Evidence for exotic hadron contributions to lambda(0)(b) -> j/psi p pi(-) decays
文献类型：期刊论文
| Author | Aaij, 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 |
| Source | Physical review letters
 |
| Issued Date | 2016-08-18 |
| Volume | 117Issue:8Pages:10 |
| ISSN | 0031-9007 |
| DOI | 10.1103/physrevlett.117.082003 |
| Corresponding Author | Aaij, r.() |
| English Abstract | A 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 Keyword | PARTIAL-WAVE ANALYSIS ; BARYON RESONANCES ; QUARK-MODEL ; STATES |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| Language | 英语 |
| Publisher | AMER PHYSICAL SOC |
| WOS ID | WOS:000381608500004 |