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Measurement of the ?b polarization and angular parameters in ?b?J/?? decays from pp collisions at ?s=7 and 8 TeV

Abstract: An analysis of the bottom baryon decay ?b?J/?(??+?-)?(?p?-) is performed to measure the ?b polarization and three angular parameters in data from pp collisions at s=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The ?b polarization is measured to be 0.00±0.06(stat)±0.06(syst) and the parity-violating asymmetry parameter is determined to be 0.14±0.14(stat)±0.10(syst). The measurements are compared to various theoretical predictions, including those from perturbative quantum chromodynamics.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Phys. Rev. D, Vol. 97, Num. 07, Pag. 074006 (2018)

Editorial: American Physical Society

 Fecha de publicación: 17/04/2018

Nº de páginas: 20

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.97.072010

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Url de la publicación: https://doi.org/10.1103/PhysRevD.97.072010