Measurement of the ratio B(B[0, s] to J/psi f0(980)) / B(B[0, s] to J/psi phi(1020)) in pp collisions at sqrt(s) = 7 TeV (CROSBI ID 239113)
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Khachatryan, Vardan ; ... ; Morović, Srećko ; Ferenček, Dinko ; Đurić, Senka ; Godinović, Nikola ; Lelas, Damir ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Kadija, Krešo ; Luetić, Jelena ; Mekterović, Darko ; Sudić, Lucija ; ... ; Woods, Nate
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Measurement of the ratio B(B[0, s] to J/psi f0(980)) / B(B[0, s] to J/psi phi(1020)) in pp collisions at sqrt(s) = 7 TeV
A measurement of the ratio of the branching fractions of the B[0, s] meson to J/psi f0(980) and to J/psi phi(1020) is presented. The J/psi, f0(980), and phi(1020) are observed through their decays to mu+ mu-, pi+ pi-, and K+ K-, respectively. The f0 is identified by requiring abs( M[pi+, pi-] - 974 MeV ) < 50 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, corresponding to an integrated luminosity of 5.3 inverse femtobarns. The measured ratio is B(B[0, s] to J/psi f0(980)) B(f0 to pi+ pi-) / B(B[0, s] to J/psi phi(1020)) B(phi(1020) to K+ K-) = 0.140 +/- 0.008 +/- 0.023, where the first uncertainty is statistical and the second is systematic.
High energy physics, Experimental particle physics, LHC, CMS, Standard Model
CMS Collaboration.
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