Kauniskangas, Anni Matilda - Resultados da pesquisa

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Observation and branching fraction measurement of the decay $\Xi_b^- \to \Lambda_b^0 \pi^-$ / LHCb Collaboration
The decay $\Xi_b^-\to\Lambda_b^0\pi^-$ is observed using a proton-proton collision data sample collected at center-of-mass energy $\sqrt{s}=13$ TeV with the LHCb detector, corresponding to an integrated luminosity of 5.5 fb$^{-1}$. This process is mediated by the $s\to u\bar{u}d$ quark-level transition, where the $b$ quark in the $\Xi_b^-$ baryon is a spectator in the decay. [...]
arXiv:2307.09427; LHCb-PAPER-2023-015; CERN-EP-2023-116; LHCB-PAPER-2023-015.- Geneva : CERN, 2023-10-01 - 16 p. - Published in : Phys. Rev. D 108 (2023) 072002 Fulltext: Xib2LbPi_2023_14Aug2023 - PDF; Publication - PDF; 2307.09427 - PDF; External link: Previous draft version

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Amplitude analysis of the $\Lambda_b^0\to pK^-\gamma$ decay / LHCb Collaboration
The resonant structure of the radiative decay $\Lambda_b^0\to pK^-\gamma$ in the region of proton-kaon invariant-mass up to 2.5 GeV$/c^2$ is studied using proton-proton collision data recorded at centre-of-mass energies of 7, 8, and 13 TeV collected with the LHCb detector, corresponding to a total integrated luminosity of 9 fb$^{-1}$. Results are given in terms of fit and interference fractions between the different components contributing to this final state. [...]
arXiv:2403.03710; LHCb-PAPER-2023-036; CERN-EP-2023-253; LHCB-PAPER-2023-036.- Geneva : CERN, 2024-06-18 - 39 p.
Fulltext: LHCb-PAPER-2023-036 - PDF; 2403.03710 - PDF; document - PDF; Related data file(s): ZIP; External link: Previous draft version

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Observation of the $B_c^+ \to J/\psi \pi^+ \pi^0$ decay / LHCb Collaboration
The first observation of the $B_c^+ \to J/\psi \pi^+ \pi^0$ decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of 9 fb$^{-1}$, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV. The ratio of its branching fraction relative to the $B_c^+ \to J/\psi \pi^+$ channel is measured to be $$ \frac{ {\cal{B}}_{( B_c^+ \to J/\psi \pi^+\pi^0 ) }} { {\cal{B}}_{( B_c^+ \to J/\psi \pi^+ ) }} = 2.80 \pm 0.15 \pm 0.11 \pm 0.16 \,, $$ where the first uncertainty is statistical, the second systematic and the third related to imprecise knowledge of the branching fractions for $B^+ \to J/\psi K^{*+}$ and $B^+ \to J/\psi K^+$ decays, which are used to determine the $\pi^0$ detection efficiency. [...]
arXiv:2402.05523; LHCb-PAPER-2023-046; CERN-EP-2024-019; LHCB-PAPER-2023-046.- Geneva : CERN, 2024-04-30 - 30 p. - Published in : JHEP 2404 (2024) 151 Fulltext: LHCb-PAPER-2023-046 - PDF; 2402.05523 - PDF; document - PDF; Related data file(s): ZIP;

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Measurement of the $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s} = 5.02$ TeV / LHCb Collaboration
The first measurement of the $Z$ boson production cross-section at centre-of-mass energy $\sqrt{s} = 5.02\,$TeV in the forward region is reported, using $pp$ collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of $100 \pm 2\,\rm{pb^{-1}}$. The production cross-section is measured for final-state muons in the pseudorapidity range $2.0<\eta<4.5$ with transverse momentum $p_{\rm{T}}> 20\,\rm{GeV/}\it{c}$. [...]
arXiv:2308.12940; LHCb-PAPER-2023-010; CERN-EP-2023-141; LHCB-PAPER-2023-010.- Geneva : CERN, 2024-02-13 - 38 p. - Published in : JHEP 2402 (2024) 070 Fulltext: LHCb-PAPER-2023-010 - PDF; Publication - PDF; 2308.12940 - PDF; Related data file(s): ZIP;

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Measurement of the CKM angle $\gamma$ using the $B^{\pm}\rightarrow D^*h^{\pm}$ channels / LHCb Collaboration
A measurement of the $CP$-violating observables from $B^{\pm}\rightarrow D^* K^{\pm}$ and $\mbox{$B^{\pm}\rightarrow D^* \pi^{\pm}$}$ decays is presented, where $D^* (D) $ is an admixture of $D^{*0}$ and $\bar{D}^{*0}$ ($D^0$ and $\bar{D}^0$) states and is reconstructed through the decay chains $ D^* \rightarrow D\pi^0/\gamma$ and $\mbox{$D \to K_S^0 \pi^+\pi^-/K_S^0 K^+K^-$}$. The measurement is performed by analysing the signal yield variation across the $D$ decay phase space and is independent of any amplitude model. [...]
arXiv:2310.04277; LHCb-PAPER-2023-012; CERN-EP-2023-170.- Geneva : CERN, 2023-12-01 - 32 p. - Published in : JHEP 2312 (2023) 13 Fulltext: latex_B2Dsth_JHEP - PDF; Publication - PDF; 2310.04277 - PDF; document - PDF; Related data file(s): ZIP;

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Prompt and nonprompt $\psi(2S)$ production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV / LHCb Collaboration
The production of $\psi(2S)$ mesons in proton-lead collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_{NN}}=8.16$ TeV is studied with the LHCb detector using data corresponding to an integrated luminosity of 34 nb$^{-1}$. The prompt and nonprompt $\psi(2S)$ production cross-sections and the ratio of the $\psi(2S)$ to $J/\psi$ cross-section are measured as a function of the meson transverse momentum and rapidity in the nucleon-nucleon centre-of-mass frame, together with forward-to-backward ratios and nuclear modification factors. [...]
arXiv:2401.11342; LHCb-PAPER-2023-024; CERN-EP-2023-293.- Geneva : CERN, 2024-04-19 - 55 p. - Published in : JHEP 2404 (2024) 111 Fulltext: LHCb-PAPER-2023-024 - PDF; 2401.11342 - PDF; document - PDF; Related data file(s): ZIP;

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Multiplicity dependence of σ$_{ψ(2S)}$/σ$_{J/ψ}$ in pp collisions at $ \sqrt{s} $ = 13 TeV / LHCb Collaboration
The ratio of production cross-sections of $\psi(2S)$ over $J/\psi$ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy $\sqrt{s}=13$ TeV is measured with a data sample collected by the LHCb detector, corresponding to an integrated luminosity of 658 pb$^{-1}$. The ratio is measured for both prompt and non-prompt $\psi(2S)$ and $J/\psi$ mesons. [...]
arXiv:2312.15201; LHCb-PAPER-2023-035; CERN-EP-2023-277.- 2024-05-22 - 32 p. - Published in : JHEP 2405 (2024) 243 Fulltext: 2312.15201 - PDF; document - PDF;

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Study of $B_c^+ \rightarrow \chi_c \pi^+$ decays / LHCb Collaboration
A study of $B_c^+ \rightarrow \chi_c \pi^+$ decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9fb$^{-1}$. The decay $B_c^+ \rightarrow \chi_{c2} \pi^+$ is observed for the first time, with a significance exceeding seven standard deviations. [...]
arXiv:2312.12987; LHCb-PAPER-2023-039; CERN-EP-2023-274.- 2024-02-22 - 30 p. - Published in : JHEP 2402 (2024) 173 Fulltext: 2312.12987 - PDF; document - PDF;

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Search for ${{B} _{c} ^+} \!\rightarrow {{\pi } ^+} {\mu ^+\mu ^-} $ decays and measurement of the branching fraction ratio ${\mathcal {B}} ({{B} _{c} ^+} \!\rightarrow {\psi {(2S)}} {{\pi } ^+} )/{\mathcal {B}} ({{B} _{c} ^+} \!\rightarrow {{J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi }} {{\pi } ^+} )$ / LHCb Collaboration
The first search for nonresonant $B_c^+\to\pi^+\mu^+\mu^-$ decays is reported. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. [...]
arXiv:2312.12228; LHCb-PAPER-2023-037; CERN-EP-2023-280; LHCB-PAPER-2023-037.- Geneva : CERN, 2024-05-07 - 27 p. - Published in : Eur. Phys. J. C 84 (2024) 468 Fulltext: LHCb-Paper-2023-037 - PDF; 2312.12228 - PDF; document - PDF; Related data file(s): ZIP;

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Amplitude analysis of the $B^0 \to K^{*0}\mu^+\mu^-$ decay / LHCb Collaboration
An amplitude analysis of the $B^{0}\to K^{*0}\mu^+\mu^-$ decay is presented using a dataset corresponding to an integrated luminosity of $4.7$ fb$^{-1}$ of $pp$ collision data collected with the LHCb experiment. For the first time, the coefficients associated to short-distance physics effects, sensitive to processes beyond the Standard Model, are extracted directly from the data through a $q^2$-unbinned amplitude analysis, where $q^2$ is the $\mu^+\mu^-$ invariant mass squared. [...]
arXiv:2312.09115; LHCb-PAPER-2023-033; CERN-EP-2023-273.- Geneva : CERN, 2024-03-28 - 13 p. - Published in : Phys. Rev. Lett. 132 (2024) 131801 Fulltext: LHCb-PAPER-2023-033 - PDF; 2312.09115 - PDF; Publication - PDF; Related data file(s): ZIP;

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Veja também: nomes de autores similares
6	Kauniskangas, A M
11	Kauniskangas, A.
15	Kauniskangas, A.M.
106	Kauniskangas, Anni

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