Title
Evidence for a narrow near-threshold structure in the J/ψ mass spectrum in B+→J/ψ K+ decays
Date Issued
15 June 2009
Access level
open access
Resource Type
journal article
Author(s)
Aaltonen T.
Adelman J.
Akimoto T.
Álvarez González B.
Amerio S.
Amidei D.
Anastassov A.
Annovi A.
Antos J.
Apollinari G.
Apresyan A.
Arisawa T.
Artikov A.
Ashmanskas W.
Attal A.
Aurisano A.
Azfar F.
Badgett W.
Barbaro-Galtieri A.
Barnes V.E.
Barnett B.A.
Barria P.
Bartsch V.
Bauer G.
Beauchemin P.H.
Bedeschi F.
Beecher D.
Behari S.
Bellettini G.
Bellinger J.
Benjamin D.
Beretvas A.
Beringer J.
Bhatti A.
Binkley M.
Bisello D.
Bizjak I.
Blair R.E.
Blocker C.
Blumenfeld B.
Bocci A.
Bodek A.
Boisvert V.
Bolla G.
Bortoletto D.
Boudreau J.
Boveia A.
Brau B.
Bridgeman A.
Brigliadori L.
Bromberg C.
Brubaker E.
Budagov J.
Budd H.S.
Budd S.
Burke S.
Burkett K.
Busetto G.
Bussey P.
Buzatu A.
Byrum K.L.
Cabrera S.
Calancha C.
Campanelli M.
Campbell M.
Canelli F.
Canepa A.
Carls B.
Carlsmith D.
Carosi R.
Carrillo S.
Carron S.
Casal B.
Casarsa M.
Castro A.
Catastini P.
Cauz D.
Cavaliere V.
Cavalli-Sforza M.
Cerri A.
Cerrito L.
Chang S.H.
Chen Y.C.
Chertok M.
Chiarelli G.
Chlachidze G.
Chlebana F.
Cho K.
Chokheli D.
Chou J.P.
Choudalakis G.
Chuang S.H.
Chung K.
Chung W.H.
Chung Y.S.
Chwalek T.
Ciobanu C.I.
Ciocci M.A.
Clark A.
Clark D.
Abstract
Evidence is reported for a narrow structure near the J/ψ threshold in exclusive B+→J/ψ K+ decays produced in p̄p collisions at s=1.96TeV. A signal of 14±5 events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of 2.7fb-1, collected by the CDF II detector. The mass and natural width of the structure are measured to be 4143.0±2.9(stat) ±1.2(syst)MeV/c2 and 11.7-5.0+8.3(stat)±3.7(syst)MeV/c2. © 2009 The American Physical Society.
Volume
102
Issue
24
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-67249111479
Source
Physical Review Letters
ISSN of the container
10797114
Sponsor(s)
Science and Technology Facilities Council - PP/E000444/1, PP/E000452/1, ST/H001069/1, ST/H001077/1 - STFC
Sources of information:
Directorio de Producción Científica
Scopus