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LHCb Papers

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2022-05-19
10:28
Measurement of antiproton production from antihyperon decays in $pHe$ collisions at $\sqrt{s_{NN}}=110$ GeV
The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. [...]
CERN-EP-2022-091 ; LHCB-PAPER-2022-006. - 2022.
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2022-05-19
09:25
Search for $CP$ violation using $\hat{T}$-odd correlations in $B^{0} \to p \bar p K^{+} \pi^{-}$ decays
A search for $CP$ and $P$ violation in charmless four-body $B^{0} \to p \bar p K^{+} \pi^{-}$ decays is performed using triple-product asymmetry observables. [...]
CERN-EP-2022-083 ; LHCB-PAPER-2022-003. - 2022.
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2022-05-12
16:38
Measurement of the prompt $D^0$ nuclear modification factor in $p$Pb at $\sqrt{s_{NN}}$ = 8.16 TeV
The production of prompt $D^0$ mesons in proton-lead collisions in the forward and backward configurations at a center-of-mass energy per nucleon pair of $\sqrt{s_\mathrm{NN}} = 8.16~\mathrm{TeV}$ is measured by the LHCb experiment. [...]
arXiv:2205.03936 ; LHCb-PAPER-2022-007,CERN-EP-2022-082 ; LHCb-PAPER-2022-007 ; CERN-EP-2022-082. - 2022.
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2022-04-28
12:25
Evidence for modification of $b$ quark hadronization in high-multiplicity $pp$ collisions at $\sqrt{s} = 13$ TeV
The production rate of $B^{0}_{s}$ mesons relative to $B^{0}$ mesons is measured by the LHCb experiment in $pp$ collisions at a center-of-mass energy $\sqrt{s} = 13$ TeV over the forward rapidity interval $2 < y < 4.5$ as a function of the charged particle multiplicity measured in the event. [...]
arXiv:2204.13042 ; LHCb-PAPER-2022-001 ; CERN-EP-2022-062 ; LHCB-PAPER-2022-001. - 2022.
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2022-04-28
11:11
Measurement of $CP$ asymmetries in $D^+_{(s)}\rightarrow \eta \pi^+$ and $D^+_{(s)}\rightarrow \eta^{\prime} \pi^+$ decays
Searches for $CP$ violation in the decays $D^+_{(s)}\rightarrow \eta \pi^+$ and $D^+_{(s)}\rightarrow \eta^{\prime} \pi^+$ are performed using $pp$ collision data corresponding to 6 fb$^{-1}$ of integrated luminosity collected by the LHCb experiment. [...]
arXiv:2204.12228 ; CERN-EP-2022-035 ; LHCb-PAPER-2021-051. - 2022.
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2022-04-27
13:38
Observation of sizeable $\omega$ contribution to $\chi_{c1}(3872) \to \pi^+\pi^- J/\psi$ decays
Resonant structures in the dipion mass spectrum from $\chi_{c1}(3872)\to\pi^+\pi^- J/\psi$ decays, produced via $B^+\to K^+\chi_{c1}(3872)$ decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb$^{-1}$. [...]
arXiv:2204.12597 ; LHCb-PAPER-2021-045 ; CERN-EP-2022-049 ; LHCB-PAPER-2021-045. - 2022.
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2022-04-22
17:01
Nuclear modification factor of neutral pions in the forward and backward regions in $p$Pb collisions
The nuclear modification factor of neutral pions is measured in proton-lead collisions collected at a center-of-mass energy per nucleon of $8.16$ TeV with the LHCb detector. [...]
arXiv:2204.10608 ; LHCb-PAPER-2021-053 ; CERN-EP-2022-050 ; LHCB-PAPER-2021-053. - 2022.
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2022-04-21
15:54
Search for the doubly heavy baryon $\it{\Xi}_{bc}^{+}$ decaying to $J/\it{\psi} \it{\Xi}_{c}^{+}$
A first search for the $\it{\Xi}_{bc}^{+}\to J/\it{\psi}\it{\Xi}_{c}^{+}$ decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of $9\,\mathrm{fb}^{-1}$ recorded at centre-of-mass energies of 7, 8, and $13\mathrm{\,Te\kern -0.1em V}$. [...]
arXiv:2204.09541 ; LHCb-PAPER-2022-005 ; CERN-EP-2022-048. - 2022. - 16.
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2022-02-21
17:10
Measurement of the charm mixing parameter $y_{CP} - y_{CP}^{K\pi}$ using two-body $D^0$ meson decays / LHCb Collaboration
A measurement of the ratios of the effective decay widths of $D^0 \to \pi^-\pi^+$ and $D^0 \to K^-K^+$ decays over that of $D^0 \to K^-\pi^+$ decays is performed with the LHCb experiment using proton-proton collisions at a centre-of-mass energy of $13\,\mathrm{TeV}$, corresponding to an integrated luminosity of $6\,\mathrm{fb^{-1}}$. [...]
arXiv:2202.09106 ; LHCb-PAPER-2021-041 ; CERN-EP-2022-022 ; LHCB-PAPER-2021-041. - 2022. - 27 p.
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2022-02-18
14:54
Observation of the doubly charmed baryon decay $ {\varXi}_{cc}^{++}\to {\varXi}_c^{\prime +}{\pi}^{+} $ / LHCb Collaboration
The $\it{\Xi_{cc}^{++}\to \Xi_{c}^{'+}\pi^{+}}$ decay is observed using proton-proton collisions collected by the LHCb experiment at a centre-of-mass energy of $13\mathrm{\,Te\kern -0.1em V}$, corresponding to an integrated luminosity of $5.4\,\mathrm{fb}^{-1}$. The $\it{\Xi_{cc}^{++}\to \Xi_{c}^{'+}\pi^{+}}$ decay is reconstructed partially, where the photon from the $\it{\Xi_{c}^{'+} \to \Xi_{c}^{+}\gamma}$ decay is not reconstructed and the $pK^-\pi^+$ final state of the $\it{\Xi_{c}^{+}}$ baryon is employed. [...]
arXiv:2202.05648; LHCb-PAPER-2021-052; CERN-EP-2022-016.- 2022-05-06 - 19 p. - Published in : JHEP 2205 (2022) 038 Fulltext: LHCb-PAPER-2021-052_to_arXiv_ - PDF; document - PDF; 2202.05648 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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