Search for the $X(4140)$ state in $B^+ to J/psi phi K^+$ decays

The LHCb Collaboration, Matthew Needham, Franz Muheim, Peter Clarke, Yuehong Xie, Stephan Eisenhardt

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

A search for the X(4140) state in B+ to J/psi phi K+ decays is performed with 0.37 fb-1 of pp collisions at sqrt(s)=7 TeV collected by the LHCb experiment. No evidence for this state is found, in 2.4 sigma disagreement with a measurement by CDF. An upper limit on its production rate is set, BR(B+ to X(4140) K+) BR(X(4140) to J/psi phi) / BR(B+ to J/psi phi K+) < 0.07 at 90% confidence level.
Original languageEnglish
Pages (from-to)091103
Number of pages1
JournalPhysical Review D, particles, fields, gravitation, and cosmology
Early online date23 Feb 2012
Publication statusPublished - 4 May 2012


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