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Observation of the J/ps -->m+m-m+m- decay in proton-proton collisions at Vs= 13 Te V

Abstract: The J/ps -->m+m-m+m- decay has been observed with a statistical significance in excess of five standard deviations. The analysis is based on an event sample of proton-proton collisions at a center-ofmass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of 33.6 fb-1. Normalizing to theJ/ps -->m+m- decay mode leads to a branching fraction of ½10.1þ3.3 -2.7 (stat) +-0.4 (syst)] x 10-7, a value that is consistent with the standard model prediction.

Autoría: Hayrapetyan A., Tumasyan A., Adam W., Andrejkovic J.W., Bergauer T., Chatterjee S., Damanakis K., Dragicevic M., Hussain P.S., Jeitler M., Krammer N., Li A., Liko D., Mikulec I., Schieck J., Schöfbeck R., Schwarz D., Sonawane M., Templ S., Waltenberger W., Wulz C.E., Darwish M.R., Janssen T., Van Mechelen P., Breugelmans N., D’Hondt J., Dansana S., De Moor A., Delcourt M., Heyen F., Lowette S., Makarenko I., Müller D., Tavernier S

Fuente: Physical Review D, 2024, 109(11), L111101

Editorial: American Physical Society

Fecha de publicación: 06/06/2024

Nº de páginas: 17

Tipo de publicación: Artículo de Revista

DOI: 10.1103/PhysRevD.109.L111101

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

Url de la publicación: https://doi.org/10.1103/PhysRevD.109.L111101

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