Listando La Salle por materia "Interaccions d'hadrons"
Mostrando ítems 21-40 de 40
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Measurement of ψ(2S) meson production in pp collisions at s√=7 TeV
(The European Physical Journal C, 2012, Vol. 72, No. 2100, 2012-08)The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at √s = 7 TeV has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity ... -
Measurements of the branching fractions of B+ → ppK¯ + decays
(The European Physical Journal C, 2013, Vol. 73, No. 2462, 2013-06)The branching fractions of the decay B+ → ppK¯ + for different intermediate states are measured using data, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment. The ... -
Observation of a New Excited D+s Meson in B0→D−D+K+π− Decays
(Physical Review Letters, 2021, Vol. 126, 2021-03)Using pp collision data corresponding to an integrated luminosity of 5.4 fb−1 collected with the LHCb detector at a center-of-mass energy of 13 TeV, the B0→D−D+K+π− decay is studied. A new excited D+s ... -
Observation of a new Ξ0b state
(Physical Review D, 2021, Vol. 103, 2021-01)Using a proton-proton collision data sample collected by the LHCb experiment, corresponding to anintegrated luminosity of8.5fb−1, the observation of a new excitedΞ0bresonance decaying to theΞ−bπþfinal ... -
Observation of B0s→χc1φ decay and study of B0→χ c1,2K∗0 decays
(Nuclear Physics B, 2013, Vol. 874, No. 3, 2013-09)The first observation of the decay B0s→χc1φ and a study of B0→χc1,2K∗0 decays are presented. The analysis is performed using a dataset, corresponding to an integrated luminosity of 1.0 fb−1, collected ... -
Observation of CP violation in two-body B0(s) -meson decays to charged pions and kaons
(Journal of High Energy Physics, 2021, No. 75, 2021-03)The time-dependent CP asymmetries of B0 → π+π− and B0s → K+K− decays are measured using a data sample of pp collisions corresponding to an integrated luminosity of 1.9 fb−1, collected with the LHCb ... -
Observation of Multiplicity Dependent Prompt χc1(3872) and ψ(2S) Production in pp Collisions
(Physical Review Letters, 2021, Vol. 126, 2021-03)The production of χc1(3872) and ψ(2S) hadrons is studied as a function of charged particle multiplicity in pp collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity ... -
Observation of the B0 s → J/ψ K0 SK±π ∓ decay
(Journal of High Energy Physics, 2014, No. 140, 2014-07)Decays of the form B0 (s) → J/ψ K0 S h +h (0)− (h (0) = K, π) are searched for in proton-proton collision data corresponding to an integrated luminosity of 1.0 fb−1 recorded with the LHCb detector. The ... -
Observation of the B0s → D*±D∓ decay
(Journal of High Energy Physics, 2021, Vol.3, No. 99, 2021-03)A search for the B0s → D*±D∓ decay is performed using proton-proton collision data at centre-of-mass energies of 7, 8 and 13 TeV collected by the LHCb experiment, corresponding to an integrated luminosity ... -
Observation of the decay Λ0b → χc1pπ−
(Journal of High Energy Physics, 2021, Vol.5, No. 95, 2021-05)The Cabibbo-suppressed decay Λ0b → χc1pπ− is observed for the first time using data from proton-proton collisions corresponding to an integrated luminosity of 6 fb−1, collected with the LHCb detector ... -
Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data
(Nature, 2015, Vol. 522, 2015-05)The standard model of particle physics describes the fundamental particles and their interactions via the strong, electromagnetic and weak forces. It provides precise predictions for measurable quantities ... -
Observations of B0 s → ψ(2S)η and B0 (s) → ψ(2S)π+π− decays
(Nuclear Physics B, 2013, Vol. 871, No. 3, 2013-06)First observations of the B0s→ψ(2S)η,B0→ψ(2S)π+π− and B0s→ψ(2S)π+π− decays are made using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in proton–proton ... -
Search for CP violation in D+(s)→h+π0 and D+(s)→h+η decays
(Journal of High Energy Physics, 2021, Vol.6, No. 19, 2021-06)Searches for CP violation in the two-body decays D+(s)→h+π0 and D+(s)→h+η (where h+ denotes a π+ or K+ meson) are performed using pp collision data collected by the LHCb experiment corresponding to ... -
Search for long-lived particles decaying to e ± μ∓ ν
(European Physical Journal C, 2021, Vol. 81, No. 261, 2021-03)Long-lived particles decaying to e±μ∓ν, with masses between 7 and 50GeV/c2 and lifetimes between 2 and 50ps, are searched for by looking at displaced vertices containing electrons and muons of opposite ... -
Search for Rare B 0 ( s ) → μ + μ − μ + μ − Decays
(Physical Review Letters, 2013, Vol. 110, No. 21, 2013-05)A search for the decays B 0 s → μ + μ − μ + μ − and B 0 → μ + μ − μ + μ − is performed using data, corresponding to an integrated luminosity of 1.0 fb − 1 , collected with the LHCb detector in ... -
Search for the doubly charmed baryon Ξ+ cc
(Journal of High Energy Physics, 2013, No. 90, 2013-12)A search for the doubly charmed baryon Ξ+ cc in the decay mode Ξ+ cc→ Λ + c K−π + is performed with a data sample, corresponding to an integrated luminosity of 0.65 fb−1 , of pp collisions recorded at ... -
Search for the Lepton-Flavor-Violating Decays B 0 s → e ± μ ∓ and B 0 → e ± μ ∓
(Physical Review Letters, 2013, Vol. 111, No. 14, 2013-09)A search for the lepton-flavor-violating decays B 0 s → e ± μ ∓ and B 0 → e ± μ ∓ is performed with a data sample, corresponding to an integrated luminosity of 1.0 fb − 1 of p p collisions ... -
Searches for 25 rare and forbidden decays of D+ and D+s mesons
(Journal of High Energy Physics, 2021, Vol.6, No. 44, 2021-06)A search is performed for rare and forbidden charm decays of the form D+(s)→h±ℓ+ℓ(′)∓, where h± is a pion or kaon and ℓ(′)± is an electron or muon. The measurements are performed using proton-proton ... -
Study of B0 s → J/ψπ+π −K+K− decays
(Journal of High Energy Physics, 2021, No. 24, 2021-02)The decays B 0 s → J/ψπ+π −K+K− are studied using a data set corresponding to an integrated luminosity of 9 fb−1 , collected with the LHCb detector in proton-proton collisions at centre-of-mass energies ... -
Study of B0s → J/ψπ+π−K+K− decays
(Journal of High Energy Physics, 2021, No. 24, 2021-02)The decays B0s → J/ψπ+π−K+K− are studied using a data set corresponding to an integrated luminosity of 9 fb−1, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of ...