DAU - Arxiu Digital de la URL: Recent submissions
Now showing items 1741-1760 of 3858
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First measurement of time-dependent CP violation in B0s→K+K− decays
(Journal of High Energy Physics, 2013, Vol. 2013, No.10 (Octubre), 2013-10-25)Direct and mixing-induced CP-violating asymmetries in B0s→K+K− decays are measured for the first time using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb−1, collected ... -
Measurements of the branching fractions of the decays B0s→D∓sK± and B0s→D−sπ+
(Journal of High Energy Physics, 2012, Vol. 2012, No.6 (Juny), 2012-06-20)The decay mode B0s→D∓sK± allows for one of the theoretically cleanest measurements of the CKM angle γ through the study of time-dependent CP violation. This paper reports a measurement of its branching ... -
Measurement of CP asymmetries and polarisation fractions in B0s→K∗0K¯¯¯¯¯∗0 decays
(Journal of High Energy Physics, 2015, Vol. 2015, No.7 (Juliol), 2015-07-30)An angular analysis of the decay B0s→K∗0K¯¯¯¯¯∗0 is performed using pp collisions corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment at a centre-of-mass energy s√=7 ... -
A Three Methods Proactive Improvement Model for Buildings Construction Processes
(Sustainability, 2020, Vol. 12, No 10, 2020-05)This paper proposes a proactive model to improve the overall performance of constructionprocesses. The main advantage is that potential waste and associate impacts could be identified in theearly stages ... -
First observation of the decay B+c → J/ψ K+
(Journal of High Energy Physics, 2013, Vol. 2013, No.9 (Setembre), 2013-09-13)The decay B+c→J/ψK+ is observed for the first time using a data sample, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment in pp collisions at a centre-of-mass energy ... -
Determination of the branching fractions of B 0S → D ∓S K ∓ and B 0 → D −S K +
(Journal of High Energy Physics, 2015, Vol. 2015, No.19 (Abril), 2015-04-07) -
Observation of the Decay B+c → B0s π+
(Physical Review Letters , 2013, Vol. 111, No.18 (Novembre), 2013-11-01)The result of a search for the decay B+c→B0sπ+ is presented, using the B0s→D−sπ+ and B0s→J/ψϕ channels. The analysis is based on a data sample of pp collisions collected with the LHCb detector, corresponding ... -
Measurement of polarization amplitudes and CP asymmetries in B 0 → ϕK *(892)0
(Journal of High Energy Physics, 2014, Vol. 2014, No.5 (Maig), 2014-05-16)An angular analysis of the decay B 0 → ϕK *(892)0 is reported based on a pp collision data sample, corresponding to an integrated luminosity of 1.0 fb−1, collected at a centre-of-mass energy of s√ = 7 ... -
Measurement of the CKM angle γ using B ± → DK ± with D → K 0 S π + π −, K 0 S K + K − decays
(Journal of High Energy Physics, 2014, Vol. 2014, No.10 (Octubre), 2014-10-16)A binned Dalitz plot analysis of B ± → DK ± decays, with D→K0Sπ+π− and D→K0SK+K−, is performed to measure the CP-violating observables x ± and y ±, which are sensitive to the Cabibbo-Kobayashi-Maskawa ... -
A model-independent Dalitz plot analysis of B±→DK± with D→K0Sh+h− (h=π,K) decays and constraints on the CKM angle γ
(Physics Letters B , 2015, Vol. 718, No. 1 (Novembre), 2012-11-15)A binned Dalitz plot analysis of B± → DK± decays, with D → K0 Sπ+π− and D → K0 S K+K−, is performed to measure the CP-violating observables x± and y± which are sensitive to the CKM angle γ . The analysis ... -
Study of the rare B0s and B0 decays into the π+ π− μ+ μ− final state
(Physics Letters B , 2015, Vol. 743 (Abril), 2015-04-09)A search for the rare decays B0s→π+π−μ+μ−and B0→π+π−μ+μ−is performed in a data set corresponding to an integrated luminosity of 3.0fb−1collected by the LHCb detector in proton–proton collisions at ... -
Observation of the decay B0s → ψ(2S) K+ π−
(Physics Letters B , 2015, Vol. 747, (Juliol), 2015-07-30)The decay B-0s → ψ(2S)K+π- is observed using a data set corresponding to an integrated luminosity of 3.0fb-1 collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV. ... -
Determination of γ and −2βs from charmless two-body decays of beauty mesons
(Physics Letters B , 2015, Vol. 741 (Febrer), 2015-02-04)Using the latest LHCb measurements of time-dependent CP violation in the B-s(0) -> K+K- decay, a U-spin relation between the decay amplitudes of B-s(0) -> K+K- and B-0 -> p(+)p(-) decay processes allows ... -
Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ
(Journal of High Energy Physics, 2015, Vol. 2015, No.8 (Octubre), 2015-10-08)Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B 0 s → ϕϕ branching fraction is measured to be B(B0s→ϕ ... -
Measurement of the CP-violating phase β in B0 → J/ψ π+ π− decays and límits on penguin effects
(Physics Letters B , 2015, Vol. 742, (Març), 2015-03-06)Time-dependent CPviolation is measured in the (—)B0→J/ψπ+π−channel for each π+π−resonant final state using data collected with an integrated luminosity of 3.0fb−1in ppcollisions using the LHCb detector. ... -
Low noise front end ICECAL ASIC for the upgrade of the LHCb calorimeter
(Journal of Instrumentation, 2012, Vol. 7, No.1 (Gener), 2012-01-23)A fully differential ASIC with cooled input termination is presented as a solution for the Upgrade of the Calorimeter front end electronics. The LHCb experiment needs to increase about ten times the ... -
Measurement of the time-integrated CP asymmetry in D 0 → K 0S K 0S decays
(Journal of High Energy Physics, 2015, Vol. 2015, No.10 (Octubre), 2015-10-08)The time-integrated CP asymmetry in the decay D 0 → K 0S K 0S is measured using 3 fb−1 of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The ... -
Measurement of the exclusive Υ production cross-section in pp collisions at s√=7 TeV and 8 TeV
(Journal of High Energy Physics, 2015, Vol. 2015, No.9 (Setembre), 2015-09-14)A study is presented of central exclusive production of Υ(nS) states, where the Υ(nS) resonances decay to the μ + μ − final state, using pp collision data recorded by the LHCb experiment. The cross-section ... -
Measurement of CP violation parameters and polarisation fractions in B0s→J/ψK¯¯¯¯∗0 decays
(Journal of High Energy Physics, 2015, Vol. 2015, No.11 (Novembre), 2015-11-12)The first measurement of CP asymmetries in the decay B0s→J/ψK¯¯¯¯∗(892)0 and an updated measurement of its branching fraction and polarisation fractions are presented. The results are obtained using ... -
Measurements of the B +, B 0, B0s meson and Λ0b baryon lifetimes
(Journal of High Energy Physics, 2014, Vol. 2014, No.a (Abril), 2014-04-16)Measurements of b-hadron lifetimes are reported using pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb detector at a centre-of-mass energy of 7 TeV. Using ...