Title:
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Quantum numbers of the X(3872) state and orbital angular momentum in its ρ0J/ψ decay
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Author:
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Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN
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Other authors:
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Universitat Ramon Llull. La Salle; CERN |
Abstract:
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Angular correlations in B+→X(3872)K+ decays, with X(3872)→ρ0J/ψ, ρ0→π+π− and J/ψ→μ+μ−, are used to measure orbital angular momentum contributions and to determine the JPC value of the X(3872) meson. The data correspond to an integrated luminosity of 3.0 fb−1 of proton-proton collisions collected with the LHCb detector. This determination, for the first time performed without assuming a value for the orbital angular momentum, confirms the quantum numbers to be JPC=1++. The X(3872) is found to decay predominantly through an S wave and an upper limit of 4% at 95% C.L. is set on the D-wave contribution. |
Publication date:
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2015-07-30 |
Subject (UDC):
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539 - Constitució física de la matèria |
Subject(s):
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Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) |
Rights:
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L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by/4.0/
© CERN |
Pages:
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9 p. |
Document type:
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Article Article - Published version |
DOI:
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https://doi.org/10.1103/PhysRevD.92.011102
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Published by:
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American Physical Society
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Publish at:
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Physical Review D, 2015, Vol.92, No.1 (Juliol)
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