Search for the X(4140) state in B+→J/ψϕK+ decays with the D0 detector

Abazov, V.M. and Abbott, B. and Acharya, B.S. and Adams, M. and Adams, T. and Agnew, J.P. and Alexeev, G.D. and Alkhazov, G. and Alton, A. and Askew, A. and Atkins, S. and Augsten, K. and Avila, C. and Badaud, F. and Bagby, L. and Baldin, B. and Bandurin, D.V. and Banerjee, S. and Barberis, E. and Baringer, P. and Bartlett, J.F. and Bassler, U. and Bazterra, V. and Bean, A. and Begalli, M. and Bellantoni, L. and Beri, S.B. and Bernardi, G. and Bernhard, R. and Bertram, I. and Besanifmmode çelse çon, M. and Beuselinck, R. and Bhat, P.C. and Bhatia, S. and Bhatnagar, V. and Blazey, G. and Blessing, S. and Bloom, K. and Boehnlein, A. and Boline, D. and Boos, E.E. and Borissov, G. and Brandt, A. and Brandt, O. and Brock, R. and Fox, H. and Price, D. and Ratoff, P.N. and Ross, A. and Williams, M.R.J. (2014) Search for the X(4140) state in B+→J/ψϕK+ decays with the D0 detector. Physical Review D, 89 (1). ISSN 1550-7998

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We investigate the decay B+→J/ψϕK+ in a search for the X(4140) state, a narrow threshold resonance in the J/ψϕ system. The data sample corresponds to an integrated luminosity of 10.4  fb−1 of pp¯ collisions at s√=1.96  TeV collected by the D0 experiment at the Fermilab Tevatron collider. We observe a mass peak with a statistical significance of 3.1 standard deviations and measure its invariant mass to be M=4159.0±4.3(stat)±6.6(syst)  MeV and its width to be Γ=19.9±12.6(stat)+3.0−8.0(syst)  MeV.

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Journal Article
Journal or Publication Title:
Physical Review D
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© 2014 American Physical Society
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24 Jan 2014 05:55
Last Modified:
26 Sep 2020 02:56