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Search for signatures of extra dimensions in the diphoton mass spectrum at the large hadron collider

Abstract: A search for signatures of extra spatial dimensions in the diphoton invariant-mass spectrum has been performed with the CMS detector at the LHC. No excess of events above the standard model expectation is observed using a data sample collected in proton-proton collisions at ffiffi s p ¼ 7 TeV corresponding to an integrated luminosity of 2:2 fb1. In the context of the large-extra-dimensions model, lower limits are set on the effective Planck scale in the range of 2.3?3.8 TeV at the 95% confidence level. These limits are the most restrictive bounds on virtual-graviton exchange to date. The most restrictive lower limits to date are also set on the mass of the first graviton excitation in the Randall-Sundrum model in the range of 0.86?1.84 TeV, for values of the associated coupling parameter between 0.01 and 0.10.

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., Hoch M., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knapitsch A., Krammer M., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Teischinger F., Trauner C., Wagner P., Waltenberger W., Walzel G., Widl E., Wulz C.E.

 Fuente: Physical Review Letters (2012) Volume 108, Issue 11, article number 111803

Editorial: American Physical Society

 Fecha de publicación: 01/03/2012

Nº de páginas: 16

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.108.111801

ISSN: 0031-9007,1079-7114

Url de la publicación: https://doi.org/10.1103/PhysRevLett.108.111801

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