Search Results - "Hennequin, A. M"
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Study of the doubly charmed tetraquark Tcc
Published in Nature communications (16-06-2022)“…Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional…”
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2
Tracking of charged particles with nanosecond lifetimes at LHCb
Published 18-09-2024“…EPJC 84 (2024) 761 A method is presented to reconstruct charged particles with lifetimes between 10 ps and 10 ns, which considers a combination of their decay…”
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3
Observation of New Resonances Decaying to J/ψK^{+} and J/ψϕ
Published in Physical review letters (20-08-2021)Get full text
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4
Search for prompt production of pentaquarks in charm hadron final states
Published 02-08-2024“…Phys. Rev. D 110 (2024) 032001 A search for hidden-charm pentaquark states decaying to a range of $\Sigma_{c}\bar{D}$ and $\Lambda_{c}\bar{D}$ final states, as…”
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Model-Independent Study of Structure in B^{+}→D^{+}D^{-}K^{+} Decays
Published in Physical review letters (11-12-2020)“…The only anticipated resonant contributions to B^{+}→D^{+}D^{-}K^{+} decays are charmonium states in the D^{+}D^{-} channel. A model-independent analysis,…”
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6
Angular Analysis of the B^{+}→K^{+}μ^{+}μ^{-} Decay
Published in Physical review letters (23-04-2021)“…We present an angular analysis of the B^{+}→K^{*+}(→K_{S}^{0}π^{+})μ^{+}μ^{-} decay using 9 fb^{-1} of pp collision data collected with the LHCb experiment…”
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7
Test of Lepton Universality in b→sℓ^{+}ℓ^{-} Decays
Published in Physical review letters (04-08-2023)“…The first simultaneous test of muon-electron universality using B+→K+ℓ+ℓ− and B0→K*0ℓ+ℓ− decays is performed, in two ranges of the dilepton invariant-mass…”
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Search for A^{'}→μ^{+}μ^{-} Decays
Published in Physical review letters (31-01-2020)“…Searches are performed for both promptlike and long-lived dark photons, A^{'}, produced in proton-proton collisions at a center-of-mass energy of 13 TeV. These…”
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9
Curvature-bias corrections using a pseudomass method
Published 06-04-2024“…JINST 19 (2024) P03010 Momentum measurements for very high momentum charged particles, such as muons from electroweak vector boson decays, are particularly…”
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10
Helium identification with LHCb
Published 06-02-2024“…JINST 19 (2024) P02010 The identification of helium nuclei at LHCb is achieved using a method based on measurements of ionisation losses in the silicon sensors…”
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Momentum scale calibration of the LHCb spectrometer
Published 06-02-2024“…2024 JINST 19 P02008 For accurate determination of particle masses accurate knowledge of the momentum scale of the detectors is crucial. The procedure used to…”
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12
First Observation of a Doubly Charged Tetraquark and Its Neutral Partner
Published in Physical review letters (28-07-2023)“…A combined amplitude analysis is performed for the decays B^{0}→D[over ¯]^{0}D_{s}^{+}π^{-} and B^{+}→D^{-}D_{s}^{+}π^{+}, which are related by isospin…”
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Study of the Bose-Einstein correlations of same-sign pions in proton-lead collisions
Published 11-10-2023“…JHEP 09 (2023) 172 Correlations of same-sign charged particles are analysed using proton-lead collision data collected by the LHCb experiment at a…”
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14
Observation of the mass difference between neutral charm-meson eigenstates
Published 17-08-2023“…Phys. Rev. Lett. 127, 111801 (2021); erratum: Phys. Rev. Lett. 131, 079901 (2023) A measurement of mixing and $C\!P$ violation in neutral charm mesons is…”
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15
Measurement of the Ratios of Branching Fractions R ( D ) and R ( D 0 )
Published in Physical review letters (15-09-2023)“…The ratios of branching fractions $R(D*)$ ≡ $B(\overline{B} → D*τ^-\overline{ν}_μ$)/$B$($\overline{B}$ → $D*μ^-\overline{ν}_μ$) and $R$($D$0) ≡ $B$($B$- →…”
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16
First observation of a doubly charged tetraquark and its neutral partner
Published 01-08-2023“…Phys. Rev. Lett. 131, 041902 (2023) A combined amplitude analysis is performed for the decays $B^0 \rightarrow \overline{D}^0 D^+_s\pi^-$ and $B^+\rightarrow…”
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17
Angular analysis of the rare decay Bs0→ ϕμ+μ
Published in The journal of high energy physics (08-11-2021)“…A bstract An angular analysis of the rare decay B s 0 → ϕμ + μ − is presented, using proton-proton collision data collected by the LHCb experiment at…”
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Analysis of Neutral B-Meson Decays into Two Muons
Published in Physical review letters (2022)“…Branching fraction and effective lifetime measurements of the rare decay B_{s}^{0}→μ^{+}μ^{-} and searches for the decays B^{0}→μ^{+}μ^{-} and…”
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19
Observation of the Mass Difference between Neutral Charm-Meson Eigenstates
Published in Physical review letters (10-09-2021)“…A measurement of mixing and C P violation in neutral charm mesons is performed using data reconstructed in proton-proton collisions collected by the LHCb…”
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Test of lepton universality in beauty-quark decays
Published 13-09-2022“…Nature Physics 18, (2022) 277-282 The Standard Model of particle physics currently provides our best description of fundamental particles and their…”
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