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 Detalle_Publicacion

Observation of a new ? b baryon

Abstract: The observation of a new b baryon via its strong decay into ??b?+ (plus charge conjugates) is reported. The measurement uses a data sample of pp collisions at ?s=7??TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3??fb?1. The known ??b baryon is reconstructed via the decay chain ??b?J/?????+???0??, with ?0?p??. A peak is observed in the distribution of the difference between the mass of the ??b?+ system and the sum of the masses of the ??b and ?+, with a significance exceeding 5 standard deviations. The mass difference of the peak is 14.84±0.74(stat)±0.28(syst)??MeV. The new state most likely corresponds to the JP=3/2+ companion of the ?b. .

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

 Autoría: Chatrchyan S., Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., 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., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Wagner P., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V., Shumeiko N.,

 Fuente: Physical Review Letters 108, 252002 (2012)

Editorial: American Physical Society

 Año de publicación: 2012

Nº de páginas: 15

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.108.252002

ISSN: 0031-9007,1079-7114

Url de la publicación: https://doi.org/10.1103/PhysRevLett.108.252002

Autores/as

SHANHUEI CHUANG

MARTA FELCINI

CLARA JORDA LOPE

PATRICIA LOBELLE PARDO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO

MARIA DEL MAR SOBRON SAÑUDO