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Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at √s=7 TeV
(Springer Science and Business Media LLC, 2012)
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 ...
Performance of τ-lepton reconstruction and identification in CMS
(IOP Publishing, 2012-01-01)
The performance of τ-lepton reconstruction and identification algorithms is studied using a data sample of proton-proton collisions at s = 7 TeV, corresponding to an integrated luminosity of 36 pb-1 collected with the CMS ...
Measurement of jet fragmentation into charged particles in pp and PbPb collisions at √sNN = 2.76 TeV
(Springer Science and Business Media LLC, 2012)
Jet fragmentation in pp and PbPb collisions at a centre-of-mass energy of 2.76TeV per nucleon pair was studied using data collected with the CMS detector at the LHC. Fragmentation functions are constructed using charged-particle ...
Measurement of the relative prompt production rate of χ[subscript c2] and χ[subscript c1] in pp collisions at √s = 7TeV
(Springer-Verlag, 2012-11)
A measurement is presented of the relative prompt production rate of χ[subscript c2] and χ[subscript c1] with 4.6 fb[superscript −1] of data collected by the CMS experiment at the LHC in pp collisions at √s = 7 TeV. The ...
Measurement of the top-quark mass in t[bar over t] events with dilepton final states in pp collisions at s√=7 TeV
(Springer-Verlag, 2012-10)
The top-quark mass is measured in proton-proton collisions at s√=7 TeV using a data sample corresponding to an integrated luminosity of 5.0 fb[superscript −1] collected by the CMS experiment at the LHC. The measurement is ...
Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at √s = 7 TeV
(Springer-Verlag, 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[superscript −1] sample of proton-proton collisions at a centre-of-mass ...
Exclusive γγ → μ⁺μ⁻ production in proton-proton collisions at √s = 7 TeV
(Springer Berlin Heidelberg, 2012-01)
A measurement of the exclusive two-photon production of muon pairs in proton-proton collisions at √s = 7 TeV, pp → pμ⁺μ⁻ p, is reported using data corresponding to an integrated luminosity of 40 pb⁻¹. For muon pairs with ...
Measurement of the single-top-quark t-channel cross section in pp collisions at √s = 7 TeV
(Springer Nature, 2012-12)
A measurement of the single-top-quark t-channel production cross section in pp collisions at √s=7 TeV with the CMS detector at the LHC is presented. Two different and complementary approaches have been followed. The first ...
J/ψ and ψ(2S) production in pp collisions at √s = 7 Tev
(Springer Berlin Heidelberg, 2012-02)
A measurement of the J/ ψ and ψ (2S) production cross sections in pp collisions at √s = 7TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb ⁻¹. Using a fit ...
Observation of Sequential Υ Suppression in PbPb Collisions
(American Physical Society, 2012-11)
The suppression of the individual Υ(nS) states in PbPb collisions with respect to their yields in pp data has been measured. The PbPb and pp data sets used in the analysis correspond to integrated luminosities of ...