Baringer, Philip S.Bean, AliceWilson, Graham WallaceD0 Collaboration2016-11-212016-11-212015-12-02Abazov, V. M., Abbott, B., Acharya, B. S., Adams, M., Adams, T., Agnew, J. P., ... & Atkins, S. (2015). Inclusive Production of the X (4140) State in p p¯ Collisions at D0. Physical review letters, 115(23), 232001.https://hdl.handle.net/1808/22041We 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.© 2015 American Physical SocietyArticle10.1103/PhysRevLett.115.232001openAccess