Measurement of the Ratio B ( B[subscript s][superscript 0] → J/ψf[subscript 0] (980))/B(B[subscript s][superscript 0] → J/ψϕ(1020)) in Pp Collisions at √s = 7 TeV

• Main Authors: Apyan, Aram (Contributor), Barbieri, Richard Alexander (Contributor), Bierwagen, Katharina (Contributor), Busza, Wit (Contributor), Cali, Ivan Amos (Contributor), Di Matteo, Leonardo (Contributor), Gomez-Ceballos, Guillelmo (Contributor), Goncharov, Maxim (Contributor), Gulhan, Doga Can (Contributor), Klute, Markus (Contributor), Lai, Yue Shi (Contributor), Lee, Yen-Jie (Contributor), Levin, Andrew Michael (Contributor), Luckey Jr, P David (Contributor), Paus, Christoph M. E. (Contributor), Ralph, Duncan Kelley (Contributor), Roland, Christof E (Contributor), Roland, Gunther M (Contributor), Stephans, George S. F. (Contributor), Sumorok, Konstanty C (Contributor), Velicanu, Dragos Alexandru (Contributor), Veverka, Jan (Contributor), Wyslouch, Boleslaw (Contributor), Yang, Mingming (Contributor), Zanetti, Marco (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: Elsevier BV, 2018-07-02T17:42:15Z.
• Subjects: Article
• Online Access: Get fulltext

 A measurement of the ratio of the branching fractions of the B[subscript s][superscript 0] meson to J/ψf0(980) and to J/ψφ(1020) is presented. The J/ψ, f[subscript 0](980), and φ(1020) are observed through their decays to μ[superscript +]μ[superscript -], π[superscript +]π[superscript -], and K[superscript +]K[superscript -], respectively. The f[subscript 0] and the φ are identified by requiring |M[subscript π[superscript +]π[subscript -]]-974 MeV|<50 MeV and |M[subscript K[superscript +]K[superscript -]]-1020 MeV|<10 MeV. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3 fb[superscript -1]. The measured ratio is B(B[subscript s][superscript 0]→J/ψf[subscript 0])B(f[subscript 0]→π[superscript +]π[superscript -])/B(B[subscript s][superscript 0]→J/ψφ)B(φ→K[superscript +]K[superscript -]) = 0.140±0.008(stat) ± 0.023(syst), where the first uncertainty is statistical and the second is systematic.