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19932026
Showing 2011 · hep-exShow all

30 papers · 2 filters

hep-ex2011★ 73 cited

Measurement of b-hadron masses

LHCb Collaboration, R. Aaij, C. Abellan Beteta +583

Measurements of b-hadron masses are performed with the exclusive decay modes B+ -> J/psi K+, B0 -> J/psi K*0, B0 -> J/psi K0S, B0_s -> J/psi phi and Lambda_b -> J/psi Lambda using…

hep-ex2011★ 36 cited

A Search for Single Photon Events in Neutrino Interactions

C. T. Kullenberg, S. R. Mishra

We present a search for neutrino-induced events containing a single, exclusive photon using data from the NOMAD experiment at the CERN SPS where the average energy of the neutrino…

hep-ex2011★ 23 cited

First observation of the decay and a measurement of the ratio of branching fractions

LHCb Collaboration, R. Aaij, C. Abellan Beteta +578

The first observation of the decay using data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated l…

hep-ex2011★ 28 cited

Search for new physics in high like-sign dilepton events at CDF~II

CDF Collaboration

We present a search for new physics in events with two high leptons of the same electric charge, using data with an integrated luminosity of 6.1 fb. The observed data…

hep-ex2011★ 1.4k cited

Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam

T2K Collaboration, K. Abe, N. Abgrall +408

The T2K experiment observes indications of appearance in data accumulated with protons on target. Six events pass all selection criteria at…

hep-ex2011★ 29 cited

Measurement of the inclusive phi cross-section in pp collisions at sqrt(s) = 7 TeV

LHCb Collaboration, R. Aaij, B. Adeva +551

The cross-section for inclusive phi meson production in pp collisions at a centre-of-mass energy of sqrt(s) = 7 TeV has been measured with the LHCb detector at the Large Hadron Col…

hep-ex2011★ 22 cited

Search for Contact Interactions in e^{\pm}p Collisions at HERA

H1 Collaboration

A search for physics beyond the Standard Model in neutral current deep inelastic scattering at high negative four-momentum transfer squared Q^2 is performed in e^{\pm}p collisions…

hep-ex2011★ 63 cited

Bounds on an anomalous dijet resonance in W+jets production in ppbar collisions at sqrt{s} =1.96 TeV

D0 Collaboration, V. Abazov

We present a study of the dijet invariant mass spectrum in events with two jets produced in association with a W boson in data corresponding to an integrated luminosity of 4.3 fb^-…

hep-ex2011★ 41 cited

Search for a Heavy Top-Like Quark in p\bar{p} Collisions at {\surd}s = 1.96 TeV

CDF Collaboration, T. Aaltonen, B. Álvarez Gonzálezv +512

We present the results of a search for pair production of a heavy top-like (t') quark decaying to Wq final states using data corresponding to an integrated luminosity of 5.6 fb-1 c…

hep-ex2011★ 42 cited

Search for First Generation Leptoquarks in ep Collisions at HERA

H1 Collaboration

A search for first generation scalar and vector leptoquarks produced in ep collisions is performed by the H1 experiment at HERA. The full H1 data sample is used in the analysis, co…

hep-ex2011★ 12 cited

Measurements of branching fractions and CP asymmetries and studies of angular distributions for B to phi phi K decays

The BABAR Collaboration, J. P. Lees

We present branching fraction and CP asymmetry measurements as well as angular studies of B to phi phi K decays using 464 x 10^6 BBbar events collected by the BaBar experiment. The…

hep-ex2011★ 31 cited

Top quark mass measurement using the template method at CDF

CDF Collaboration, T. Aaltonen

We present a measurement of the top quark mass in the lepton+jets and dilepton channels of decays using the template method. The data sample corresponds to an integrated…

hep-ex2011★ 142 cited

Invariant Mass Distribution of Jet Pairs Produced in Association with a W boson in ppbar Collisions at sqrt(s) = 1.96 TeV

CDF Collaboration, T. Aaltonen

We report a study of the invariant mass distribution of jet pairs produced in association with a W boson using data collected with the CDF detector which correspond to an integrate…

hep-ex2011★ 61 cited

Measurements of the properties of Lambda_c(2595), Lambda_c(2625), Sigma_c(2455), and Sigma_c(2520) baryons

Felix Wick

We report measurements of the resonance properties of Lambda_c(2595)+ and Lambda_c(2625)+ baryons in their decays to Lambda_c+ pi+ pi- as well as Sigma_c(2455)++,0 and Sigma_c(2520…

hep-ex2011★ 43 cited

Amplitude Analysis of B0-->K+ pi- pi0 and Evidence of Direct CP Violation in B--> K* pi decays

The BABAR Collaboration, J. P. Lees

We analyze the decay B0-->K+ pi- pi0 with a sample of 454 million B Bbar events collected by the BaBar detector at the PEP-II asymmetric-energy B factory at SLAC, and extract the c…

hep-ex2011★ 33 cited

Measurement of sin^2θ_{eff}^{lept} and Z-light quark couplings using the forward-backward charge asymmetry in p\bar{p} -> Z/γ^{*} -> e^{+}e^{-} events with L=5.0 fb^{-1} at \sqrt{s}=1.96 TeV

D0 Collaboration, V. Abazov

We measure the mass dependence of the forward-backward charge asymmetry in 157,553 interactions, corresponding to 5.0 fb of…

hep-ex2011★ 62 cited

Measurements of Direct CP Violating Asymmetries in Charmless Decays of Strange Bottom Mesons and Bottom Baryons

CDF Collaboration, T. Aaltonen

We report measurements of direct CP-violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermi…

hep-ex2011★ 23 cited

Measurement of Event Shapes in Proton-Antiproton Collisions at Center-of-Mass Energy 1.96 TeV

CDF collaboration, T. Aaltonen

A study of event shape observables in proton-antiproton collisions at 1.96 TeV is presented. The data for this analysis were recorded by the CDF II detector at the Tevatron collide…

hep-ex2011★ 17 cited

Search for Lepton Flavour Violation at HERA

H1 Collaboration

A search for second and third generation scalar and vector leptoquarks produced in ep collisions via the lepton flavour violating processes ep -> mu X and ep -> tau X is performed…

hep-ex2011★ 33 cited

Search for Production of Heavy Particles Decaying to Top Quarks and Invisible Particles in collisions at TeV

CDF Collaboration

We present a search for a new particle decaying to top quark via , where is an invisible particle. In a data sample with 4.8 fb of int…

hep-ex2011★ 46 cited

Measurement of spin correlation in ttbar production using dilepton final states

D0 Collaboration, V. Abazov et al.

We measure the correlation between the spin of the top quark and the spin of the anti-top quark in (ttbar -> W+ W- b bbar -> l+ nu b l- nubar bbar) final states produced in ppbar c…

hep-ex2011★ 2 cited

First observation of Bs -> D_{s2}^{*+} X mu nu decays

LHCb Collaboration, R. Aaij, B. Adeva +586

Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the semileptonic decays Bs -> Ds+ X mu nu and Bs -> D0 K+ X mu nu are d…

hep-ex2011★ 54 cited

First Measurement of the Angular Coefficients of Drell-Yan pairs in the Z Mass Region from Collisions at = 1.96 TeV

CDF Collaboration, T. Aaltonen

We report on the first measurement of the angular distributions of final state electrons in events produced in the boson mass region at $\…

hep-ex2011★ 26 cited

Observation of eta_c(1S) and eta_c(2S) decays to K+ K- pi+ pi- pi0 in two-photon interactions

The BABAR Collaboration, P. del Amo Sanchez

We study the processes gamma gamma -> K^0_S K pi and gamma gamma -> K+ K- pi+ pi- pi0 using a data sample of 519.2 fb-1 recorded by the BaBar detector at the PEP-II asymmetric-ener…