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Measurement of the relative prompt production rate of ?c2 and ?c1 in pp collisions at vs = 7 TeV

Abstract: A measurement is presented of the relative prompt production rate of ? c2 and ? c1 with 4.6 fb?1 of data collected by the CMS experiment at the LHC in pp collisions at s?=7 TeVs=7 TeV. The two states are measured via their radiative decays ? c?J/?+?, with the photon converting into an e+e? pair for J/? rapidity |y(J/?)|<1.0 and photon transverse momentum p T(?)>0.5 GeV/c. The measurement is given for six intervals of p T(J/?) between 7 and 25 GeV/c. The results are compared to theoretical predictions.

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Authorship: Chatrchyan S., Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., Aguilo E., Bergauer T., Dragicevic M., Erö J., Fabjan C., Friedl M., Frühwirth R., Ghete V.M., Hammer J., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knünz V., Krammer M., Krätschmer I., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V

Fuente: European Physical Journal C, 2012, 72, 2251

Publisher: Springer New York LLC

Year of publication: 2012

No. of pages: 22

Publication type: Artículo de Revista

DOI: 10.1140/epjc/s10052-012-2251-3

ISSN: 1434-6044,1434-6052

Publication Url: https://doi.org/10.1140/epjc/s10052-012-2251-3

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