Search for the X(5568) state decaying into B0sπ± in proton-proton collisions at√s = 8TeV

CMS Collaboration, Shimaa Abu Zeid, Freya Blekman, Jorgen D'Hondt, Isabelle Helena De Bruyn, Kevin Deroover, Steven Lowette, Seth Moortgat, Lieselotte Moreels, Quentin Python, Kirill Skovpen, Stefaan Tavernier, Walter Van Doninck, Petra Van Mulders, Isis Marina Van Parijs, Jarne De Clercq, Denys Lontkovskyi, Giannis Flouris, Ivan Marchesini

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)


A search for resonance-like structures in the B0 sπ± invariant mass spectrum is performed using proton-proton collision data collected by the CMS experiment at the LHC at √s = 8TeV, corresponding to an integrated luminosity of 19.7fb−1. The B0 s mesons are reconstructed in the decay chain B0 s → J/ψφ, with J/ψ → µ+µ− and φ → K+K−. The B0 sπ± invariant mass distribution shows no statistically significant peaks for different selection requirements on the reconstructed B0 s and π± candidates. Upper limits are set on the relative production rates of the X(5568) and B0 s states times the branching fraction of the decay X(5568)± → B0 sπ±. In addition, upper limits are obtained as a function of the mass and the natural width of possible exotic states decaying into B0 sπ±.

Original languageEnglish
Article number202005
Number of pages17
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 18 May 2018


Dive into the research topics of 'Search for the X(5568) state decaying into B0sπ± in proton-proton collisions at√s = 8TeV'. Together they form a unique fingerprint.

Cite this