An inclusive search for supersymmetry in events with at least one b-tagged jet is performed using proton-proton collision data collected by the CMS experiment in 2012 at a center-of-mass energy of 8 TeV. The data set size corresponds to an integrated luminosity of 19.3 fb(-1). The two-dimensional distribution of the razor variables R-2 and M-R is studied in events with and without leptons. The data are found to be consistent with the expected background, which is modeled with an empirical function. Exclusion limits on supersymmetric particle masses at a 95% confidence level are derived in several simplified supersymmetric scenarios for several choices of the branching fractions. By combining the likelihoods of a search in events without leptons and a search that requires a single lepton (electron or muon), an improved bound on the top-squark mass is obtained. Assuming the lightest supersymmetric particle to be stable and weakly interacting, and to have a mass of 100 GeV, the branching-...fraction-dependent (-independent) production of gluinos is excluded for gluino masses up to 1310 (1175) GeV. The corresponding limit for top-squark pair production is 730 (645) GeV.
Извор:
Physical Review D, 2015, 91, 5
Финансирање / пројекти:
Science and Technology Facilities Council [ST/K001604/1, CMS]
TY - JOUR
AU - Khachatryan, V.
AU - Adžić, Petar
AU - Ekmedžić, Marko
AU - Milošević, Jovan
AU - Reković, Vladimir
AU - Đorđević, Miloš
AU - Milenović, Predrag
PY - 2015
UR - https://vinar.vin.bg.ac.rs/handle/123456789/464
AB - An inclusive search for supersymmetry in events with at least one b-tagged jet is performed using proton-proton collision data collected by the CMS experiment in 2012 at a center-of-mass energy of 8 TeV. The data set size corresponds to an integrated luminosity of 19.3 fb(-1). The two-dimensional distribution of the razor variables R-2 and M-R is studied in events with and without leptons. The data are found to be consistent with the expected background, which is modeled with an empirical function. Exclusion limits on supersymmetric particle masses at a 95% confidence level are derived in several simplified supersymmetric scenarios for several choices of the branching fractions. By combining the likelihoods of a search in events without leptons and a search that requires a single lepton (electron or muon), an improved bound on the top-squark mass is obtained. Assuming the lightest supersymmetric particle to be stable and weakly interacting, and to have a mass of 100 GeV, the branching-fraction-dependent (-independent) production of gluinos is excluded for gluino masses up to 1310 (1175) GeV. The corresponding limit for top-squark pair production is 730 (645) GeV.
T2 - Physical Review D
T1 - Search for supersymmetry using razor variables in events with b-tagged jets in pp collisions at root s=8 TeV
VL - 91
IS - 5
DO - 10.1103/PhysRevD.91.052018
ER -
@article{
author = "Khachatryan, V. and Adžić, Petar and Ekmedžić, Marko and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag",
year = "2015",
abstract = "An inclusive search for supersymmetry in events with at least one b-tagged jet is performed using proton-proton collision data collected by the CMS experiment in 2012 at a center-of-mass energy of 8 TeV. The data set size corresponds to an integrated luminosity of 19.3 fb(-1). The two-dimensional distribution of the razor variables R-2 and M-R is studied in events with and without leptons. The data are found to be consistent with the expected background, which is modeled with an empirical function. Exclusion limits on supersymmetric particle masses at a 95% confidence level are derived in several simplified supersymmetric scenarios for several choices of the branching fractions. By combining the likelihoods of a search in events without leptons and a search that requires a single lepton (electron or muon), an improved bound on the top-squark mass is obtained. Assuming the lightest supersymmetric particle to be stable and weakly interacting, and to have a mass of 100 GeV, the branching-fraction-dependent (-independent) production of gluinos is excluded for gluino masses up to 1310 (1175) GeV. The corresponding limit for top-squark pair production is 730 (645) GeV.",
journal = "Physical Review D",
title = "Search for supersymmetry using razor variables in events with b-tagged jets in pp collisions at root s=8 TeV",
volume = "91",
number = "5",
doi = "10.1103/PhysRevD.91.052018"
}
Khachatryan, V., Adžić, P., Ekmedžić, M., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2015). Search for supersymmetry using razor variables in events with b-tagged jets in pp collisions at root s=8 TeV. in Physical Review D, 91(5).
https://doi.org/10.1103/PhysRevD.91.052018
Khachatryan V, Adžić P, Ekmedžić M, Milošević J, Reković V, Đorđević M, Milenović P. Search for supersymmetry using razor variables in events with b-tagged jets in pp collisions at root s=8 TeV. in Physical Review D. 2015;91(5).
doi:10.1103/PhysRevD.91.052018 .
Khachatryan, V., Adžić, Petar, Ekmedžić, Marko, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for supersymmetry using razor variables in events with b-tagged jets in pp collisions at root s=8 TeV" in Physical Review D, 91, no. 5 (2015),
https://doi.org/10.1103/PhysRevD.91.052018 . .
