Listando Recerca por materia "53"
Mostrando ítems 81-96 de 96
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Search for D+(s) → π+μ+μ− and D+(s) → π−μ+μ+ decays
(Physics Letters B, 2013, Vol. 724, No. 4-5 (Juliol), 2013-07-23)A search for non-resonant D+(s) to pi+mu+mu- and D+(s) to pi-mu+mu+ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 1.0 fb-1, at sqrt(s) = 7 TeV ... -
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 Hidden-Sector Bosons in B0→K*0μ+μ− Decays
(Physical Review Letters, 2015, Vol. 115, No. 16 (Octubre), 2015-10-16)A search is presented for hidden-sector bosons, χ, produced in the decay B0→K∗(892)0χ, with K∗(892)0→K+π− and χ→μ+μ−. The search is performed using pp-collision data corresponding to 3.0 fb−1 collected ... -
Search for Lepton Number Violating Decays B+→π−μ+μ+ and B+→K−μ+μ+
(Physical Review Letters, 2012, Vol. 108, No. 10 (Març), 2012-03-07)A search is performed for the lepton number violating decay B+→h−μ+μ+, where h− represents a K− or a π−, using an integrated luminosity of 36 pb−1 of data collected with the LHCb detector. The decay ... -
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 the decay B0s → D*∓ π±
(Physical Review D, 2013, Vol. 87 , No.7 (Abril), 2013-04-23)A search for the decay B0s→D*∓π± is presented using a data sample corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions collected by LHCb. This decay is expected to be mediated by a ... -
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 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 ... -
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 ... -
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 NVIS Channel for USN Protocol Definition in Antarctica
(Electronics, 2020, Vol. 9, No. 6, 2020-06)Every year, the number of ubiquitous sensor networks (USN) is increasing and the need for remote USN communications is emerging in some scenarios. As an alternative to satellite communications, more ... -
Test of Lepton Universality Using B+→K+ℓ+ℓ− Decays
(Physical Review Letters, 2014, Vol. 113, No. 15 (Octubre), 2014-10-06)A measurement of the ratio of the branching fractions of the B+→K+μ+μ− and B+→K+e+e− decays is presented using proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb−1, ... -
Vertical and oblique ionospheric soundings over a very long multihop HF radio link from polar to midlatitudes: Results and relationships
(Radio Science, 2009. Vol. 44, Rs2014, 2009-04)A vertical incidence sounder (VIS) was installed at the Spanish Antarctic Base (62.7°S, 299.6°E) during the Antarctic summer survey 2004–2005. In addition, an oblique sounding (OS) system for HF ... -
Vertical and oblique ionospheric soundings over a very long multihop HF radio link from polar to midlatitudes: Results and relationships
(Radio Science, 2009. Vol. 44, Rs2014, 2009-04)A vertical incidence sounder (VIS) was installed at the Spanish Antarctic Base (62.7°S, 299.6°E) during the Antarctic summer survey 2004–2005. In addition, an oblique sounding (OS) system for HF ...