Observation of a vector charmoniumlike state in e(+)e(-) -> D-s(+) D-s1 (2536)(-) + c.c.

Jia, S.Shen, C. P.Yuan, C. Z.Wang, X. L.Adachi, IAihara, H.Asner, D. M.Atmacan, H.Aulchenko, VAyad, R.Babu, VBadhrees, IBakich, A. M.Behera, P.Bhuyan, B.Bilka, T.Biswal, J.Bobrov, A.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Campajola, M.Cao, L.Cervenkov, D.Chang, P.Chen, A.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Choi, S-KChoi, Y.Cinabro, D.Cunliffe, S.De Nardo, G.Di Capua, F.Di Carlo, S.Dolezal, Z.Dong, T. V.Eidelman, S.Epifanov, D.Fast, J. E.Ferber, T.Fulsom, B. G.Garg, R.Gaur, VGabyshev, N.Garmash, A.Giri, A.Goldenzweig, P.Golob, B.Hayasaka, K.Hayashii, H.Hou, W-SHsu, C-LIijima, T.Inami, K.Inguglia, G.Ishikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jin, Y.Joo, K. K.Kang, K. H.Karyan, G.Kichimi, H.Kim, B. H.Kim, C. H.Kim, D. Y.Kim, S. H.Kinoshita, K.Kodys, P.Korpar, S.Kroeger, R.Krokovny, P.Kulasiri, R.Kuzmin, A.Kwon, Y-JLalwani, K.Lange, J. S.Lee, I. S.Lee, S. C.Lewis, P.Li, C. H.Li, L. K.Li, Y. B.Li Gioi, L.Libby, J.Lieret, K.Liventsev, D.MacQueen, C.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Miyabayashi, K.Miyata, H.Mizuk, R.Mussa, R.Nath, K. J.Nayak, M.Niiyama, M.Nisar, N. K.Nishida, S.Nishimura, K.Ogawa, S.Ono, H.Onuki, Y.Oskin, P.Pakhlov, P.Pakhlova, G.Pang, T.Pardi, S.Park, H.Park, S-HPatra, S.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Popov, VPrencipe, E.Prim, M. T.Roehrken, M.Rostomyan, A.Rout, N.Russo, G.Sahoo, D.Sakai, Y.Sandilya, S.Santelj, L.Savinov, VSchneider, O.Schnell, G.Schwanda, C.Seino, Y.Senyo, K.Sevior, M. E.Shiu, J-GShwartz, B.Sokolov, A.Solovieva, E.Stanic, S.Staric, M.Stottler, Z. S.Sumiyoshi, T.Sutcliffe, W.Takizawa, M.Tanida, K.Tenchini, F.Trabelsi, K.Uchida, M.Uglov, T.Unno, Y.Uno, S.Usov, Y.Van Tonder, R.Varner, G.Vinokurova, A.Vorobyev, V.Wang, C. H.Wang, M-ZWatanabe, M.Won, E.Yang, S. B.Ye, H.Yin, J. H.Zhang, Z. P.Zhilich, VZhukova, VZhulanov, V2020-01-112020-01-112020-01-112019-12-3110.1103/PhysRevD.100.111103https://infoscience.epfl.ch/handle/20.500.14299/164521WOS:000504983400001Using a data sample of 921.9 fb(-1) collected with the Belle detector, we study the process of e(+)e(-)-> Ds+Ds1(2536)(-) + c.c. via initial-state radiation. We report the first observation of a vector charmoniumlike state decaying to Ds+Ds1(2536)(-) + c.c. with a significance of 5.9 sigma, including systematic uncertainties. The measured mass and width are (4625.9(-6.0)(+6.2)(stat)+/- 0.4(syst))MeV/c(2) and (49.8(-11.5)(+13.9)(stat) +/- 4.0(syst)) MeV, respectively. The product of the e(+)e(-)-> Ds+Ds1(2536)(-) + c.c. cross section and the branching fraction of D-s1 (2536)(-) ->( D) over bar *0K(-) is measured from the D-s(D) over bar (s1) (2536) threshold to 5.59 GeV.Astronomy & AstrophysicsPhysics, Particles & FieldsAstronomy & AstrophysicsPhysicsbelleObservation of a vector charmoniumlike state in e(+)e(-) -> D-s(+) D-s1 (2536)(-) + c.c.text::journal::journal article::research article