Browsing by Author "Yumiceva, Francisco"
Now showing items 1-20 of 141
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Angular coefficients of Z bosons produced in pp collisions at √s=8 TeV and decaying to μ+μ- as a function of transverse momentum and rapidity
Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2015-11-15)Measurements of the five most significant angular coefficients, A0 through A4, for Z bosons produced in pp collisions at √s=8 TeV and decaying to μ+μ- are presented as a function of the transverse momentum and rapidity of ... -
Charge Injector Card for Calibration of the CMS Hadron Calorimeter
Schmelzle, Robert; Pelc, AlexanderThe Charge Injector Card simulates the response of the CMS Hadron Calorimeter (HF) sensors by injecting pulses of charge into the readout in the range of 3 fC to 330 pC. -
Combination of inclusive and differential (Formula Presented) charge asymmetry measurements using ATLAS and CMS data at (Formula Presented)= 7 and 8 TeV
Aaboud, M.; Aad, Georges; Abbott, Brad K.; Baarmand, Marc M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Noonan, Daniel; Roy, Tuhin S.; Yumiceva, Francisco (2018-04)This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC ... -
Comparison of the Z/γ ∗ + jets to γ + jets cross sections in pp collisions at √s = 8 TeV
Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Bhopatkar, Vardan; Hohlmann, Marcus; Kalakhety, Himali; Mareskas-palcek, Darren; Roy, Tuhin S.; Yumiceva, Francisco (2015-10-20)A comparison of the differential cross sections for the processes Z/γ * + jets and photon (γ)+jets is presented. The measurements are based on data collected with the CMS detector at √s = 8 TeV corresponding to an integrated ... -
Constraints on the chiral magnetic effect using charge-dependent azimuthal correlations in pPb and PbPb collisions at the CERN Large Hadron Collider
Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Noonan, Daniel; Roy, Tuhin S.; Yumiceva, Francisco (2018-04-23)Charge-dependent azimuthal correlations of same- and opposite-sign pairs with respect to the second- and third-order event planes have been measured in pPb collisions at sNN=8.16TeV and PbPb collisions at 5.02 TeV with the ... -
Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2014-09-07)Constraints are presented on the total width of the recently discovered Higgs boson, ΓH, using its relative on-shell and off-shell production and decay rates to a pair of Z bosons, where one Z boson decays to an electron ... -
Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV
Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.; Adam, Wolfgang; Bergauer, Thomas; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco; Adams, M.R. (2015-07-13)The study of the spin-parity and tensor structure of the interactions of the recently discovered Higgs boson is performed using the H to ZZ, Z gamma*, gamma* gamma* to 4 l, H to WW to l nu l nu, and H to gamma gamma decay ... -
Correlations between jets and charged particles in PbPb and pp collisions at sNN=2.76 TeV
Khachatryan, Vardan; Sirunyan, A.M.; Baarmand, Marc M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Kalakhety, Himali; Noonan, Daniel; Roy, Tuhin S.; Yumiceva, Francisco (2016-02-23)The quark-gluon plasma is studied via medium-induced changes to correlations between jets and charged particles in PbPb collisions compared to pp reference data. This analysis uses data sets from PbPb and pp collisions ... -
Erratum to: Comparison of the Z/γ* + jets to γ + jets cross sections in pp collisions at √s = 8 (JHEP, (2015), 10, 128)
Khachatryan, Vallary; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Bhopatkarv, Vallary; Hohlmann, Marcus; Kalakhety, Himali; Mareskas-palcek, Darren; Roy, Tuhin S.; Yumiceva, Francisco (2016-04-04)An error was found in the published version in the top right plots in figure 2 and figure 3. In both cases the normalization of the photon plots is incorrect by the factor of the luminosity of 19.7. The corrected figures ... -
Erratum to: Measurements of the Z→4ℓ branching fraction, and constraints on anomalous triple gauge couplings at s=13TeV
Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Noonan, Daniel; Roy, Tuhin S.; Yumiceva, Francisco (2018-06-01)Reference [6]: “Phys. Lett. B 763, 280” should have been corrected into “Phys. Lett. B 763, 280 (2016)”. -
Erratum to: Search for new physics in events with same-sign dileptons and jets in pp collisions at √s = 8 TeV
Chatrchyan, S.A.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2015-01-07)Erratum to: JHEP01(2014)163. The online version of the original article can be found at http://dx.doi.org/10.1007/JHEP01(2014)16 -
Event activity dependence of Υ(nS) production in √SNN = 5.02 TeV pPb and √s = 2.76 TeV pp collisions
Chatrchyan, S.A.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2014-04-15)The production of Y (1S), Y (2S), and Y (3S) is investigated in pPb and pp collisions at centre-of-mass energies per nucleon pair of 5.02 TeV and 2.76 TeV, respectively. The datasets correspond to integrated luminosities ... -
Identification techniques for highly boosted W bosons that decay into hadrons
Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2014-12-02)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 ... -
Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at √s=8 TeV
Chatrchyan, S.A.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2014-02-05)A search is performed for a massive new vector-like quark T, with charge 2 3 , that is pair produced together with its antiparticle in proton–proton collisions. The data were collected by the CMS experiment at the Large ... -
Interpretation of searches for supersymmetry with simplified models
Chatrchyan, S.A.; Khachatryan, Vladimir A.; Sirunyan, A.M.; Tumasyan, A.R.; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor; Yumiceva, Francisco (2013-09-23)The results of searches for supersymmetry by the CMS experiment are interpreted in the framework of simplified models. The results are based on data corresponding to an integrated luminosity of 4.73 to 4.98 fb-1. The data ... -
Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies
Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, W.; Bergauer, T.; Dragicevic, M.; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco (2015-03-06)Measurements of two-particle angular correlations between an identified strange hadron (K0 S or Λ/Λ) and a charged particle, emitted in pPb collisions, are presented over a wide range in pseudorapidity and full azimuth. ... -
Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at √s=7 TeV
Chatrchyan, S.A.; Khachatryan, Vladimir A.; Sirunyan, A.M.; Tumasyan, A.R.; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor; Yumiceva, Francisco (2013-04-25)The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at √s=7 TeV is presented. The results are based on a data set corresponding to an integrated luminosity ... -
Measurement of b hadron lifetimes in pp collisions at √s = 8 TeV
Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Noonan, Daniel; Roy, Tuhin S.; Yumiceva, Francisco (2018-06-07)Measurements are presented of the lifetimes of the B ⁰, Bs0, Λb0, and Bc+ hadrons using the decay channels B0→J/ψK∗(892)0, B0→J/ψKS0, Bs0→J/ψπ+π-, Bs0→J/ψϕ(1020), Λb0→J/ψΛ0, and Bc+→J/ψπ+. The data sample, corresponding ... -
Measurement of differential and integrated fiducial cross sections for Higgs boson production in the four-lepton decay channel in pp collisions at √s = 7 and 8 TeV
Kalakhety, Vardan; Sirunyan, A.M.; Baarmand, Marc M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Kalakhety, Himali; Noonan, Daniel; Roy, Tuhin S.; Yumiceva, Francisco (2016-04-01): Integrated fiducial cross sections for the production of four leptons via the H → 4` decays (` = e, µ) are measured in pp collisions at √ s = 7 and 8 TeV. Measurements are performed with data corresponding to integrated ... -
Measurement of diffractive dissociation cross sections in pp collisions at s =7TeV
Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.; Adam, Wolfgang; Bergauer, T.; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, Himali; Yumiceva, Francisco; Adams, M.R. (2015-07-06)Measurements of diffractive dissociation cross sections in pp collisions at √s = 7 TeV are presented in kinematic regions defined by the masses M[subscript X] and M[subscript Y] of the two final-state hadronic systems ...