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539 Result(s)
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Article
Open AccessExperimental studies of e + e −→ some charmless processes containing K S 0 at \(\sqrt{s}=3.773\) and 3.65 GeV
We measure the observed cross sections for the charmless processes e + e −→K S
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Open AccessTransverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at \(\sqrt{s} = 0.9 \) and 2.36 TeV
Measurements of inclusive charged-hadron transverse-momentum and pseudorapidity distributions are presented for proton-proton collisions at ...
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Article
Open AccessSearch for ψ(3770)→ charmless final states involving η or π 0 mesons
We search for ψ(3770)→π + π − η, K + K − ...
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Article
Open AccessObservation of long-range, near-side angular correlations in proton-proton collisions at the LHC
Results on two-particle angular correlations for charged particles emitted in proton-proton collisions at center-of-mass energies of 0.9, 2.36, and 7 TeV are presented, using data collected with the CMS detect...
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Article
Open AccessQuantum Fisher Information in Two-Qubit Pure States
In terms of quantum Fisher information (QFI), a quantity χ 2 was introduced by Pezzé and Smerzi (Phys. Rev. Lett. 102 100401, 2009). They pointed out that the inequality χ ...
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Open AccessCMS tracking performance results from early LHC operation
The first LHC pp collisions at centre-of-mass energies of 0.9 and 2.36 TeV were recorded by the CMS detector in December 2009. The trajectories of charged particles produced in the collisions were reconstructe...
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Open AccessFirst measurement of the underlying event activity at the LHC with \(\sqrt{s} = 0.9\) TeV
A measurement of the underlying activity in scattering processes with p T scale in the GeV region is performed in proton–proton collisions at ...
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Open AccessMeasurements of inclusive W and Z cross sections in pp collisions at \( \sqrt {s} = 7 \) TeV
Measurements of inclusive W and Z boson production cross sections in pp collisions at \( \sqrt {s} = 7 \) TeV are prese...
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Open AccessCharged particle multiplicities in pp interactions at \( \sqrt {s} = 0.9 \) , 2.36, and 7 TeV
Measurements of primary charged hadron multiplicity distributions are presented for non-single-diffractive events in proton-proton collisions at centre-of-mass energies of
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Article
Open AccessSearch for heavy stable charged particles in pp collisions at \( \sqrt {s} = 7\;{\text{TeV}} \)
The result of a search at the LHC for heavy stable charged particles produced in pp collisions at \( \sqrt {s} = 7\;{\text{TeV}} \) ...
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Article
Open AccessInclusive b-hadron production cross section with muons in pp collisions at \( \sqrt {s} = 7\;{\text{TeV}} \)
A measurement of the b-hadron production cross section in proton-proton collisions at \( \sqrt {s} = 7\;{\text{TeV}} \)
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Article
Open AccessPrompt and non-prompt J/ψ production in pp collisions at \(\sqrt{s} = 7\) TeV
The production of J/ψ mesons is studied in pp collisions at \(\sqrt{s} = 7\) TeV with the CMS experiment at the LHC. The measurem...
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Article
Open AccessMeasurement of \( {\text{B}}\overline {\text{B}} \) angular correlations based on secondary vertex reconstruction at \( \sqrt {s} = 7\,{\text{TeV}} \)
A measurement of the angular correlations between beauty and anti-beauty hadrons ( \( {\text{B}}\overline {\text{B}} \) )...
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Article
Open AccessMeasurement of the lepton charge asymmetry in inclusive W production in pp collisions at \( \sqrt {s} = 7\;{\text{TeV}} \)
A measurement of the lepton charge asymmetry in inclusive pp → WX production at \( \sqrt {s} = 7\;{\text{TeV}} \) is pr...
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Open AccessMeasurement of Bose-Einstein correlations in pp collisions at \( \sqrt {s} = 0.9 \) and 7 TeV
Bose-Einstein correlations between identical particles are measured in samples of proton-proton collisions at 0.9 and 7 TeV centre-of-mass energies, recorded by the CMS experiment at the LHC. The signal is obs...
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Article
Open AccessStrange particle production in pp collisions at \( \sqrt {s} = 0.9 \) and 7 TeV
The spectra of strange hadrons are measured in proton-proton collisions, recorded by the CMS experiment at the CERN LHC, at centre-of-mass energies of 0.9 and 7 TeV. The
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Article
Open AccessSearch for large extra dimensions in the diphoton final state at the Large Hadron Collider
A search for large extra spatial dimensions via virtual-graviton exchange in the diphoton channel has been carried out with the CMS detector at the LHC. No excess of events above the standard model expectation...
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Article
Open AccessSearch for resonances in the dilepton mass distribution in pp collisions at \( \sqrt {s} = 7 \) TeV
A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at
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Article
Open AccessSearch for physics beyond the standard model in opposite-sign dilepton events in pp collisions at \( \sqrt {s} = 7\,{\text{TeV}} \)
A search is presented for physics beyond the standard model (SM) in final states with opposite-sign isolated lepton pairs accompanied by hadronic jets and missing transverse energy. The search is performed usi...
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Article
Open AccessSearch for new physics with same-sign isolated dilepton events with jets and missing transverse energy at the LHC
The results of searches for new physics in events with two same-sign isolated leptons, hadronic jets, and missing transverse energy in the final state are presented. The searches use an integrated luminosity o...