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283 papers found.
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Search for supersymmetry in events with at least one photon, missing transverse momentum, and large transverse event activity in proton-proton collisions at \( \sqrt{s}=13 \) TeV

A search for physics beyond the standard model in final states with at least one photon, large transverse momentum imbalance, and large total transverse event activity is presented. Such topologies can be produced in gauge-mediated supersymmetry models in which pair-produced gluinos or squarks decay to photons and gravitinos via short-lived neutralinos. The data sample corresponds ...

Measurements of the associated production of a Z boson and b jets in pp collisions at \({\sqrt{s}} = 8\,\text {TeV} \)

, and indicate if changes were made. Funded by SCOAP3. Page 20 of 34 CMS Collaboration Yerevan Physics Institute, Yerevan, Armenia V. Khachatryan, A. M. Sirunyan, A. Tumasyan National Centre for

Measurement of the triple-differential dijet cross section in proton-proton collisions at \(\sqrt{s}=8\,\text {TeV} \) and constraints on parton distribution functions

. Funded by SCOAP3. CMS Collaboration Yerevan Physics Institute, Yerevan, Armenia A. M. Sirunyan, A. Tumasyan Institute for Nuclear Problems, Minsk, Belarus O. Dvornikov, V. Makarenko, V. Mossolov, J. Suarez

Search for a light pseudoscalar Higgs boson produced in association with bottom quarks in pp collisions at \( \sqrt{s}=8 \) TeV

A search for a light pseudoscalar Higgs boson (A) produced in association with bottom quarks and decaying into a muon pair is reported. The search uses 19.7 fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV, collected by the CMS experiment. No signal is observed in the dimuon mass range from 25 to 60 GeV. Upper limits on the cross section times branching ...

Search for new physics in the monophoton final state in proton-proton collisions at \( \sqrt{s}=13 \) TeV

A search is conducted for new physics in a final state containing a photon and missing transverse momentum in proton-proton collisions at \( \sqrt{s}=13 \) TeV. The data collected by the CMS experiment at the CERN LHC correspond to an integrated luminosity of 12.9 fb−1. No deviations are observed relative to the predictions of the standard model. The results are interpreted as ...

Measurements of the pp → Wγγ and pp → Zγγ cross sections and limits on anomalous quartic gauge couplings at \( \sqrt{s}=8 \) TeV

Measurements are presented of Wγγ and Zγγ production in proton-proton collisions. Fiducial cross sections are reported based on a data sample corresponding to an integrated luminosity of 19.4 fb−1 collected with the CMS detector at a center-of-mass energy of 8 TeV. Signal is identified through the W → ℓν and Z → ℓℓ decay modes, where ℓ is a muon or an electron. The production of ...

Search for top squark pair production in pp collisions at \( \sqrt{s}=13 \) TeV using single lepton events

A search for top squark pair production in pp collisions at \( \sqrt{s}=13 \) TeV is performed using events with a single isolated electron or muon, jets, and a large transverse momentum imbalance. The results are based on data collected in 2016 with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb−1. No significant excess of events is observed ...

Measurements of jet charge with dijet events in pp collisions at \( \sqrt{s}=8 \) TeV

Jet charge is an estimator of the electric charge of a quark, antiquark, or gluon initiating a jet. It is based on the momentum-weighted sum of the electric charges of the jet constituents. Measurements of three charge observables of the leading jet in transverse momentum p T are performed with dijet events. The analysis is carried out with ata collected by the CMS experiment at ...

Search for associated production of dark matter with a Higgs boson decaying to \( \mathrm{b}\overline{\mathrm{b}} \) or γγ at \( \sqrt{s}=13 \) TeV

A search for dark matter is performed looking for events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or to a pair of photons. The data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected in 2015 with the CMS detector at the LHC, correspond to an integrated luminosity of 2.3 fb−1. Results are ...

Identification techniques for highly boosted W bosons that decay into hadrons

In searches for new physics in the energy regime of the LHC, it is becoming increasingly important to distinguish single-jet objects that originate from the merging of the decay products of W bosons produced with high transverse momenta from jets initiated by single partons. Algorithms are defined to identify such W jets for different signals of interest, using techniques that are ...

Search for heavy resonances that decay into a vector boson and a Higgs boson in hadronic final states at \(\sqrt{s} = 13\) \(\,\text {TeV}\)

, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3. CMS Collaboration Yerevan Physics Institute, Yerevan, Armenia A. M. Sirunyan, A. Tumasyan Institute for

Search for a heavy resonance decaying to a top quark and a vector-like top quark at \( \sqrt{s}=13 \) TeV

A search is presented for massive spin-1 Z′ resonances decaying to a top quark and a heavy vector-like top quark partner T. The search is based on a 2.6 fb−1 sample of proton-proton collisions at 13 TeV collected with the CMS detector at the LHC. The analysis is optimized for final states in which the T quark decays to a W boson and a bottom quark. The focus is on all-jet final ...

Measurement of the \( \mathrm{t}\overline{\mathrm{t}} \) production cross section using events with one lepton and at least one jet in pp collisions at \( \sqrt{s}=13 \) TeV

A measurement of the \( \mathrm{t}\overline{\mathrm{t}} \) production cross section at \( \sqrt{s}=13 \) TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.2 fb−1, collected with the CMS detector at the LHC. Final states with one isolated charged lepton (electron or muon) and at least one jet are selected and categorized according to the ...

Search for physics beyond the standard model in events with two leptons of same sign, missing transverse momentum, and jets in proton–proton collisions at \(\sqrt{s} = 13\,\text {TeV} \)

source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3. Yerevan Physics Institute, Yerevan, Armenia A. M. Sirunyan, A. Tumasyan Institut für

Measurement of top quark–antiquark pair production in association with a W or Z boson in pp collisions at \(\sqrt{s} = 8\) \(\,\text {TeV}\)

source are credited. Funded by SCOAP3 / License Version CC BY 4.0. The CMS Collaboration Yerevan Physics Institute, Yerevan, Armenia V. Khachatryan, A. M. Sirunyan, A. Tumasyan Institut fr

Searches for W′ bosons decaying to a top quark and a bottom quark in proton-proton collisions at 13 TeV

Searches are presented for heavy gauge bosons decaying into a top and a bottom quark in data collected by the CMS experiment at \( \sqrt{s}=13 \) TeV that correspond to an integrated luminosity of 2.2 and 2.6 fb−1 in the leptonic and hadronic analyses, respectively. Two final states are analyzed, one containing a single electron, or muon, and missing transverse momentum, and the ...

Measurement of the inclusive energy spectrum in the very forward direction in proton-proton collisions at \( \sqrt{s}=13 \) TeV

The differential cross section for inclusive particle production as a function of energy in proton-proton collisions at a center-of-mass energy of 13 TeV is measured in the very forward region of the CMS detector. The measurement is based on data collected with the CMS apparatus at the LHC, and corresponds to an integrated luminosity of 0.34 μb−1. The energy is measured in the ...

Search for top quark partners with charge 5/3 in proton-proton collisions at \( \sqrt{s}=13 \) TeV

A search for the production of heavy partners of the top quark with charge 5/3 (X5/3) decaying into a top quark and a W boson is performed with a data sample corresponding to an integrated luminosity of 2.3 fb−1, collected in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC. Final states with either a pair of same-sign leptons or a ...