Showing 2012 · hep-exShow all

44 papers · 2 filters

hep-ex2012★ 69 cited

Leading and Next-to-Leading Order Gluon Polarisation in the Nucleon and Longitudinal Double Spin Asymmetries from Open Charm Muoproduction

C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +217

The gluon polarisation in the nucleon was measured using open charm production by scattering 160 GeV/c polarised muons off longitudinally polarised protons or deuterons. The data w…

hep-ex2012★ 7 cited

D* and D Meson Production in Muon Nucleon Interactions at 160 GeV/c

C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +217

The production of D* and D mesons in inelastic scattering of 160 GeV/c muons off a ^6LiD target has been investigated with the COMPASS spectrometer at CERN for 0.003 (GeV/c)^2 < Q^…

hep-ex2012★ 14 cited

Measurement of the inclusive semileptonic branching fraction at Belle

Belle Collaboration, C. Oswald, P. Urquijo +172

We report a measurement of the inclusive semileptonic branching fraction in a data sample collected near the resonance with the Belle detector at the…

hep-ex2012★ 22 cited

Search for CP Violation in the Decay

B. R. Ko, E. Won, I. Adachi +142

We search for CP violation in the decay using a data sample with an integrated luminosity of 977 fb collected with the Belle detector at the KEKB…

hep-ex2012★ 83 cited

Measurement of the Atmospheric flux in IceCube

IceCube Collaboration, M. G. Aartsen, R. Abbasi +274

We report the first measurement of the atmospheric electron neutrino flux in the energy range between approximately 80 GeV and 6 TeV, using data recorded during the first year of o…

hep-ex2012★ 23 cited

Study of B^0 -> rho^0 rho^0 decays, implications for the CKM angle phi_2 and search for other B^0 decay modes with a four-pion final state

The Belle Collaboration, P. Vanhoefer, J. Dalseno +171

We present a study of the branching fraction of the decay B^0->rho0rho0 and the fraction of longitudinally polarized rho0 mesons in this decay. The results are obtained from the fi…

hep-ex2012★ 68 cited

Observation of ψ(4040) and ψ(4160) decay into ηJ/ψ

Belle Collaboration, X. L. Wang, Y. L. Han +126

The cross section for e^+e^- \to ηJ/ψbetween \sqrt{s}=3.8 GeV/c^2 and 5.3 GeV/c^2 is measured via initial state radiation using 980 fb^{-1} of data on and around the Υ(nS)(n=1,2,3,…

hep-ex2012★ 8 cited

Study of the Hadronic Transitions (2S)(1S) at Belle

Belle Collaboration, U. Tamponi, R. Mussa +131

We study the rare hadronic transitions and using a sample of 158 decays collected with the Belle detecto…

hep-ex2012★ 34 cited

Direct Measurement of Backgrounds using Reactor-Off Data in Double Chooz

Y. Abe, C. Aberle, J. C. dos Anjos +170

Double Chooz is unique among modern reactor-based neutrino experiments studying disappearance in that data can be collected with all reactors off. In this paper, we pres…

hep-ex2012★ 72 cited

Measurements of Branching Fractions and Direct CP Asymmetries for B -> K pi, B->pi pi and B->to KK Decays

Y. -T. Duh, T. -Y. Wu, P. Chang +140

We report measurements of the branching fractions and direct CP asymmetries (A_{CP}) for B->K pi, pi pi and KK decays (but not pi^0 pi^0) based on the final data sample of 772x10^6…

hep-ex2012★ 66 cited

First Test of Lorentz Violation with a Reactor-based Antineutrino Experiment

Double Chooz Collaboration, Y. Abe, C. Aberle +164

We present a search for Lorentz violation with 8249 candidate electron antineutrino events taken by the Double Chooz experiment in 227.9 live days of running. This analysis, featur…

hep-ex2012★ 374 cited

Reactor electron antineutrino disappearance in the Double Chooz experiment

Y. Abe, C. Aberle, J. C. dos Anjos +162

The Double Chooz experiment has observed 8,249 candidate electron antineutrino events in 227.93 live days with 33.71 GW-ton-years (reactor power x detector mass x livetime) exposur…

hep-ex2012

Hybrid Mesons

Bernhard Ketzer

The SU(3)_flavor constituent quark model has been quite successful to explain the properties as well as the observed spectrum of mesons with pseudoscalar and vector quantum numbers…

hep-ex2012★ 287 cited

Implications of LHCb measurements and future prospects

LHCb collaboration, A. Bharucha, I. I. Bigi +763

During 2011 the LHCb experiment at CERN collected 1.0 fb-1 of sqrt{s} = 7 TeV pp collisions. Due to the large heavy quark production cross-sections, these data provide unprecedente…

hep-ex2012★ 40 cited

Precise measurement of the branching fractions for Bs->Ds(*)+ Ds(*)- and first measurement of the Ds*+ Ds*- polarization using e+e- collisions

S. Esen, A. J. Schwartz, H. Aihara +137

We have made a precise measurement of the absolute branching fractions of Bs->Ds(*)+ Ds(*)- decays using 121.4 fb-1 of data recorded by the Belle experiment running on the Upsilon(…

hep-ex2012★ 46 cited

Measurement of CNGS muon neutrino speed with Borexino

Borexino Collaboration

We have measured the speed of muon neutrinos with the Borexino detector using short-bunch CNGS beams. The final result for the difference in time-of-flight between a <E>=17 GeV muo…

hep-ex2012★ 10 cited

Search for B -> phi pi decays

Belle collaboration, J. H. Kim, M. Nakao +149

We report on a search for the charmless decays and that are strongly suppressed in the Standard Model. The analysis is based on a data sample of…

hep-ex2012★ 7 cited

Evidence for B- -> Ds+ K- l- nubar and search for B- -> Ds*+ K- l- nubar

Belle Collaboration, J. Stypula, M. Rozanska +165

We report measurements of the decays B- -> Ds(*)+ K- l- nubar in a data sample containing 657x10^6 BBbar pairs collected with the Belle detector at the KEKB asymmetric-energy e+e-…

hep-ex2012★ 6 cited

First observation of CP violation and improved measurement of the branching fraction and polarization of B0 -> D*+ D*- decays

Belle Collaboration, B. Kronenbitter, I. Adachi +160

We report the measurement of the branching fraction, the polarization, and the parameters of the time-dependent CP violation in B0 -> D*+ D*- decays using a data sample of 772 mill…

hep-ex2012★ 21 cited

Exclusive rho^0 muoproduction on transversely polarised protons and deuterons

C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +217

The transverse target spin azimuthal asymmetry A_UT in hard exclusive production of rho^0 mesons was measured at COMPASS by scattering 160 GeV/c muons off transversely polarised pr…

hep-ex2012★ 9 cited

Measurement of the Cross Section for High-p_T Hadron Production in Scattering of 160 GeV/c Muons off Nucleons

C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +209

The differential cross section for production of charged hadrons with high transverse momenta in scattering of 160\,GeV/ muons off nucleons at low photon virtualities has been m…

hep-ex2012★ 20 cited

First study of η_c, η(1760) and X(1835) production via η'π^+π^- final states in two-photon collisions

Belle Collaboration, C. C. Zhang, H. Aihara +101

The invariant mass spectrum of the η' π^+ π^- final state produced in two-photon collisions is obtained using a 673 fb^{-1} data sample collected in the vicinity of the Υ(4S) reson…

hep-ex2012★ 17 cited

Search for decays to invisible final states at Belle

Belle Collaboration, C. -L. Hsu, P. Chang +154

We report a search for decays into invisible final states using a data sample of pairs collected at the resonance with the Belle dete…

hep-ex2012★ 59 cited

Search for Lepton-Flavor-Violating and Lepton-Number-Violating tau to lhh' Decay Modes

Y. Miyazaki, I. Adachi, H. Aihara +128

We search for lepton-flavor-violating and lepton-number-violating tau decays into a lepton (l = electron or muon) and two charged mesons (h, h' = pion or Kaon) using 854 fb^{-1} of…