Bibcode
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Grossmann, J.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, N.; Krätschmer, I.; Liko, D.; Madlener, T.; Mikulec, I.; Pree, E.; Rabady, D.; Rad, N.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Spanring, M.; Spitzbart, D.; Strauss, J.; Waltenberger, W.; Wittmann, J.; Wulz, C.-E.; Zarucki, M.; Chekhovsky, V.; Mossolov, V.; Suarez Gonzalez, J.; De Wolf, E. A.; Di Croce, D.; Janssen, X.; Lauwers, J.; Van De Klundert, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; De Bruyn, I.; De Clercq, J.; Deroover, K.; Flouris, G.; Lontkovskyi, D.; Lowette, S.; Moortgat, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Luetic, J.; Maerschalk, T.; Marinov, A.; Randle-conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Yonamine, R.; Zenoni, F.; Zhang, F.; Cimmino, A.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Roskas, C.; Salva, S.; Tytgat, M.; Verbeke, W.; Zaganidis, N.; Bakhshiansohi, H.; Bondu, O. et al.
Bibliographical reference
Physics Letters B, Volume 780, p. 432-454.
Advertised on:
5
2018
Citations
15
Refereed citations
15
Description
A search for long-lived particles was performed with data corresponding
to an integrated luminosity of 2.6 fb-1 collected at a
center-of-mass energy of 13 TeV by the CMS experiment in 2015. The
analysis exploits two customized topological trigger algorithms, and
uses the multiplicity of displaced jets to search for the presence of a
signal decay occurring at distances between 1 and 1000 mm. The results
can be interpreted in a variety of different models. For pair-produced
long-lived particles decaying to two b quarks and two leptons with equal
decay rates between lepton flavors, cross sections larger than 2.5 fb
are excluded for proper decay lengths between 70-100 mm for a long-lived
particle mass of 1130 GeV at 95% confidence. For a specific model of
pair-produced, long-lived top squarks with R-parity violating decays to
a b quark and a lepton, masses below 550-1130 GeV are excluded at 95%
confidence for equal branching fractions between lepton flavors,
depending on the squark decay length. This mass bound is the most
stringent to date for top squark proper decay lengths greater than 3 mm.