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Measurements of the angular distributions of muons from Y decays in pp¯ collisions vs = 1.96 TeV

Abstract: The angular distributions of muons from ð1S; 2S; 3SÞ ! þ decays are measured using data from pp collisions at ffiffis p ¼ 1:96 TeV corresponding to an integrated luminosity of 6:7 fb1 and collected with the CDF II detector at the Fermilab Tevatron. This analysis is the first to report the full angular distributions as functions of transverse momentum pT for  mesons in both the Collins-Soper and s-channel helicity frames. This is also the first measurement of the spin alignment of ð3SÞ mesons. Within the kinematic range of  rapidity jyj < 0:6 and pT up to 40 GeV=c, the angular distributions are found to be nearly isotropic.

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

 Autoría: Aaltonen T., Álvarez González B., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Bae T., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bedeschi F., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Bisello D., Bizjak I., Bland K.R., Bl

 Fuente: Physical Review Letters (2012) Volume 108, Issue 15, article number 151802

Editorial: American Physical Society

 Fecha de publicación: 01/04/2012

Nº de páginas: 8

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.108.151802

ISSN: 0031-9007,1079-7114

Url de la publicación: https://doi.org/10.1103/PhysRevLett.108.151802

Autores/as

AALTONEN, T.

BARBARA ALVAREZ GONZALEZ

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON