Search Results - "Baptista Leite, J."
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Precise determination of the Bs0–B¯s0 oscillation frequency
Published in Nature physics (2022)“…Mesons comprising a beauty quark and strange quark can oscillate between particle ( B s 0 ) and antiparticle ( B ¯ s 0 ) flavour eigenstates, with a frequency…”
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Observation of a J /ΨΛ Resonance Consistent with a Strange Pentaquark Candidate in B - → J /ψΛ( p )over-bar Decays
Published in Physical review letters (17-07-2023)“…An amplitude analysis of B- -> J/psi Lambda(p) over bar decays is performed using 4400 signal candidates selected on a data sample of pp collisions recorded…”
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Observation of $${{\varXi } ^0_{b}} \rightarrow {{\varXi } ^+_{c}} {{D} ^-_{s}} $$ and $${{\varXi } ^-_{b}} \rightarrow {{\varXi } ^0_{c}} {{D} ^-_{s}} $$ decays
Published in The European physical journal. C, Particles and fields (07-03-2024)“…Abstract The $$\Xi _b^0 \rightarrow \Xi _c^+ D_s^-$$ Ξ b 0 → Ξ c + D s - and $$\Xi _b^- \rightarrow \Xi _c^0 D_s^-$$ Ξ b - → Ξ c 0 D s - decays are observed…”
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Measurement of (sic) production in pp collisions at âs=5 TeV
Published in The journal of high energy physics (07-07-2023)“…The production cross-sections of (sic) mesons, namely (sic)(1S), (sic)(2S) and (sic)(3S), in pp collisions at root s = 5TeV are measured with a data sample…”
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Publisher Erratum: A study of $$C\!P$$ violation in the decays $${{B} ^\pm } \rightarrow [{{K} ^+} {{K} ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^{\pm }$$ ($$h = K, \pi $$) and $${{B} ^\pm } \rightarrow [{{\uppi } ^+} {{\uppi } ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^{\pm }
Published in The European physical journal. C, Particles and fields (28-07-2023)Get full text
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Searches for rare $$ {B}_s^0 $$ and B0 decays into four muons
Published in The journal of high energy physics (01-03-2022)“…A bstract Searches for rare $$ {B}_s^0 $$ B s 0 and B 0 decays into four muons are performed using proton-proton collision data recorded by the LHCb…”
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Measurement of χc1(3872) production in proton-proton collisions at $$ \sqrt{s} $$ = 8 and 13 TeV
Published in The journal of high energy physics (01-01-2022)“…A bstract The production cross-section of the χ c 1 (3872) state relative to the ψ (2 S ) meson is measured using proton-proton collision data collected with…”
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Search for the radiative $$ {\Xi}_b^{-} $$ → Ξ−γ decay
Published in The journal of high energy physics (01-01-2022)“…A bstract The first search for the rare radiative decay $$ {\Xi}_b^{-} $$ Ξ b − → Ξ − γ is performed using data collected by the LHCb experiment in…”
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First measurement of the $$C\!P$$ C P -violating phase in $${{B} ^0_{s}} \!\rightarrow {{J /\psi }} ($$ B s 0 → J / ψ ( $$\rightarrow $$ → $$e ^+e ^-$$ e + e - ) $$\phi $$ ϕ decays
Published in The European physical journal. C, Particles and fields (01-11-2021)“…Abstract A flavour-tagged time-dependent angular analysis of $${{B} ^0_{s}} \!\rightarrow {{J /\psi }} \phi $$ B s 0 → J / ψ ϕ decays is presented where the…”
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Observation of the Λ b 0 → Λ c + K + K − π − decay
Published in Physics letters. B (01-04-2021)Get full text
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Observation of the decay $$ {\Lambda}_{\mathrm{b}}^0 $$ → χc1pπ
Published in The journal of high energy physics (01-05-2021)“…A bstract The Cabibbo-suppressed decay $$ {\Lambda}_{\mathrm{b}}^0 $$ Λ b 0 → χ c1 pπ − is observed for the first time using data from proton-proton collisions…”
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Erratum to: Study of $$ {\mathrm{B}}_{\mathrm{s}}^0 $$ → J/ψπ+π−K+K− decays
Published in The journal of high energy physics (01-04-2021)“…The original article has been corrected…”
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Measurement of the CKM angle γ and $$ {B}_s^0\hbox{-} {\overline{B}}_s^0 $$ mixing frequency with $$ {B}_s^0\to {D}_s^{\mp }{h}^{\pm }{\pi}^{\pm }{\pi}^{\mp } $$ decays
Published in The journal of high energy physics (01-03-2021)“…A bstract The CKM angle γ is measured for the first time from mixing-induced CP violation between $$ {B}_s^0\to {D}_s^{\mp }{K}^{\pm }{\pi}^{\pm }{\pi}^{\mp }…”
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Observation of new excited $${B} ^0_{s} $$ B s 0 states
Published in The European physical journal. C, Particles and fields (01-07-2021)“…Abstract A structure is observed in the $${B} ^{\pm }{K} ^{\mp }$$ B ± K ∓ mass spectrum in a sample of proton–proton collisions at centre-of-mass energies of…”
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Observation of Enhanced Double Parton Scattering in Proton-Lead Collisions at s N N = 8.16 TeV
Published in Physical review letters (01-11-2020)Get full text
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Measurement of the branching fraction of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay
Published in The European physical journal. C, Particles and fields (01-04-2021)“…Abstract A branching fraction measurement of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay is presented using proton–proton…”
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Search for long-lived particles decaying to $$e ^\pm $$ e ± $$\mu ^\mp $$ μ ∓ $$\nu $$ ν
Published in The European physical journal. C, Particles and fields (01-03-2021)“…Abstract Long-lived particles decaying to $${e ^\pm } {\mu ^\mp } {\nu } $$ e ± μ ∓ ν , with masses between 7 and $$50 \,\text {GeV/}c^2 $$ 50 GeV/ c 2 and…”
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Search for heavy neutral leptons in $$W^+\rightarrow \mu ^{+}\mu ^{\pm }\, \text {jet}$$ W + → μ + μ ± jet decays
Published in The European physical journal. C, Particles and fields (01-03-2021)“…Abstract A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of…”
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Precision measurement of the $$ {B}_c^{+} $$ meson mass
Published in The journal of high energy physics (01-07-2020)“…A bstract A precision measurement of the $$ {B}_c^{+} $$ B c + meson mass is performed using proton- proton collision data collected with the LHCb experiment…”
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Constraints on the CKM angle γ from B ± → Dh ± decays using D → h ± h′∓ π 0 final states
Published in The journal of high energy physics (01-07-2022)“…Abstract A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb −1 is used to measure eleven CP violation observables…”
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