Evidence for a New Structure in the <i>J/</i>ψ<i>p</i> and <i>J/</i>ψ(<i>p</i>)over-bar Systems in <i>B<sub>s</sub></i><SUP>0</SUP> → <i>J/</i>ψ<i>p</i>(<i>p</i>)over-bar Decays

Aaij, R, ABdelmotteleb, ASW, Beteta, C Abellan, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z
et al (show 988 more authors) (2022) Evidence for a New Structure in the <i>J/</i>ψ<i>p</i> and <i>J/</i>ψ(<i>p</i>)over-bar Systems in <i>B<sub>s</sub></i><SUP>0</SUP> → <i>J/</i>ψ<i>p</i>(<i>p</i>)over-bar Decays. PHYSICAL REVIEW LETTERS, 128 (6). 062001-.

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An amplitude analysis of flavor-untagged B_{s}^{0}→J/ψpp[over ¯] decays is performed using a sample of 797±31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9  fb^{-1}. Evidence for a new structure in the J/ψp and J/ψp[over ¯] systems with a mass of 4337_{-4}^{+7} _{-2}^{+2}  MeV and a width of 29_{-12}^{+26} _{-14}^{+14}  MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.1 to 3.7σ, depending on the assigned J^{P} hypothesis.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-018.html (LHCb public pages)
Uncontrolled Keywords: LHCb Collaboration
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 01 Sep 2021 08:43
Last Modified: 12 Oct 2023 18:54
DOI: 10.1103/PhysRevLett.128.062001
Open Access URL: https://journals.aps.org/prl/abstract/10.1103/Phys...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3134950