Listando La Salle por materia "Col·lisions (Física nuclear)"
Mostrando ítems 181-200 de 219
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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 ... -
Search for long-lived particles decaying to jet pairs
(The European Physical Journal C, 2015, Vol. 75, no. 4 (Abril), 2015-04-17)A search is presented for long-lived particles with a mass between 25 and 50 GeV/c2 and a lifetime between 1 and 200ps in a sample of proton–proton collisions at a centre-of-mass energy of s√=7 TeV, ... -
Search for Majorana Neutrinos in B−→π+μ−μ− Decays
(Physical Review Letters, 2014, Vol. 112, No. 13 (Abril), 2014-04-03)A search for heavy Majorana neutrinos produced in the B−→π+μ−μ− decay mode is performed using 3 fb−1 of integrated luminosity collected with the LHCb detector in pp collisions at center-of-mass energies ... -
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 decay D0→π+π−μ+μ−
(Physics Letters B , 2014, Vol. 728, (Gener), 2014-01-20)A search for the D0→π+π−μ+μ− decay, where the muon pair does not originate from a resonance, is performed using proton–proton collision data corresponding to an integrated luminosity of 1.0 fb−1 recorded ... -
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 flavour violating decay τ − → μ − μ + μ −
(Journal of High Energy Physics, 2015, Vol. 2015, No.2 (Febrer), 2015-02-18)A search for the lepton flavour violating decay τ − → μ − μ + μ − is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of 1.0 fb−1 of proton-proton collisions ... -
Search for the rare decay D0 → μ+μ−
(Physics Letters B , 2013, Vol. 725, No.1-3 (Agost), 2013-08-09)A search for the rare decay D-0 -> mu(+) mu(-) is performed using a data sample, corresponding to an integrated luminosity of 0.9 fb(-1), of pp collisions collected at a centre-of-mass energy of 7 TeV ... -
Search for the rare decay K0S → μ+μ−
(Journal of High Energy Physics, 2013, Vol. 2013, No.1 (gener), 2013-01-13)A search for the decay K0S→μ+μ− is performed, based on a data sample of 1.0 fb−1 of pp collisions at s√=7TeV collected by the LHCb experiment at the Large Hadron Collider. The observed number of candidates ... -
Search for the rare decays B0 → J/ψγ and B0s → J/ψγ
(Physical Review D, 2015, Vol. 92, No. 11 (Desembre), 2015-12-07)A search for the rare decay of a B0 or B0s meson into the final state J/ψγ is performed, using data collected by the LHCb experiment in pp collisions at √s=7 and 8 TeV, corresponding to an integrated ... -
Search for the rare decays B0s → μ+ μ− and B0 → μ+ μ-
(Physics Letters B , 2011, Vol. 699, No.5 (Maig), 2011-05-23)A search for the decays B0s →μ+μ− and B0→μ+μ− is performed with about 37 pb−1 of pp collisions at √ s = 7 TeV collected by the LHCb experiment at the Large Hadron Collider at CERN. The observed numbers ... -
Search for the X(4140) state in B+ → J/ψϕK+ decays
(Physical Review D, 2011, Vol. 85 , No.9 (Maig), 2012-05-04)A search for the X(4140) state in B+→J/ψϕK+ decays is performed with 0.37 fb−1 of pp collisions at √s=7 TeV collected by the LHCb experiment. No evidence for this state is found, in 2.4σ disagreement ... -
Search for the Λ 0b → Λη ′ and Λ 0b → Λη decays with the LHCb detector
(Journal of High Energy Physics, 2015, Vol. 2015, No.6 (Setembre), 2015-09-01)A search is performed for the as yet unobserved baryonic Λ 0b → Λη ′ and Λ 0b → Λη decays with 3 fb−1 of proton-proton collision data recorded by the LHCb experiment. The B0 → K 0s η ′ decay is used ... -
Searches for B0(s) →J/ψpp¯¯¯ and B + → J/ψ p p¯¯¯ π + decays
(Journal of High Energy Physics, 2013, Vol. 2013, No. (Setembre), 2013-09-02)The results of searches for B0(s)→J/ψ pp¯¯¯ and B + → J/ψ p p¯¯¯π+ decays are reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions, ... -
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 ... -
Searches for violation of lepton flavour and baryon number in tau lepton decays at LHCb
(Physics Letters B , 2013, Vol. 724, No. 1-3 (Juliol, 2013), 2013-07-09)Searches for the lepton flavour violating decay $\tau^-\rightarrow \mu^-\mu^+\mu^-$ and the lepton flavour and baryon number violating decays $\tau^-\rightarrow \bar{p}\mu^+\mu^-$ and $\tau^-\rightarrow ... -
Strong Constraints on the Rare Decays B0s→μ+μ− and B0→μ+μ−
(Physical Review Letters, 2012, Vol. 108, No. 23 (Juny), 2012-06-05)A search for B0s→μ+μ− and B0→μ+μ− decays is performed using 1.0 fb−1 of pp collision data collected at √s=7 TeV with the LHCb experiment at the Large Hadron Collider. For both decays, the number of ... -
Studies of beauty baryon decays to D0ph− and Λ+ch− final states
(Physical Review D, 2014, Vol. 89 , No.3 (Febrer), 2014-02-13)Decays of beauty baryons to the D0ph− and Λ+ch− final states (where h indicates a pion or a kaon) are studied using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb−1, ... -
Studies of the decays B+→p¯ph+ and observation of B+→¯¯¯Λ(1520)p
(Physical Review D, 2013, Vol. 88 , No.5 (Setembre), 2013-09-19)Dynamics and direct CP violation in three-body charmless decays of charged B mesons to a proton, an antiproton and a light meson (pion or kaon) are studied using data, corresponding to an integrated ... -
Study of B0(s)→K0Sh+h′− decays with first observation of B0s→K0SK±π∓ and B0s→K0Sπ+π−
(Journal of High Energy Physics, 2013, Vol. 2013, No.10 (Octubre), 2013-10-22)