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Inclusive Production of the X(4140) State in p(p)over-bar Collisions at D0
Joint Inst Nucl Res, Dubna, Russia..
Univ Oklahoma, Norman, OK 73019 USA..
Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India..
Univ Illinois, Chicago, IL 60607 USA..
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2015 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 115, no 23, 232001Article in journal (Refereed) Published
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Abstract [en]

We present a study of the inclusive production of the X(4140) state with the decay to the J/psi phi final state in hadronic collisions. Based on 10.4 fb(-1) of p (p) over bar 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 f(b) = 0.39 +/- 0.07 (stat) +/- 0.10 (syst). The ratio of the nonprompt X(4140) production rate to the B-s(0) 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)(-5.4)(+/- 6.2)(syst) MeV and width Gamma = 16.3 +/- 5.6 (stat) +/- 11.4 (syst) MeV are consistent with previous measurements.

Place, publisher, year, edition, pages
2015. Vol. 115, no 23, 232001
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-272073DOI: 10.1103/PhysRevLett.115.232001ISI: 000365881100005OAI: oai:DiVA.org:uu-272073DiVA: diva2:893894
Funder
Swedish Research Council
Available from: 2016-01-13 Created: 2016-01-11 Last updated: 2017-11-30Bibliographically approved

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