Search results for: B. Alver

Items from 1 to 20 out of 82 results

article

Search for neutral Higgs bosons decaying to tau pairs in pp collisions at s=7 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 713 > 2 > 68-90

A search for neutral Higgs bosons decaying to tau pairs at a center-of-mass energy of 7 TeV is performed using a dataset corresponding to an integrated luminosity of 4.6 fb⁻¹ recorded by the CMS experiment at the LHC. The search is sensitive to both the standard model Higgs boson and to the neutral Higgs bosons predicted by the minimal supersymmetric extension of the standard model (MSSM). No excess...

article

Search for large extra dimensions in dimuon and dielectron events in pp collisions at s=7 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 711 > 1 > 15-34

Results are presented from a search for large, extra spatial dimensions in events with either two isolated muons or two isolated electrons. The data are from proton–proton interactions at s=7 TeV collected with the CMS detector at the LHC. The size of the data sample corresponds to an integrated luminosity of approximately 2 fb−1. The observed dimuon and dielectron mass spectra are found to be consistent...

article

Search for the standard model Higgs boson decaying into two photons in pp collisions at s=7 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 710 > 3 > 403-425

A search for a Higgs boson decaying into two photons is described. The analysis is performed using a dataset recorded by the CMS experiment at the LHC from pp collisions at a center-of-mass energy of 7 TeV, which corresponds to an integrated luminosity of 4.8 fb⁻¹. Limits are set on the cross section of the standard model Higgs boson decaying to two photons. The expected exclusion limit at 95% confidence...

article

Search for the standard model Higgs boson decaying to bottom quarks in pp collisions at s=7 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 710 > 2 > 284-306

A search for the standard model Higgs boson (H) decaying to bb¯ when produced in association with weak vector bosons (V) is reported for the following modes: W(μν)H, W(eν)H, Z(μμ)H, Z(ee)H and Z(νν)H. The search is performed in a data sample corresponding to an integrated luminosity of 4.7 fb⁻¹, recorded by the CMS detector in proton–proton collisions at the LHC with a center-of-mass energy of 7 TeV...

article

Measurement of isolated photon production in pp and PbPb collisions at sNN=2.76 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 710 > 2 > 256-277

Isolated photon production is measured in proton–proton and lead–lead collisions at nucleon–nucleon centre-of-mass energies of 2.76 TeV in the pseudorapidity range |η|<1.44 and transverse energies ET between 20 and 80 GeV with the CMS detector at the LHC. The measured ET spectra are found to be in good agreement with next-to-leading-order perturbative QCD predictions. The ratio of PbPb to pp isolated...

article

Combined results of searches for the standard model Higgs boson in pp collisions at s=7 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 710 > 1 > 26-48

Combined results are reported from searches for the standard model Higgs boson in proton–proton collisions at s=7 TeV in five Higgs boson decay modes: γγ, bb, ττ, WW, and ZZ. The explored Higgs boson mass range is 110–600 GeV. The analysed data correspond to an integrated luminosity of 4.6–4.8 fb⁻¹. The expected excluded mass range in the absence of the standard model Higgs boson is 118–543 GeV at...

article

Search for the standard model Higgs boson decaying to W+W− in the fully leptonic final state in pp collisions at s=7 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 710 > 1 > 91-113

A search for the standard model Higgs boson decaying to W+W− in pp collisions at s=7 TeV is reported. The data are collected at the LHC with the CMS detector, and correspond to an integrated luminosity of 4.6 fb⁻¹. The W+W− candidates are selected in events with two charged leptons and large missing transverse energy. No significant excess of events above the standard model background expectations...

article

Measurement of the charge asymmetry in top-quark pair production in proton–proton collisions at s=7 TeV

S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, more

Physics Letters B > 2012 > 709 > 1-2 > 28-49

The difference in angular distributions between top quarks and antiquarks, commonly referred to as the charge asymmetry, is measured in pp collisions at the LHC with the CMS experiment. The data sample corresponds to an integrated luminosity of 1.09 fb−1 at a centre-of-mass energy of 7 TeV. Top-quark pairs are selected in the final state with an electron or muon and four or more jets. At least one...

article

Study of high-p _T charged particle suppression in PbPb compared to pp collisions at $\sqrt{s_{\mathrm{NN}}}=2.76~\mathrm{TeV}$

The CMS Collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

The European Physical Journal C > 2012 > 72 > 3 > 1-22

The transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at $\sqrt{s_{NN}}=2.76~\mathrm{TeV}$ by the CMS experiment at the LHC. In the transverse momentum range p _T=5–10 GeV/c, the charged particle yield in the most central PbPb collisions is suppressed by up to a factor of 7 compared to the pp yield scaled by the number of incoherent nucleon–nucleon collisions...

article

Search for quark compositeness in dijet angular distributions from pp collisions at $\sqrt {s} = 7{ }$ TeV

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 5 > 1-29

Abstract A search for quark compositeness using dijet angular distributions from pp collisions at $\sqrt {s} = 7$ TeV is presented. The search has been carried out using a data sample corresponding to an integrated luminosity of 2.2 fb⁻¹, recorded by the CMS experiment at the LHC. Normalized dijet angular distributions have been measured for dijet invariant masses from 0.4 TeV to above 3 TeV...

article

Suppression of non-prompt J/ψ, prompt J/ψ, and $\Upsilon$ (1S) in PbPb collisions at $\sqrt {{{s_{\text{NN}}}}} = 2.76$ TeV

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 5 > 1-54

Abstract Yields of prompt and non-prompt J/ψ, as well as $\Upsilon$ (1S) mesons, are measured by the CMS experiment via their μ ⁺ μ ⁻ decays in PbPb and pp collisions at $\sqrt {{{s_{\text{NN}}}}} = 2.76$ TeV for quarkonium rapidity |y| < 2.4. Differential cross sections and nuclear modification factors are reported as functions of y and transverse momentum p _T, as well as collision centrality...

article

Measurement of the Z/γ* + b-jet cross section in pp collisions at $\sqrt {s} = 7$ TeV

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 6 > 1-30

Abstract The production of b jets in association with a Z/γ* boson is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7 TeV and recorded by the CMS detector. The inclusive cross section for Z/γ* + b-jet production is measured in a sample corresponding to an integrated luminosity of 2.2 fb⁻¹. The Z/γ* + b-jet cross section with Z/γ* → ℓℓ (where ℓℓ = ee or...

article

Search for the standard model Higgs boson in the H → ZZ → ℓ⁺ℓ⁻τ⁺τ⁻ decay channel in pp collisions at $ \sqrt {s} = {7}\;{\text{TeV}} $

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 3 > 1-30

Abstract A search is reported for the standard model Higgs boson in the H → ZZ → ℓ⁺ℓ⁻τ ⁺τ ⁻ decay mode, where ℓ = μ or e, in proton-proton collisions at $\sqrt {s} = {7}\;{\text{TeV}}$ , corresponding to an integrated luminosity of 4.7 fb⁻¹ collected with the CMS detector at the LHC. No evidence is found for a significant deviation from the background expectation. An upper limit four to twelve...

article

Inclusive b-jet production in pp collisions at $\sqrt {s} = 7TeV$

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 4 > 1-36

Abstract The inclusive b-jet production cross section in pp collisions at a center-of mass energy of 7 TeV is measured using data collected by the CMS experiment at the LHC. The cross section is presented as a function of the jet transverse momentum in the range 18 < p _T < 200 GeV for several rapidity intervals. The results are also given as the ratio of the b-jet production cross section...

article

Search for microscopic black holes in pp collisions at $$ \sqrt {s} = {\text{7TeV}} $$

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 4 > 1-36

Abstract A search for microscopic black holes in pp collisions at a center-of-mass energy of 7 TeV is presented. The data sample corresponds to an integrated luminosity of 4.7 fb⁻¹ recorded by the CMS experiment at the LHC in 2011. Events with large total transverse energy have been analyzed for the presence of multiple energetic jets, leptons, and photons, which are typical signals of evaporating...

article

Centrality dependence of dihadron correlations and azimuthal anisotropy harmonics in PbPb collisions at $\sqrt{s_{NN}}= 2.76\ \mbox{TeV}$

The CMS Collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

The European Physical Journal C > 2012 > 72 > 5 > 1-26

Measurements from the CMS experiment at the LHC of dihadron correlations for charged particles produced in PbPb collisions at a nucleon–nucleon centre-of-mass energy of 2.76 TeV are presented. The results are reported as a function of the particle transverse momenta (p _T) and collision centrality over a broad range in relative pseudorapidity (Δη) and the full range of relative azimuthal angle (Δϕ)...

article

Measurement of the production cross section for pairs of isolated photons in pp collisions at $ \sqrt {s} = 7\;TeV $

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 1 > 1-38

Abstract The integrated and differential cross sections for the production of pairs of isolated photons is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 36 pb⁻¹ is analysed. A next-to-leading-order perturbative QCD calculation is compared to the measurements. A discrepancy is observed...

article

Exclusive γγ → μ ⁺ μ ⁻ production in proton-proton collisions at $\sqrt {s} = {7}$ TeV

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 1 > 1-39

Abstract A measurement of the exclusive two-photon production of muon pairs in proton-proton collisions at $\sqrt {s} = {7}$ TeV, pp → pμ ⁺ μ ⁻p, is reported using data corresponding to an integrated luminosity of 40 pb⁻¹. For muon pairs with invariant mass greater than 11.5 GeV, transverse momentum p _T (μ) > 4 GeV and pseudorapidity |η(μ)| < 2.1, a fit to the dimuon p _T(μ ⁺ μ ⁻) distribution...

article

Search for the standard model Higgs boson in the H → ZZ → 2ℓ2ν channel in pp collisions at $ \sqrt {\text{s}} = {7}\;{\text{TeV}} $

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 3 > 1-32

Abstract A search for the standard model Higgs boson in the H → ZZ → 2ℓ2ν decay channel, where ℓ = e or μ, in pp collisions at a center-of-mass energy of 7 TeV is presented. The data were collected at the LHC, with the CMS detector, and correspond to an integrated luminosity of 4.6 fb⁻¹. No significant excess is observed above the background expectation, and upper limits are set on the Higgs boson...

article

Shape, transverse size, and charged-hadron multiplicity of jets in pp collisions at $ \sqrt{s}=7\;TeV $

The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, more

Journal of High Energy Physics > 2012 > 2012 > 6 > 1-39

Abstract Measurements of jet characteristics from inclusive jet production in protonproton collisions at a centre-of-mass energy of 7 TeV are presented. The data sample was collected with the CMS detector at the LHC during 2010 and corresponds to an integrated luminosity of 36 pb⁻¹. The mean charged-hadron multiplicity, the differential and integral jet shape distributions, and two independent moments...

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HADRON-HADRON SCATTERING (28)
CMS (24)
PHYSICS (22)
HIGGS (5)
LHC (5)
EXOTICA (3)
QCD (3)
COMPUTING (2)
EXTRA DIMENSIONS (2)
SOFTWARE (2)
SUPERSYMMETRY (2)
TOP QUARK (2)
ADD (1)
BLACK HOLES (1)
CENTRALITY (1)
CHARGE RATIO (1)
COSMIC RAYS (1)
CROSS SECTION (1)
DIELECTRON (1)
DIJET (1)
DIMUON (1)
ELECTROWEAK (1)
EVENT SHAPES (1)
FIELD THEORIES IN DIMENSIONS OTHER THAN FOUR (1)
GMSB (1)
GRAVITONS (1)
HEAVY ION (1)
HEAVY-IONS (1)
JET (1)
JETS (1)
LEPTOQUARKS (1)
MSUGRA (1)
MULTIJETS RATIO (1)
MULTILEPTONS (1)
MULTIPLICITY (1)
MUON (1)
PARTICLE PHYSICS (1)
PHOBOS (1)
PHOTONS (1)
RESONANCE (1)
RHIC (1)
RPV (1)
SEARCH (1)
STATISTICS (1)
TAU (1)
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Springer (55)
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Search results for: B. Alver

Search for neutral Higgs bosons decaying to tau pairs in pp collisions at s=7 TeV

Search for large extra dimensions in dimuon and dielectron events in pp collisions at s=7 TeV

Search for the standard model Higgs boson decaying into two photons in pp collisions at s=7 TeV

Search for the standard model Higgs boson decaying to bottom quarks in pp collisions at s=7 TeV

Measurement of isolated photon production in pp and PbPb collisions at sNN=2.76 TeV

Combined results of searches for the standard model Higgs boson in pp collisions at s=7 TeV

Search for the standard model Higgs boson decaying to W+W− in the fully leptonic final state in pp collisions at s=7 TeV

Measurement of the charge asymmetry in top-quark pair production in proton–proton collisions at s=7 TeV

Study of high-p _T charged particle suppression in PbPb compared to pp collisions at $\sqrt{s_{\mathrm{NN}}}=2.76~\mathrm{TeV}$

Search for quark compositeness in dijet angular distributions from pp collisions at $\sqrt {s} = 7{ }$ TeV

Suppression of non-prompt J/ψ, prompt J/ψ, and $\Upsilon$ (1S) in PbPb collisions at $\sqrt {{{s_{\text{NN}}}}} = 2.76$ TeV

Measurement of the Z/γ* + b-jet cross section in pp collisions at $\sqrt {s} = 7$ TeV

Search for the standard model Higgs boson in the H → ZZ → ℓ⁺ℓ⁻τ⁺τ⁻ decay channel in pp collisions at $ \sqrt {s} = {7}\;{\text{TeV}} $

Inclusive b-jet production in pp collisions at $\sqrt {s} = 7TeV$

Search for microscopic black holes in pp collisions at $$ \sqrt {s} = {\text{7TeV}} $$

Centrality dependence of dihadron correlations and azimuthal anisotropy harmonics in PbPb collisions at $\sqrt{s_{NN}}= 2.76\ \mbox{TeV}$

Measurement of the production cross section for pairs of isolated photons in pp collisions at $ \sqrt {s} = 7\;TeV $

Exclusive γγ → μ ⁺ μ ⁻ production in proton-proton collisions at $\sqrt {s} = {7}$ TeV

Search for the standard model Higgs boson in the H → ZZ → 2ℓ2ν channel in pp collisions at $ \sqrt {\text{s}} = {7}\;{\text{TeV}} $

Shape, transverse size, and charged-hadron multiplicity of jets in pp collisions at $ \sqrt{s}=7\;TeV $

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