of events above the background levels, with significances of 2.1 and 0.9 standard deviations for charged and neutral B→Y(4260)K decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, B(B+→Y(4260)K+)×B(Y(4260)→J/ψπ+π-)<1.4×10-5 and B(B0→Y(4260)K0)×B(Y(4260)→J/ψπ+π-)<1.7×10-5 at the 90% confidence level.
KW - MONTE-CARLO
KW - PHOTOS
KW - STATE
KW - TOOL
UR - http://www.scopus.com/inward/record.url?scp=85065197551&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.99.071102
DO - 10.1103/PhysRevD.99.071102
M3 - Article
AN - SCOPUS:85065197551
VL - 99
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 7
M1 - 071102
ER -
ID: 20042729