@article{6ebb4307669c4c918850f86ef57b0b0e,

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.",

author = "{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 K. Hayasaka and H. Hayashii and Hou, {W. S.} and M. Nayak",

note = "Publisher Copyright: {\textcopyright} 2019 authors.",

year = "2019",

month = apr,

day = "1",

doi = "10.1103/PhysRevD.99.071102",

language = "אנגלית",

volume = "99",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "7",

}