A study of B-c(+) -> J/psi D-s(+) and B-c(+)-> J/psi D-s*(+) decays using 139 fb(-1) of in- tegrated luminosity collected with the ATLAS detector from root s = 13 TeV pp collisions at the LHC is presented. The ratios of the branching fractions of the two decays to the branching fraction of the B-c(+) -> J/psi pi(+) decay are measured: B(B-c(+) -> J/psi D-s(+))/B(B-c(+) -> J/psi pi(+)) = 2.76 +/- 0.47 and B(B-c(+)-> J/psi D-s*(+))/B(B-c(+) -> J/psi pi(+)) = 5.33 +/- 0.96. The ratio of the branching fractions of the two decays is found to be B(B-c(+)-> J/psi D-s*(+))/B(B-c(+) -> J/psi D-s(+)) = 1.93 +/- 0.26. For the B-c(+)-> J/psi D-s*(+) decay, the transverse polarization fraction, Gamma(+/-+/-)/Gamma, is measured to be 0.70 +/- 0.11. The reported uncertainties include both the statistical and systematic components added in quadrature. The precision of the measurements exceeds that in all previous studies of these decays. These results supersede those obtained in the earlier ATLAS study of the same decays with root s = 7 and 8 TeV pp collision data. A comparison with available theoretical predictions for the measured quantities is presented.

Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D., et al. (2022). Study of B-c(+) -> J/psi D-s(+) and B-c(+)-> J/psi D-s*(+) decays in pp collisions at root s=13 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS(8) [10.1007/JHEP08(2022)087].

Study of B-c(+) -> J/psi D-s(+) and B-c(+)-> J/psi D-s*(+) decays in pp collisions at root s=13 TeV with the ATLAS detector

Aielli, G;Camarri, P;Cerrito, L;De Sanctis, U;Di Ciaccio, A;
2022-01-01

Abstract

A study of B-c(+) -> J/psi D-s(+) and B-c(+)-> J/psi D-s*(+) decays using 139 fb(-1) of in- tegrated luminosity collected with the ATLAS detector from root s = 13 TeV pp collisions at the LHC is presented. The ratios of the branching fractions of the two decays to the branching fraction of the B-c(+) -> J/psi pi(+) decay are measured: B(B-c(+) -> J/psi D-s(+))/B(B-c(+) -> J/psi pi(+)) = 2.76 +/- 0.47 and B(B-c(+)-> J/psi D-s*(+))/B(B-c(+) -> J/psi pi(+)) = 5.33 +/- 0.96. The ratio of the branching fractions of the two decays is found to be B(B-c(+)-> J/psi D-s*(+))/B(B-c(+) -> J/psi D-s(+)) = 1.93 +/- 0.26. For the B-c(+)-> J/psi D-s*(+) decay, the transverse polarization fraction, Gamma(+/-+/-)/Gamma, is measured to be 0.70 +/- 0.11. The reported uncertainties include both the statistical and systematic components added in quadrature. The precision of the measurements exceeds that in all previous studies of these decays. These results supersede those obtained in the earlier ATLAS study of the same decays with root s = 7 and 8 TeV pp collision data. A comparison with available theoretical predictions for the measured quantities is presented.
2022
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - FISICA SPERIMENTALE
English
B Physics
Hadron-Hadron Scattering
Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D., et al. (2022). Study of B-c(+) -> J/psi D-s(+) and B-c(+)-> J/psi D-s*(+) decays in pp collisions at root s=13 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS(8) [10.1007/JHEP08(2022)087].
Aad, G; Abbott, B; Abbott, D; Abud, A; Abeling, K; Abhayasinghe, D; Abidi, S; Aboulhorma, A; Abramowicz, H; Abreu, H; Abulaiti, Y; Hoffman, A; Acharya...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/305155
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