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

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

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[supe...

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Bibliographic Details
Main Authors: Apyan, Aram, Barbieri, Richard Alexander, Bierwagen, Katharina, Busza, Wit, Cali, Ivan Amos, Di Matteo, Leonardo, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Gulhan, Doga Can, Klute, Markus, Lai, Yue Shi, Lee, Yen-Jie, Levin, Andrew Michael, Luckey Jr, P David, Paus, Christoph M. E., Ralph, Duncan Kelley, Roland, Christof E, Roland, Gunther M, Stephans, George S. F., Sumorok, Konstanty C, Velicanu, Dragos Alexandru, Veverka, Jan, Wyslouch, Boleslaw, Yang, Mingming, Zanetti, Marco
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Published: Elsevier BV 2018
Online Access:http://hdl.handle.net/1721.1/116722
https://orcid.org/0000-0002-9418-6656
https://orcid.org/0000-0002-7945-005X
https://orcid.org/0000-0002-2622-8295
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0002-2822-3375
https://orcid.org/0000-0001-9236-6621
https://orcid.org/0000-0002-0869-5631
https://orcid.org/0000-0003-1486-606X
https://orcid.org/0000-0003-2593-7767
https://orcid.org/0000-0002-1136-6900
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0002-1260-777X
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0001-6332-5839
Description
Summary: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.

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