Angular analysis of the decay B0 to K*0 mu mu from pp collisions at sqrt(s) = 8 TeV

BELFORTE, S.; CANDELISE, VIERI; CASARSA, M.; COSSUTTI, F.; DELLA RICCA, GIUSEPPE; GOBBO, B.; LA LICATA, CHIARA; MARONE, MATTEO; SCHIZZI, ANDREA; UMER, TOMO; ZANETTI, A.

doi:10.1016/j.physletb.2015.12.020

The angular distributions and the differential branching fraction of the decay B0→K⁎(892)0μ+μ−B0→K⁎(892)0μ+μ− are studied using data corresponding to an integrated luminosity of 20.5 fb−1 collected with the CMS detector at the LHC in pp collisions at View the MathML sources=8 TeV. From 1430 signal decays, the forward–backward asymmetry of the muons, the K⁎(892)0K⁎(892)0 longitudinal polarization fraction, and the differential branching fraction are determined as a function of the dimuon invariant mass squared. The measurements are among the most precise to date and are in good agreement with standard model predictions.

Titolo:	Angular analysis of the decay B0 to K*0 mu mu from pp collisions at sqrt(s) = 8 TeV
Autori:	BELFORTE S. CANDELISE, VIERI CASARSA M. COSSUTTI F. DELLA RICCA, GIUSEPPE GOBBO B. LA LICATA, CHIARA MARONE, MATTEO SCHIZZI, ANDREA UMER, TOMO ZANETTI A. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2016
Rivista:	PHYSICS LETTERS. SECTION B
Abstract:	The angular distributions and the differential branching fraction of the decay B0→K⁎(892)0μ+μ−B0→K⁎(892)0μ+μ− are studied using data corresponding to an integrated luminosity of 20.5 fb−1 collected with the CMS detector at the LHC in pp collisions at View the MathML sources=8 TeV. From 1430 signal decays, the forward–backward asymmetry of the muons, the K⁎(892)0K⁎(892)0 longitudinal polarization fraction, and the differential branching fraction are determined as a function of the dimuon invariant mass squared. The measurements are among the most precise to date and are in good agreement with standard model predictions.
Handle:	http://hdl.handle.net/11368/2864209
Digital Object Identifier (DOI):	10.1016/j.physletb.2015.12.020
URL:	http://www.sciencedirect.com/science/article/pii/S0370269315009685
Appare nelle tipologie:	1.1 Articolo in Rivista

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