44 Result(s)
within
English
Elementary Particles, Quantum Field Theory
**-Pin Li
Physics
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Article
Open AccessSearch for flavour-changing neutral current top quark decays t → Hq in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector
A search for flavour-changing neutral current decays of a top quark to an uptype quark (q = u, c) and the Standard Model Higgs boson, where the Higgs boson decays to
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Open AccessMeasurement of the differential cross section for top quark pair production in pp collisions at \(\sqrt{s} = 8\,\text {TeV} \)
The normalized differential cross section for top quark pair ( \({\mathrm{t}}\overline{{\mathrm{t}}}\) ...
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Article
Open AccessFermionic phase transition induced by the effective impurity in holography
We investigate the holographic fermionic phase transition induced by the effective impurity in holography, which is introduced by massless scalar fields in EinsteinMaxwell-massless scalar gravity. We obtain a ...
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Open AccessSearch for disappearing tracks in proton-proton collisions at \( \sqrt{s}=8 \) TeV
A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. Disappearing tracks are identified as those with little or no associ...
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Open AccessMeasurement of the ratio of the production cross sections times branching fractions of B c ± → J/ψπ ± and B± → J/ψK ± and \( \mathrm{\mathcal{B}}\left({\mathrm{B}}_{\mathrm{c}}^{\pm}\to \mathrm{J}/\psi {\pi}^{\pm }{\pi}^{\pm }{\pi}^{\mp}\right)/\mathrm{\mathcal{B}}\left({\mathrm{B}}_{\mathrm{c}}^{\pm}\to \mathrm{J}/\psi {\pi}^{\pm}\right) \) in pp collisions at \( \sqrt{s}=7 \) TeV
The ratio of the production cross sections times branching fractions ...
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Open AccessObservation of the diphoton decay of the Higgs boson and measurement of its properties
Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in pro...
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Open AccessStudy of the production of charged pions, kaons, and protons in pPb collisions at \(\sqrt{s_{NN}} =\; \) 5.02 \(\,\text {TeV}\)
Spectra of identified charged hadrons are measured in pPb collisions with the CMS detector at the LHC at $$\sqrt{s_{NN}} =5.02\,\text ...
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Open AccessMeasurement of associated W + charm production in pp collisions at \( \sqrt{s} \) = 7 TeV
Measurements are presented of the associated production of a W boson and a charm-quark jet (W + c) in pp collisions at a center-of-mass energy of 7 TeV. The analysis is conducted with a data sample correspondi...
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Open AccessJet and underlying event properties as a function of charged-particle multiplicity in proton–proton collisions at \(\sqrt {s}= 7\ \text{TeV}\)
Characteristics of multi-particle production in proton-proton collisions at \(\sqrt{s}=7\ \mbox{TeV}\) are studied as a function ...
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Open AccessMeasurement of the \( \Lambda_{\mathrm{b}}^0 \) lifetime in pp collisions at \( \sqrt{s}=7 \) TeV
A measurement of the \( \Lambda_{\mathrm{b}}^0 \) lifetime using the decay ...
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Open AccessMeasurement of masses in the \(\mathrm{t}\overline{\mathrm{t}}\) system by kinematic endpoints in pp collisions at \(\sqrt{s}=7\ \mathrm{TeV}\)
A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for \(\mathrm{t}\overline{\mathrm{t}} \) ev...
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Open AccessObservation of a new boson with mass near 125 GeV in pp collisions at \( \sqrt{s}=7 \) and 8 TeV
A detailed description is reported of the analysis used by the CMS Collaboration in the search for the standard model Higgs boson in pp collisions at the LHC, which led to the observation of a new boson. The d...
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Open AccessStudy of the underlying event at forward rapidity in pp collisions at \( \sqrt{s}=0.9,2.76,\;\mathrm{and}\;7\;\mathrm{TeV} \)
The underlying event activity in proton-proton collisions at forward pseudo-rapidity (−6.6 < η < −5.2) is studied with the CMS detector at the LHC, using a novel observable: the ratio of the forward energy densit...
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Article
Open AccessSearch for heavy quarks decaying into a top quark and a W or Z boson using lepton + jets events in pp collisions at \( \sqrt{s}=7 \) TeV
Results are presented from a search for the pair-production of heavy quarks, \( \mathrm{Q}\overline{\mathrm{Q}} \) , that decay exclusively into a top quark and a W or Z boson. The se...
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Open AccessSearch for narrow resonances and quantum black holes in inclusive and b-tagged dijet mass spectra from pp collisions at \( \sqrt{s}=7 \) TeV
A search for narrow resonances and quantum black holes is performed in inclusive and b-tagged dijet mass spectra measured with the CMS detector at the LHC. The data set corresponds to 5 fb−1 of integrated luminos...
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Measurement of the top-quark mass in \(\mathrm{t}\overline{\mathrm{t}}\) events with dilepton final states in pp collisions at \(\sqrt{s}=7\ \mbox{TeV}\)
The top-quark mass is measured in proton-proton collisions at \(\sqrt{s} = 7\ \mbox{TeV}\) using a data sample correspo...
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Open AccessStudy of the inclusive production of charged pions, kaons, and protons in pp collisions at \(\sqrt{s} = 0.9, 2.76,\mbox{ and }7~\mbox{TeV}\)
Spectra of identified charged hadrons are measured in pp collisions at the LHC for \(\sqrt{s} = 0.9, 2.76,\mbox{ and } 7~\mbox{TeV}\) ...
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Open AccessMeasurement of the underlying event in the Drell–Yan process in proton–proton collisions at \(\sqrt{s} = 7~\mbox{TeV}\)
A measurement of the underlying event (UE) activity in proton–proton collisions at a center-of-mass energy of 7 TeV is performed using Drell–Yan events in a data sample corresponding to an integrated luminosit...
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Open AccessMeasurement of the mass difference between top and antitop quarks
A measurement of the mass difference between the top and the antitop quark (Δm t = m t − ...
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Open AccessSearch for supersymmetry in pp collisions at \( \sqrt {s} = 7 \) TeV in events with a single lepton, jets, and missing transverse momentum
Results are reported from a search for physics beyond the standard model in proton-proton collisions at a center-of-mass energy of 7 TeV, focusing on the signature with a single, isolated, high-transverse-mome...
