# EP Preprints

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. - 2022. Fulltext - Related data file(s) - Supplementary information

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. Fulltext - Related data file(s) - Supplementary information - Fulltext

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. Fulltext - Related data file(s) - Fulltext

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. Fulltext - Related data file(s) - Fulltext

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. Fulltext - Related data file(s) - Supplementary information - Fulltext

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. Fulltext - Related data file(s) - Fulltext

2022-02-23
11:31
 Search for single scalar and vector leptoquark production in e-photon scattering at $\sqrt{s}$ = 189 GeV with the DELPHI detector / Benekos, N C ; Papadopoulou, T D DELPHI-99-47-PHYS-821. - 2001. - 17 p.

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. Fulltext - Related data file(s) - Supplementary information - Fulltext

2022-02-10
15:35
 Study of charmonium and charmonium-like contributions in $B^+ \rightarrow J/\psi \eta K^+$ decays / LHCb Collaboration A study of $B^+ \rightarrow J/\psi \eta K^+$ decays, followed by $J/\psi \rightarrow \mu^+ \mu^-$ and $\eta \rightarrow \gamma \gamma$, is performed using a dataset collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb$^{-1}$. [...] arXiv:2202.04045 ; CERN-EP-2022-009 ; LHCb-PAPER-2021-047 ; LHCB-PAPER-2021-047. - 2022. - 31 p. Related data file(s) - Related data file(s) - Fulltext

2022-01-05
13:53
 Constraints on the CKM angle $\gamma$ from $B^\pm\rightarrow Dh^\pm$ decays using $D\rightarrow h^\pm h^{\prime\mp}\pi^0$ final states / LHCb Collaboration A data sample collected with the LHCb detector, corresponding to an integrated luminosity of $9~{\rm fb}^{-1}$, is used to measure $CP$ observables in $B^\pm \to D h^\pm$ decays, where $h^{(\prime)}$ is either a kaon or a pion, and the neutral $D$ meson decay is reconstructed in the three-body final states $K^\pm \pi^\mp \pi^0$, $\pi^\pm \pi^\mp \pi^0$, and $K^\pm K^\mp \pi^0$. [...] arXiv:2112.10617 ; LHCb-PAPER-2021-036 ; CERN-EP-2021-255 ; LHCB-PAPER-2021-036. - 2022. - 24 p. Fulltext - Related data file(s) - Fulltext