Study of the D<SUP>0</SUP>p amplitude in Λ<sub>b</sub><SUP>0</SUP> → D<SUP>0</SUP>pπ<SUP>-</SUP> decays



Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 758 more authors) (2017) Study of the D<SUP>0</SUP>p amplitude in Λ<sub>b</sub><SUP>0</SUP> → D<SUP>0</SUP>pπ<SUP>-</SUP> decays. JOURNAL OF HIGH ENERGY PHYSICS, 2017 (5). 30-.

[img] Text
1701.07873v3.pdf - Author Accepted Manuscript

Download (2MB)

Abstract

An amplitude analysis of the decay $\Lambda_b^0\to D^0 p \pi^-$ is performed in the part of the phase space containing resonances in the $D^0 p$ channel. The study is based on a data sample corresponding to an integrated luminosity of 3.0 fb$^{-1}$ of $pp$ collisions recorded by the LHCb experiment. The spectrum of excited $\Lambda_c^+$ states that decay into $D^0 p$ is studied. The masses, widths and quantum numbers of the $\Lambda_c(2880)^+$ and $\Lambda_c(2940)^+$ resonances are measured. The constraints on the spin and parity for the $\Lambda_c(2940)^+$ state are obtained for the first time. A near-threshold enhancement in the $D^0 p$ amplitude is investigated and found to be consistent with a new resonance, denoted the $\Lambda_c(2860)^+$, of spin $3/2$ and positive parity.

Item Type: Article
Additional Information: Replaced with version published in JHEP. All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-061.html
Uncontrolled Keywords: B physics, Charm physics, Hadron-Hadron scattering (experiments), QCD, Spectroscopy
Depositing User: Symplectic Admin
Date Deposited: 11 Sep 2017 13:20
Last Modified: 14 Mar 2024 23:41
DOI: 10.1007/JHEP05(2017)030
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3009392