Inclusive production of the X(4140) state in pp¯ collisions at D0

UNSPECIFIED (2015) Inclusive production of the X(4140) state in pp¯ collisions at D0. Physical review letters, 115: 232001. ISSN 1079-7114

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We present a study of the inclusive production of the X(4140) state with the decay to the J/ψϕ final state in hadronic collisions. Based on 10.4  fb−1 of pp¯ collision data collected by the D0 experiment at the Fermilab Tevatron collider, we report the first evidence for the prompt production of an X(4140) state and find the fraction of X(4140) events originating from b hadrons to be fb=0.39±0.07(stat)±0.10(syst). The ratio of the nonprompt X(4140) production rate to the B0s yield in the same channel is R=0.19±0.05(stat)±0.07(syst). The values of the mass M=4152.5±1.7(stat)+6.2−5.4(syst)  MeV and width Γ=16.3±5.6(stat)±11.4(syst)  MeV are consistent with previous measurements.

Item Type:
Journal Article
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Physical review letters
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?? physics and astronomy(all) ??
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Deposited On:
06 Jan 2016 14:14
Last Modified:
23 Jan 2024 01:53