Browsing Faculty of Engineering by Author "Chatrchyan, S."
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Search for narrow resonances in dilepton mass spectra in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2012-08-14)A search for narrow, high-mass resonances decaying to electron or muon pairs has been performed using pp collision data collected at root s = 7 TeV by the CMS experiment in 2011. The data sample corresponds to an integrated ... -
Search for narrow resonances using the dijet mass spectrum in pp collisions at root s=8 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-06-17)Results are presented of a search for the production of new particles decaying to pairs of partons (quarks, antiquarks, or gluons), in the dijet mass spectrum in proton-proton collisions at root s = 8 TeV. The data sample ... -
Search for new physics in events with opposite-sign leptons, jets, and missing transverse energy in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2013-01-08)A search is presented for physics beyond the standard model (BSM) in final states with a pair of opposite-sign isolated leptons accompanied by jets and missing transverse energy. The search uses LHC data recorded at a ... -
Search for new physics in events with photons, jets, and missing transverse energy in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-03)A search for physics beyond the standard model involving events with one or more photons, jets, and missing transverse energy has been performed by the CMS experiment. The data sample corresponds to an integrated luminosity ... -
Search for new physics in events with same-sign dileptons and b jets in pp collisions at root s=8 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-03)A search for new physics is performed using events with isolated same-sign leptons and at least two bottom-quark jets in the final state. Results are based on a sample of proton-proton collisions collected at a center-of-mass ... -
Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2012-08)A search for new physics is performed using isolated same-sign dileptons with at least two b-quark jets in the final state. Results are based on a 4.98 fb(-1) sample of proton-proton collisions at a centre-of-mass energy ... -
Search for new physics in events with same-sign dileptons and jets in pp collisions at s√s = 8 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Nature, 2014-01)A search for new physics is performed based on events with jets and a pair of isolated, same-sign leptons. The results are obtained using a sample of proton-proton collision data collected by the CMS experiment at a ... -
Search for new physics in final states with a lepton and missing transverse energy in pp collisions at the LHC
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-04-01)This Letter describes the search for an enhanced production rate of events with a charged lepton and a neutrino in high-energy pp collisions at the LHC. The analysis uses data collected with the CMS detector, with an ... -
Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2012-10-26)A search for physics beyond the standard model is performed in events with at least three jets and large missing transverse momentum produced in proton-proton collisions at a center-of-mass energy of root s = 7 TeV. No ... -
Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at root s=8 Tev
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2014-06)A search for new physics is performed in multijet events with large missing transverse momentum produced in proton-proton collisions at root s = 8TeV using a data sample corresponding to an integrated luminosity of 19.5 ... -
Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2012-11)A search is performed for long-lived neutral particles decaying into a photon and invisible particles. An example of such a signature is the decay of the lightest neutralino with nonzero lifetime into a gravitino and a ... -
Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2012-08-17)A search for new physics is performed in events with two same-sign isolated leptons, hadronic jets, and missing transverse energy in the final state. The analysis is based on a data sample corresponding to an integrated ... -
Search for pair production of excited top quarks in the lepton plus jets final state
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2014-06)A search is performed for pair-produced spin-3/2 excited top quarks , each decaying to a top quark and a gluon. The search uses data collected with the CMS detector from pp collisions at a center-of-mass energy of = 8 TeV, ... -
Search for pair production of first- and second-generation scalar leptoquarks in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2012-09-01)Results are presented from a search for the pair production of first- and second-generation scalar leptoquarks in proton-proton collisions at root s = 7 TeV. The data sample corresponds to an integrated luminosity of 5.0 ... -
Search for pair production of third-generation leptoquarks and top squarks in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-02-22)Results are presented from a search for the pair production of third-generation scalar and vector leptoquarks, as well as for top squarks in R-parity-violating supersymmetric models. In either scenario, the new, heavy ... -
Search for pair-produced dijet resonances in four-jet final states in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2013-04-05)A search for the pair production of a heavy, narrow resonance decaying into two jets has been performed using events collected in root s = 7 TeV pp collisions with the CMS detector at the LHC. The data sample corresponds ... -
Search for physics beyond the standard model in events with tau leptons, jets, and large transverse momentum imbalance in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-07)A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for t (t) over bar events selected in the dilepton final state from a data sample corresponding to an integrated luminosity of 5.0 fb(-1) ... -
Search for resonant t(t)over-bar production in lepton plus jets events in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2012-12)A model-independent search for the production of heavy resonances decaying into top-antitop quark pairs is presented. The search is based on events containing one lepton (muon or electron) and at least two jets selected ... -
Search for stopped long-lived particles produced in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2012-08)A search has been performed for long-lived particles that have stopped in the CMS detector, during 7TeV proton-proton operations of the CERN LHC. The existence of such particles could be inferred from observation of their ... -
Search for supersymmetry in events with b-quark jets and missing transverse energy in pp collisions at 7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2012-10-01)Results are presented from a search for physics beyond the standard model based on events with large missing transverse energy, at least three jets, and at least one, two, or three b-quark jets. The study is performed using ...
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