Search Results - "Rodríguez, Alexandre Brea"
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Prospects on searches for baryonic Dark Matter produced in b-hadron decays at LHCb
Published in The European physical journal. C, Particles and fields (01-11-2021)“…A model that can simultaneously explain Dark Matter relic density and the apparent matter anti-matter imbalance of the universe has been recently proposed. The…”
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Prospects on searches for baryonic Dark Matter produced in $${\varvec{b}}$$-hadron decays at LHCb
Published in The European physical journal. C, Particles and fields (01-11-2021)“…Abstract A model that can simultaneously explain Dark Matter relic density and the apparent matter anti-matter imbalance of the universe has been recently…”
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3
Unleashing the full power of LHCb to probe Stealth New Physics
Published 08-02-2022“…In this paper, we describe the potential of the LHCb experiment to detect Stealth physics. This refers to dynamics beyond the Standard Model that would elude…”
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4
Observation of a Narrow Pentaquark State, P c ( 4312 ) + , and of the Two-Peak Structure of the P c ( 4450 )
Published in Physical review letters (05-06-2019)Get full text
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5
Observation of structure in the J/ψ-pair mass spectrum
Published in Science bulletin (Beijing) (15-12-2020)“…[Display omitted] Using proton-proton collision data at centre-of-mass energies of s=7,8 and 13TeV recorded by the LHCb experiment at the Large Hadron…”
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Measurements of the branching fraction ratio $$ \mathcal{B}\left(\phi \to {\mu}^{+}{\mu}^{-}\right)/\mathcal{B}\left(\phi \to {\textrm{e}}^{+}{\textrm{e}}^{-}\right) $$ with charm meson decays
Published in The journal of high energy physics (24-05-2024)“…A bstract Measurements of the branching fraction ratio $$ \mathcal{B}\left(\phi \to {\mu}^{+}{\mu}^{-}\right)/\mathcal{B}\left(\phi \to {e}^{+}{e}^{-}\right)…”
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Measurement of associated J/ψ-ψ(2S) production cross-section in pp collisions at $$ \sqrt{s} $$ = 13 TeV
Published in The journal of high energy physics (23-05-2024)“…A bstract The cross-section of associated J/ψ - ψ (2 S ) production in proton-proton collisions at a centre-of-mass energy of $$ \sqrt{s} $$ s = 13 TeV is…”
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Measurement of J/ψ-pair production in pp collisions at $$ \sqrt{s} $$ = 13 TeV and study of gluon transverse-momentum dependent PDFs
Published in The journal of high energy physics (14-03-2024)“…A bstract The production cross-section of J/ψ pairs in proton-proton collisions at a centre-of-mass energy of $$ \sqrt{s} $$ s = 13 TeV is measured using a…”
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9
Search for $${{B} _{c} ^+} \!\rightarrow {{\pi } ^+} {\mu ^+\mu ^-} $$ decays and measurement of the branching fraction ratio $${\mathcal {B}} ({{B} _{c} ^+} \!\rightarrow {\psi {(2S)}} {{\pi } ^+} )/{\mathcal {B}} ({{B} _{c} ^+} \!\rightarrow {{J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi }} {{\pi } ^+} )
Published in The European physical journal. C, Particles and fields (07-05-2024)“…Abstract The first search for nonresonant $${{B} _{c} ^+} \!\rightarrow {{\pi } ^+} {\mu ^+\mu ^-} $$ B c + → π + μ + μ - decays is reported. The analysis uses…”
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Observation of a Resonant Structure near the D s + D s − Threshold in the B + → D s + D s − K + Decay
Published in Physical review letters (01-08-2023)“…An amplitude analysis of the B+→D+sD−sK+ decay is carried out to study for the first time its intermediate resonant contributions, using proton-proton…”
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Allen: A High-Level Trigger on GPUs for LHCb
Published in Computing and software for big science (2020)“…We describe a fully GPU-based implementation of the first level trigger for the upgrade of the LHCb detector, due to start data taking in 2021. We demonstrate…”
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12
First observation and branching fraction measurement of the Λ b 0 → D s - p decay
Published in The journal of high energy physics (05-01-2023)“…The first observation of the Lambda(0)(b) -> D-s(-) p decay is presented using proton-proton collision data collected by the LHCb experiment at a…”
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13
Study of B c + meson decays to charmonia plus multihadron final states
Published in The journal of high energy physics (2023)“…Four decay modes of the B-c(+) meson into a J/psi meson and multiple charged kaons or pions are studied using proton-proton collision data, collected with the…”
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14
First measurement of the $Z\rightarrow \mu^+ \mu^-$ angular coefficients in the forward region of $pp$ collisions at $\sqrt{s}=13$ TeV
Published in Physical review letters (03-03-2022)“…The first study of the angular distribution of $\mu^+ \mu^-$ pairs produced in the forward rapidity region via the Drell-Yan reaction $pp \rightarrow…”
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15
Observation of the doubly charmed baryon decay $$ {\varXi}_{cc}^{++}\to {\varXi}_c^{\prime +}{\pi}^{+}
Published in The journal of high energy physics (06-05-2022)“…A bstract The $$ {\varXi}_{cc}^{++}\to {\varXi}_c^{\prime +}{\pi}^{+} $$ Ξ cc + + → Ξ c ′ + π + decay is observed using proton-proton collisions collected by…”
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Tests of lepton universality using $B^0\to K^0_S \ell^+ \ell^-$ and $B^+\to K^{+} \ell^+ \ell^-$ decays
Published in Physical review letters (2022)“…Tests of lepton universality in B0 → KS0ℓ+ℓ- and B+ → K*+ℓ+ℓ- decays where ℓ is either an electron or a muon are presented. The differential branching…”
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Angular Analysis of $D^0 \to \pi^+\pi^-\mu^+\mu^-$ and $D^0 \to K^+K^-\mu^+\mu^-$ Decays and Search for $CP$ Violation
Published in Physical review letters (2022)“…The first full angular analysis and an updated measurement of the decay-rate CP asymmetry of the D0 → π+π-μ+μ- and D0 → K+K-μ+μ- decays are reported. The…”
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Observation of Two New Excited $\Xi_b^0$ States Decaying to $\Lambda^0_b K^- \pi
Published in Physical review letters (2022)“…Two narrow resonant states are observed in the Λ b0K-π+ mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV,…”
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Evidence for a new structure in the $J/\psi p$ and $J/\psi \bar{p}$ systems in $B_s^0 \to J/\psi p \bar{p}$ decays
Published in Physical review letters (2022)“…An amplitude analysis of flavor-untagged Bs0 → J / ψp p ¯ decays is performed using a sample of 797±31 decays reconstructed with the LHCb detector. The data,…”
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Prospects on searches for baryonic Dark Matter produced in $b$-hadron decays at LHCb
Published 24-06-2021“…Eur. Phys. J. C (2021) 81:964 A model that can simultaneously explain Dark Matter relic density and the apparent matter anti-matter imbalance of the universe…”
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