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Search in leptonic channels for heavy resonances decaying to long-lived neutral particles
Baringer, Philip S. Bean, Alice Benelli, Gabriele Kenny, R. P., III Murray, Michael J. Noonan, Danny Sanders, Stephen J. Stringer, Robert W. Tinti, Gemma Wood, Jeffrey Scott
Baringer, Philip S.
Bean, Alice
Benelli, Gabriele
Kenny, R. P., III
Murray, Michael J.
Noonan, Danny
Sanders, Stephen J.
Stringer, Robert W.
Tinti, Gemma
Wood, Jeffrey Scott
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Abstract
A search is performed for heavy resonances decaying to two long-lived massive neutral particles, each decaying to leptons. The experimental signature is a distinctive topology consisting of a pair of oppositely charged leptons originating at a separated secondary vertex. Events were collected by the CMS detector at the LHC during pp collisions at sā=7 TeV, and selected from data samples corresponding to 4.1 (5.1) fb(ā1) of integrated luminosity in the electron (muon) channel. No significant excess is observed above standard model expectations, and an upper limit is set with 95% confidence level on the production cross section times the branching fraction to leptons, as a function of the long-lived massive neutral particle lifetime.
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This is the publisher's version, also available electronically from http://link.springer.com/article/10.1007%2FJHEP02%282013%29085.
Date
2013-02-14
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Springer Berlin Heidelberg
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Hadron-Hadron Scattering
Citation
S. Chatrchyan et al. (The CMS Collaboration). (2013). "Search in leptonic channels for heavy resonances decaying to long-lived neutral particles." Journal of High Energy Physics, 02(2013)085. http://www.dx.doi.org/10.1007/JHEP02(2013)085.