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LHCb Papers

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2021-11-23
12:08
Measurement of the photon polarization in $\Lambda_{b}^{0}\to\Lambda\gamma$ decays / LHCb Collaboration
The photon polarization in $b\to s\gamma$ transitions is measured for the first time in radiative b-baryon decays exploiting the unique spin structure of $\Lambda_{b}^{0}\to\Lambda\gamma$ decays. [...]
arXiv:2111.10194 ; LHCb-PAPER-2021-030 ; CERN-EP-2021-230 ; LHCB-PAPER-2021-030. - 2021.
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2021-11-23
11:49
Searches for rare $B_s^0$ and $B^0$ decays into four muons / LHCb Collaboration
Searches for rare $B_s^0$ and $B^0$ decays into four muons are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 $\text{fb}^{-1}$ . [...]
arXiv:2111.11339 ; LHCb-PAPER-2021-039 ; CERN-EP-2021-236 ; CERN-EP-2021-238 ; LHCB-PAPER-2021-039. - 2021.
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2021-11-08
11:29
Study of the $B_c^+$ decays into charmonia and three light hadrons / LHCb Collaboration
Using proton-proton collision data, corresponding to an integrated luminosity of $9fb^{-1}$ collected with the LHCb detector, seven decay modes of the $B_c^+$ meson into a $J/\psi$ or $\psi(2S)$ meson and three charged hadrons, kaons or pions, are studied. [...]
arXiv:2111.03001 ; LHCb-PAPER-2021-034 ; CERN-EP-2021-216 ; LHCB-PAPER-2021-034. - 2021. - 29 p.
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2021-11-08
11:14
Angular analysis of $D^0 \to \pi^+\pi^-\mu^+\mu^-$ and $D^0 \to K^+K^-\mu^+\mu^-$ decays and search for $CP$ violation / LHCb Collaboration
The first full angular analysis and an updated measurement of the decay-rate $CP$ asymmetry of the $D^0 \to \pi^+\pi^-\mu^+\mu^-$ and $D^0 \to K^+K^-\mu^+\mu^-$ decays are reported. [...]
arXiv:2111.03327 ; LHCb-PAPER-2021-035 ; CERN-EP-2021-212 ; LHCB-PAPER-2021-035. - 2021. - 27 p.
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2021-10-20
11:52
Tests of lepton universality using $B^0\to K^0_S \ell^+ \ell^-$ and $B^+\to K^{*+}\ell^+\ell^-$ decays / LHCb Collaboration
Tests of lepton universality in $B^0\to K^0_S \ell^+ \ell^-$ and $B^+\to K^{*+}\ell^+\ell^-$ decays where $\ell$ is either an electron or a muon are presented. [...]
arXiv:2110.09501 ; LHCb-PAPER-2021-038 ; CERN-EP-2021-208 ; LHCB-PAPER-2021-038. - 2021. - 24 p.
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2021-10-18
13:10
Search for massive long-lived particles decaying semileptonically at $\sqrt{s}=13$ TeV / LHCb Collaboration
A search is performed for massive long-lived particles (LLP) decaying semileptonically into a muon and two quarks. [...]
arXiv:2110.07293 ; LHCb-PAPER-2021-028 ; CERN-EP-2021-186 ; LHCB-PAPER-2021-028. - 2021. - 31 p.
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2021-10-12
11:22
Observation of two new excited ${\it\Xi}_b^0$ states decaying to ${\it\Lambda}_b^0 K^-\pi^+$ / LHCb Collaboration
Two narrow resonant states are observed in the ${\it\Lambda}_b^0 K^-\pi^+$ mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13$\rm TeV$, collected by the LHCb experiment and corresponding to an integrated luminosity of $6~{\rm fb}^{-1}$. [...]
arXiv:2110.04497 ; LHCb-PAPER-2021-025 ; CERN-EP-2021-188 ; LHCB-PAPER-2021-025. - 2021. - 20 p.
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2021-10-07
13:35
Simultaneous determination of CKM angle $\gamma$ and charm mixing parameters / LHCb Collaboration
A combination of measurements sensitive to the $C\!P$ violation angle $\gamma$ of the Cabibbo--Kobayashi--Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between $D^0$ and $\overline{D}^0$ mesons is performed. [...]
arXiv:2110.02350 ; LHCb-PAPER-2021-033 ; CERN-EP-2021-183 ; LHCB-PAPER-2021-033. - 2021. - 33 p.
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2021-09-17
13:44
Observation of the suppressed $\Lambda^0_b\to D p K^-$ decay with $D\to K^+ \pi^-$ and measurement of its CP asymmetry / LHCb Collaboration
A study of $\Lambda^0_b$ baryon decays to the $DpK^-$ final state is presented based on a proton-proton collision data sample corresponding to an integrated luminosity of 9fb$^{-1}$ collected with the LHCb detector. [...]
arXiv:2109.02621 ; LHCb-PAPER-2021-027 ; CERN-EP-2021-179 ; LHCB-PAPER-2021-027. - 2021. - 21 p.
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2021-09-17
09:37
Study of $Z$ bosons produced in association with charm in the forward region / LHCb Collaboration
The fraction of $Z+$jet events that contain a charm jet is measured for the first time in the forward region of proton-proton collisions. [...]
arXiv:2109.08084 ; LHCb-PAPER-2021-029 ; CERN-EP-2021-176 ; LHCB-PAPER-2021-029. - 2021. - 24 p.
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