@article{b70ab7b592ac43e78f5bef7c0c009c80,
title = "Search for the B →y (4260)K, y (4260) →j /ψπ+π- decays",
abstract = "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.",
keywords = "MONTE-CARLO, PHOTOS, STATE, TOOL",
author = "{The BELLE collaboration} and R. Garg and V. Bhardwaj and Singh, {J. B.} and I. Adachi and Ahn, {J. K.} and H. Aihara and {Al Said}, S. and Asner, {D. M.} and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and S. Bahinipati and V. Bansal and C. Bele{\~n}o and T. Bilka and J. Biswal and A. Bobrov and A. Bozek and M. Bra{\v c}ko and L. Cao and D. {\v C}ervenkov and A. Chen and Cheon, {B. G.} and K. Chilikin and Cho, {H. E.} and K. Cho and Choi, {S. K.} and Y. Choi and D. Cinabro and S. Cunliffe and N. Dash and {Di Carlo}, S. and Z. Dole{\v Z}al and Dong, {T. V.} and Z. Dr{\'a}sal and S. Eidelman and Fast, {J. E.} and Fulsom, {B. G.} and V. Gaur and N. Gabyshev and A. Garmash and A. Giri and B. Golob and O. Grzymkowska and J. Haba and D. Matvienko and Y. Usov and V. Zhilich and V. Zhulanov and Кроковный, {Павел Петрович} and Шебалин, {Василий Евгеньевич}",
year = "2019",
month = apr,
day = "12",
doi = "10.1103/PhysRevD.99.071102",
language = "English",
volume = "99",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "AMER PHYSICAL SOC",
number = "7",
}