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Title: Evidence of a structure in K�0?c+ consistent with a charged ? c(2930) + , and updated measurement of B�0?K�0?c+?�c- at Belle: Belle Collaboration
Authors: Li Y.B.
Shen C.P.
Adachi I.
Aihara H.
Al Said S.
Asner D.M.
Aushev T.
Ayad R.
Babu V.
Badhrees I.
Bahinipati S.
Ban Y.
Bansal V.
Behera P.
Bele�o C.
Bhardwaj V.
Bhuyan B.
Biswal J.
Bobrov A.
Bozek A.
Bra?ko M.
Browder T.E.
Cao L.
?ervenkov D.
Chang P.
Chekelian V.
Chen A.
Cheon B.G.
Chilikin K.
Cho K.
Choi S.-K.
Choi Y.
Choudhury S.
Cinabro D.
Cunliffe S.
Dash N.
Di Carlo S.
Dingfelder J.
Dole�al Z.
Dong T.V.
Dr�sal Z.
Eidelman S.
Epifanov D.
Fast J.E.
Fulsom B.G.
Garg R.
Gaur V.
Gabyshev N.
Garmash A.
Gelb M.
Giri A.
Goldenzweig P.
Golob B.
Haba J.
Hayasaka K.
Hirose S.
Hou W.-S.
Iijima T.
Inami K.
Inguglia G.
Ishikawa A.
Itoh R.
Iwasaki M.
Iwasaki Y.
Jacobs W.W.
Jaegle I.
Jeon H.B.
Jia S.
Jin Y.
Joo K.K.
Kaliyar A.B.
Kang K.H.
Kato Y.
Kawasaki T.
Kim D.Y.
Kim J.B.
Kim S.H.
Kinoshita K.
Kody� P.
Korpar S.
Kotchetkov D.
Kri�an P.
Kroeger R.
Krokovny P.
Kuhr T.
Kwon Y.-J.
Lange J.S.
Lee I.S.
Lee S.C.
Li L.K.
Li Gioi L.
Libby J.
Liventsev D.
Luo T.
Matvienko D.
Merola M.
Miyata H.
Mizuk R.
Moon H.K.
Mori T.
Mussa R.
Nakano E.
Nanut T.
Nath K.J.
Natkaniec Z.
Nayak M.
Nisar N.K.
Nishida S.
Nishimura K.
Ogawa K.
Okuno S.
Ono H.
Pakhlov P.
Pakhlova G.
Pal B.
Pardi S.
Park H.
Paul S.
Pedlar T.K.
Pestotnik R.
Piilonen L.E.
Popov V.
Prencipe E.
Rostomyan A.
Russo G.
Sakai Y.
Salehi M.
Sandilya S.
Santelj L.
Sanuki T.
Savinov V.
Schneider O.
Schnell G.
Schwanda C.
Seino Y.
Senyo K.
Seon O.
Sevior M.E.
Shibata T.-A.
Shiu J.-G.
Solovieva E.
Stari? M.
Strube J.F.
Sumihama M.
Sumiyoshi T.
Takizawa M.
Tamponi U.
Tanida K.
Tenchini F.
Uchida M.
Uglov T.
Unno Y.
Uno S.
Usov Y.
Van Hulse C.
Van Tonder R.
Varner G.
Varvell K.E.
Vorobyev V.
Waheed E.
Wang B.
Wang C.H.
Wang M.-Z.
Wang P.
Wang X.L.
Watanuki S.
Widmann E.
Won E.
Ye H.
Yelton J.
Yin J.H.
Yuan C.Z.
Yusa Y.
Zhang Z.P.
Zhilich V.
Zhukova V.
Zhulanov V.
Issue Date: 2018
Citation: 3
Abstract: We report evidence for the charged charmed-strange baryon ? c(2930) + with a signal significance of 3.9? with systematic errors included. The charged ? c(2930) + is found in its decay to KS0?c+ in the substructure of B�0?KS0?c+?�c- decays. The measured mass and width are [2942.3 � 4.4 (stat.) � 1.5 (syst.)] MeV/c2 and [14.8 � 8.8 (stat.) � 2.5 (syst.)] MeV, respectively, and the product branching fraction is B(B�0??c(2930)+?�c-)B(?c(2930)+?K�0?c+)=[2.37�0.51(stat.)�0.31(syst.)]�10-4. We also measure B(B�0?K�0?c+?�c-)=[3.99�0.76(stat.)�0.51(syst.)]�10-4 with greater precision than previous experiments, and present the results of a search for the charmonium-like state Y(4660) and its spin partner, Y?, in the ?c+?�c- invariant mass spectrum. No clear signals of the Y(4660) or Y? are observed and the 90% credibility level (C.L.) upper limits on their production rates are determined. These measurements are obtained from a sample of (772 � 11) � 10 6BB� pairs collected at the ? (4 S) resonance by the Belle detector at the KEKB asymmetric energy electron-positron collider. � 2018, The Author(s).
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