中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Evidence for exotic hadron contributions to lambda(0)(b) -> j/psi p pi(-) decays

文献类型:期刊论文

AuthorAaij, R.40; Beteta, C. Abellan42; Adeva, B.39; Adinolfi, M.49; Ajaltouni, Z.5; Akar, S.6; Albrecht, J.10; Alessio, F.40; Alexander, M.; Ali, S.43
SourcePhysical review letters
Issued Date2016-08-18
Volume117Issue:8Pages:10
ISSN0031-9007
DOI10.1103/physrevlett.117.082003
Corresponding AuthorAaij, r.()
English AbstractA full amplitude analysis of lambda(0)(b) -> j/psi pi(-) decays is performed with a data sample acquired with the lhcb detector from 7 and 8 tev pp collisions, corresponding to an integrated luminosity of 3 fb(-1). a significantly better description of the data is achieved when, in addition to the previously observed nucleon excitations n -> p pi(-), either the p-c(43800)(+) and p-c(4450)(+) -> j/psi p states, previously observed in lambda(0)(b) -> j/psi pk(-) decays, or the z(c)(4200)(-) -> j/psi pi(-) state, previously reported in b-0 -> j/psi k+pi(-) decays, or all three, are included in the amplitude models. the data support a model containing all three exotic states, with a significance of more than three standard deviations. within uncertainties, the data are consistent with the p-c(4380)(+) and p-c(4 450)(+) production rates expected from their previous observation taking account of cabibbo suppression.
WOS KeywordPARTIAL-WAVE ANALYSIS ; BARYON RESONANCES ; QUARK-MODEL ; STATES
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Language英语
PublisherAMER PHYSICAL SOC
WOS IDWOS:000381608500004