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Showing 2011 · hep-exShow all

85 papers · 2 filters

hep-ex2011★ 448 cited

Jet energy measurement with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV

ATLAS Collaboration

The jet energy scale (JES) and its systematic uncertainty are determined for jets measured with the ATLAS detector at the LHC in proton-proton collision data at a centre-of-mass en…

hep-ex2011★ 215 cited

Measurement of inclusive jet and dijet production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector

ATLAS Collaboration

Inclusive jet and dijet cross sections have been measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector at the Large Hadron Collider. The…

hep-ex2011★ 43 cited

Search for heavy vector-like quarks coupling to light quarks in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector

ATLAS Collaboration

This letter presents a search for singly produced vector-like quarks, Q, coupling to light quarks, q. The search is sensitive to both charged current (CC) and neutral current (NC)…

hep-ex2011★ 106 cited

Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

ATLAS Collaboration

The chi_b(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider (LHC) at sqrt(s) = 7 TeV and recorded by the ATLAS detector. Using a data samp…

hep-ex2011★ 47 cited

Search for first generation scalar leptoquarks in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

ATLAS Collaboration

We report a search for first generation scalar leptoquarks using 1.03 fb^-1 of proton-proton collisions data produced by the Large Hadron Collider at sqrt(s)=7 TeV and recorded by…

hep-ex2011★ 42 cited

Measurement of D*+/- meson production in jets from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

ATLAS Collaboration

This paper reports a measurement of D*+/- meson production in jets from proton-proton collisions at a center-of-mass energy of sqrt(s) = 7 TeV at the CERN Large Hadron Collider. Th…

hep-ex2011★ 17 cited

B0 meson decays to rho0 K*0, f0 K*0, and rho-K*+, including higher K* resonances

The BABAR Collaboration

We present branching fraction measurements for the decays B0 -> rho0 K*0, B0 -> f0 K*0, and B0 -> rho- K*+, where K* is an S-wave (K pi)_0* or a K*(892) meson; we also measure B0 -…

hep-ex2011★ 85 cited

Search for scalar bottom pair production with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV

ATLAS Collaboration

The results of a search for pair production of the scalar partners of bottom quarks in 2.05 fb^-1 of pp collisions at sqrt{s} = 7 TeV using the ATLAS experiment are reported. Scala…

hep-ex2011★ 32 cited

Precision muon decay measurements and improved constraints on the weak interaction

TWIST Collaboration, A. Hillairet, R. Bayes +28

The TWIST Collaboration has completed its measurement of the three muon decay parameters ρ, δ, and P_μξ. This paper describes our determination of ρ, which governs the shape of the…

hep-ex2011★ 14 cited

Search for production of resonant states in the photon-jet mass distribution using pp collisions at sqrt(s) = 7 TeV collected by the ATLAS detector

ATLAS Collaboration

This Letter describes a model-independent search for production of new resonant states in photon-jet events in 2.11 fb^-1 of proton-proton collisions at sqrt(s) = 7 TeV. We compare…

hep-ex2011★ 57 cited

Search for the Higgs boson in the H->WW(*)->lvlv decay channel in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

ATLAS Collaboration

A search for the Higgs boson has been performed in the H->WW->lvlv channel (l=e/mu) with an integrated luminosity of 2.05/fb of pp collisions at sqrt(s) = 7 TeV collected with the…

hep-ex2011★ 62 cited

Search for extra dimensions using diphoton events in 7 TeV proton-proton collisions with the ATLAS detector

ATLAS Collaboration

Using data recorded in 2011 with the ATLAS detector at the Large Hadron Collider, a search for evidence of extra spatial dimensions has been performed through an analysis of the di…

hep-ex2011★ 39 cited

Study of Bbar --> Xu l nubar decays in BBbar events tagged by a fully reconstructed B-meson decay and determination of |V_{ub}|

The BABAR Collaboration

We report measurements of partial branching fractions for inclusive charmless semileptonic B decays Bbar --> Xu l nubar, and the determination of the CKM matrix element |V_{ub}|. T…

hep-ex2011★ 48 cited

Measurement of the production cross section for Z/gamma* in association with jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

ATLAS Collaboration

Results are presented on the production of jets of particles in association with a Z/gamma* boson, in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector. The analy…

hep-ex2011★ 54 cited

Search for the and states in and

The BABAR Collaboration, J. P. Lees

We search for the and states, reported by the Belle Collaboration, decaying to in the decays and $B^+ \to χ_{…

hep-ex2011★ 36 cited

Search for diphoton events with large missing transverse momentum in 1 fb^-1 of 7 TeV proton-proton collision data with the ATLAS detector

ATLAS Collaboration

A search for diphoton events with large missing transverse momentum has been performed using 1.07 fb^-1 of proton-proton collision data at sqrt(s) = 7 TeV recorded with the ATLAS d…

hep-ex2011★ 29 cited

Amplitude analysis and measurement of the time-dependent CP asymmetry of decays

The BABAR Collaboration, J. P. Lees

We present the first results on the Dalitz-plot structure and improved measurements of the time-dependent CP-violation parameters of the process …

hep-ex2011★ 7 cited

Search for Bbar --> Lambda_c+ X l- nu Decays in Events With a Fully Reconstructed B Meson

The BABAR Collaboration, J. P. Lees

We present a search for semileptonic B decays to the charmed baryon Lambda_c+ based on 420 fb-1 of data collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II…

hep-ex2011★ 99 cited

Search for new phenomena in final states with large jet multiplicities and missing transverse momentum using sqrt(s)=7 TeV pp collisions with the ATLAS detector

ATLAS Collaboration

Results are presented of a search for any particle(s) decaying to six or more jets in association with missing transverse momentum. The search is performed using 1.34 fb^-1 of sqrt…

hep-ex2011★ 34 cited

Search for the Decay D0 -> gamma gamma and Measurement of the Branching Fraction for D0 -> pi0 pi0

The BABAR Collaboration, J. P. Lees, others

We search for the rare decay of the meson to two photons, , and present a measurement of the branching fraction for a meson decaying to two neutra…

hep-ex2011★ 16 cited

A Measurement of the Semileptonic Branching Fraction of the B_s Meson

The BaBar Collaboration, J. P. Lees, V. Poireau +383

We report a measurement of the inclusive semileptonic branching fraction of the B_s meson using data collected with the BaBar detector in the center-of-mass (CM) energy region abov…

hep-ex2011★ 417 cited

Electron performance measurements with the ATLAS detector using the 2010 LHC proton-proton collision data

ATLAS Collaboration

Detailed measurements of the electron performance of the ATLAS detector at the LHC are reported, using decays of the Z, W and J/psi particles. Data collected in 2010 at sqrt(s)=7 T…

hep-ex2011★ 61 cited

Search for massive colored scalars in four-jet final states in sqrt{s}=7 TeV proton-proton collisions with the ATLAS detector

ATLAS Collaboration

A search for pair-produced scalar particles decaying to a four-jet final state is presented. The analysis is performed using an integrated luminosity of 34 pb^-1 recorded by the AT…

hep-ex2011★ 355 cited

Performance of the ATLAS Trigger System in 2010

The ATLAS Collaboration

Proton-proton collisions at sqrt{s} = 7 TeV and heavy ion collisions at sqrt{s_NN} = 2.76 TeV were produced by the LHC and recorded using the ATLAS experiment's trigger system in 2…