Search for heavy metastable particles decaying to jet pairs in pp̅ collisions at √s=1.96  TeV

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URI: http://hdl.handle.net/10902/2276
ISSN: 1550-7998
ISSN: 1550-2368
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Autoría
Aaltonen, Timo Antero; Amerio, Silvia; Amidei, Dante; Anastassov, Anton; Annovi, Alberto; Antos, Jaroslav; Apollinari, Giorgio; Appel, Jeffrey A.; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, GervasioAutoridad Unican; Palencia Cortezón, José Enrique; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vila Álvarez, Iván Autoridad Unican; Vilar Cortabitarte, RocíoAutoridad Unican; Vizán García, Jesús ManuelAutoridad Unican; Apresyan, Artur; [et al.]
Fecha
2012-01-24
Derechos
© 2012 American Physical Society
Publicado en
Physical review. D, Particles, fields, gravitation, and cosmology, vol. 85, iss. 1, art. num. 012007 (2012)
Editorial
American Physical Society
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Resumen/Abstract
A search is performed for heavy metastable particles that decay into jet pairs with a macroscopic lifetime (cτ∼1  cm) in pp̅ collisions at √s=1.96  TeV using data from the CDF II detector at Fermilab corresponding to an integrated luminosity of 3.2  fb-1. To estimate the standard model background, a data-driven approach is used. Probability-density functions are constructed to model secondary vertices from known processes. No statistically significant excess is observed above the background. Limits on the production cross section in a hidden valley benchmark phenomenology are set for various Higgs boson masses as well as metastable particle masses and lifetimes.
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