Visualitzant Articles publicats en revistes per matèria "Hadrons"
Ara mostrant els elements 1-14 de 14
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A study of the Z production cross-section in pp collisions at s√=7TeV using tau final states
(Journal of High Energy Physics, 2013, Vol. 2013, No.1 (Gener), 2013-01-16)A measurement of the inclusive Z → ττ cross-section in pp collisions at s√=7TeV is presented based on a dataset of 1.0 fb−1 collected by the LHCb detector. Candidates for Z → τ τ decays are identified ... -
Addendum: Observation of double charm production involving open charm in pp collisions at√s= 7 TeV
(Journal of High Energy Physics, 2041, Vol. 2014, No.3 (Març), 2014-03-24) -
First Measurement of the Charge Asymmetry in Beauty-Quark Pair Production
(Physical Review Letters, 2014, Vol. 113, No. 8 (Agosto), 2014-08-20)The difference in the angular distributions between beauty quarks and antiquarks, referred to as the charge asymmetry, is measured for the first time in b¯b pair production at a hadron collider. The ... -
Implications of LHCb measurements and future prospects
(The European Physical Journal C, 2013, Vol. 73, no. 4 (Abril), 2013-04-26)During 2011 the LHCb experiment at CERN collected 1.0 fb−1 of s√=7~TeV pp collisions. Due to the large heavy quark production cross-sections, these data provide unprecedented samples of heavy flavoured ... -
Limits on neutral Higgs boson production in the forward region in pp collisions at s√=7 TeV
(Journal of High Energy Physics, 2013, Vol. 2013, No.5 (Maig), 2013-05-27)Limits on the cross-section times branching fraction for neutral Higgs bosons, produced in pp collisions at s√=7 TeV, and decaying to two tau leptons with pseudorapidities between 2.0 and 4.5, are ... -
Measurement of b-hadron branching fractions fortwo-body decays into charmless charged hadrons
(Journal of High Energy Physics, 2012, Vol. 2012, No.10 (Octubre), 2012-10-04)Based on data corresponding to an integrated luminosity of 0.37 fb−1 collected by the LHCb experiment in 2011, the following ratios of branching fractions are measured: $ B(B0→π+π−)/B(B0→K+π−)=0.262±0 ... -
Measurement of b-hadron masses
(Physics Letters B , 2012, Vol. 708, No. 3 -5 (Febrer), 2012-02-28)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 an integrated luminosity ... -
Measurement of sigma(pp -> b anti-b X) at sqrt(s)=7 TeV in the forward region
(Physics Letters B, Vol. 694, No. 3 (Novembre 2010), 2010)Decays of b hadrons into final states containing a Dº meson and a muon are used to measure the bb production cross-section in proton–proton collisions at a centre-of-mass energy of 7 TeV at the LHC. In ... -
Measurement of the ηc(1S) production cross-section in proton–proton collisions via the decay ηc(1S)→pp¯¯¯
(The European Physical Journal C, 2015, Vol. 75, no. 7 (Juliol), 2015-07-04)High centre-of-mass energies available in proton-proton collisions at the LHC allow models describing charmonium production to be tested. We distinguish promptly produced charmonia from those originating ... -
Measurement of σ(pp → bb X) at √s = 7 TeV in the forward region
(Physics Letters B , 2010, Vol. 694, No. 3 (Novembre), 2010-11-08)Decays of b hadrons into final states containing a D0 meson and a muon are used to measure the bb production cross-section in proton–proton collisions at a centre-of-mass energy of 7 TeV at the LHC. In ... -
Search for direct CP violation in D0 → h−h+ modes using semileptonic B decays
(Physics Letters B, 2013, Vol. 723, No. 1-3 (Juny), 2013-06-10)A search for direct CP violation in D0 -> h- h+ (where h=K or pi) is presented using data corresponding to an integrated luminosity of 1.0 fb^-1 collected in 2011 by LHCb in pp collisions at a centre-of-mass ... -
Searches for Majorana neutrinos in B− decays
(Physical Review D, 2012, Vol. 85 , No.11 (Juny), 2012-06-11)Searches for heavy Majorana neutrinos in B− decays in final states containing hadrons plus a μ−μ− pair have been performed using 0.41 fb−1 of data collected with the LHCb detector in proton-proton ... -
Study of Beauty Hadron Decays into Pairs of Charm Hadrons
(Physical Review Letters, 2014, Vol. 112, No. 20 (Maig), 2014-05-21)First observations of the decays Λ0b→Λ+cD−(s) are reported using data corresponding to an integrated luminosity of 3 fb−1 collected at 7 and 8 TeV center-of-mass energies in proton-proton collisions ... -
Study of the kinematic dependences of Λ 0b production in pp collisions and a measurement of the Λ 0b → Λ +c π − branching fraction
(Journal of High Energy Physics, 2014, Vol. 2014, No.8 (Agost), 2014-08-26)The kinematic dependences of the relative production rates, fΛ0b/fd, of Λ 0b baryons and B 0 mesons are measured using Λ 0b → Λ +c π − and B¯¯¯¯0 →D+π− decays. The measurements use proton-proton ...