# EP Preprints

Senast inlagda poster:
2017-10-12
14:36
 Search for the lepton-flavour violating decays $B^0_{(s)} \rightarrow e^\pm \mu^\mp$ / LHCb Collaboration A search for the lepton-flavour violating decays $B^0_s \rightarrow e^\pm \mu^\mp$ and $B^0 \rightarrow e^\pm \mu^\mp$ is performed based on a sample of proton-proton collision data corresponding to an integrated luminosity of 3 $\mbox{fb}^{-1}$, collected with the LHCb experiment at centre-of-mass energies of $7$ and $8 ~ \text {TeV}$. [...] LHCB-PAPER-2017-031 ; CERN-EP-2017-242 ; arXiv:1710.04111 ; LHCB-PAPER-2017-031. - 2017. Fulltext - Related data file(s) - Preprint - Supplementary information

2017-10-09
10:08
 Search for dark photons produced in 13 TeV $pp$ collisions / LHCb Collaboration Searches are performed for both prompt-like and long-lived dark photons, $A^{\prime}$, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using $A^{\prime}\to\mu^+\mu^-$ decays and a data sample corresponding to an integrated luminosity of 1.6 fb$^{-1}$ collected with the LHCb detector. [...] LHCB-PAPER-2017-038 ; CERN-EP-2017-248 ; arXiv:1710.02867 ; LHCB-PAPER-2017-038. - 2017. Fulltext - Related data file(s) - Preprint

2017-10-05
22:10
 Generating a synthetic axion signal for cold cark matter axion searches using microwave cavities / Caspers, Fritz (CERN) ; Miceli, Lino (IBS, Daejeon) We demonstrated that an axion signal in a RF resonator can be synthesized and controlled with commercially available instrumentation. [...] CERN-OPEN-2017-023. - 2017. - 5 p. Preprint

2017-09-18
16:32
 Measurement of $CP$ observables in $B^{\pm} \rightarrow D K^{*\pm}$ decays using two- and four-body $D$ final states / LHCb Collaboration Measurements of $CP$ observables in $B^{\pm} \rightarrow D K^{*\pm}$ decays are presented, where $D$ denotes a superposition of $D^0$ and $\overline{D^0}$ meson states. [...] LHCB-PAPER-2017-030 ; CERN-EP-2017-208 ; arXiv:1709.05855 ; LHCB-PAPER-2017-030. - 2017. Fulltext - Related data file(s) - Preprint

2017-09-15
14:53
 Precise measurement of the $\chi_{c1}$ and $\chi_{c2}$ resonance parameters with the decays $\chi_{c1,c2}\to J\psi\mu^+\mu^-$ / LHCb Collaboration The decays $\chi_{c1} \rightarrow J/\psi \mu^+ \mu^-$ and $\chi_{c2} \rightarrow J/\psi \mu^+ \mu^-$ are observed and used to study the resonance parameters of the $\chi_{c1}$ and $\chi_{c2}$ mesons. [...] CERN-EP-2017-228 ; LHCB-PAPER-2017-036 ; arXiv:1709.04247 ; LHCB-PAPER-2017-036. - 2017. - 17 p. Fulltext - Related data file(s) - Supplementary information - Preprint

2017-09-14
12:21
 Measurement of $CP$ violation in $B^0\rightarrow J/\psi K^0_\mathrm{S}$ and $B^0\rightarrow\psi(2S) K^0_\mathrm{S}$ decays / LHCb Collaboration A measurement is presented of decay-time-dependent $CP$ violation in the decays $B^0\rightarrow J/\psi K^0_\mathrm{S}$ and $B^0\rightarrow\psi(2S) K^0_\mathrm{S}$, where the $J/\psi$ is reconstructed from two electrons and the $\psi(2S)$ from two muons. [...] LHCB-PAPER-2017-029 ; CERN-EP-2017-209 ; arXiv:1709.03944 ; LHCB-PAPER-2017-029. - 2017. Fulltext - Related data file(s) - Preprint

2017-09-12
11:56
 Measurement of forward $Z \rightarrow b \bar{b}$ production in $pp$ collisions at $\sqrt{s}=8$ TeVMeasurement of forward $Z \rightarrow b \bar{b}$ production in $pp$ collisions at $\sqrt{s}=8$~TeV / LHCb Collaboration The decay $Z \rightarrow b \bar{b}$ is reconstructed in $pp$ collision data, corresponding to 2 fb$^{-1}$ of integrated luminosity, collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s}=8$ TeV. [...] LHCB-PAPER-2017-024 ; CERN-EP-2017-211 ; arXiv:1709.03458 ; LHCB-PAPER-2017-024-AND-CERN-EP-2017-211 ; LHCB-PAPER-2017-024. - 2017. Fulltext - Related data file(s) - Preprint

2017-09-08
16:35
 Measurement of the shape of the $\Lambda_b^0\to\Lambda_c^+\mu^{-}\overline{\nu}_{\mu}$ differential decay rate / LHCb Collaboration A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay decay ${\Lambda}^0_b \to \Lambda^+_c \mu^- \bar {\nu} _\mu$ is reported, using data corresponding to 3 fb$^{-1}$ collected with the LHCb detector in proton-proton collisions. [...] CERN-PH-EP-2017-164 ; LHCB-PAPER-2017-016 ; arXiv:1709.01920 ; LHCB-PAPER-2017-016. - 2017. - 24 p. Fulltext - Related data file(s) - Preprint

2017-09-08
10:15
 Bose-Einstein correlations of same-sign charged pions in the forward region in $pp$ collisions at $\sqrt{s}$ = 7 TeV / LHCb Collaboration Bose-Einstein correlations of same-sign charged pions, produced in proton-proton collisions at a $7 ~\text {TeV}$ centre-of-mass energy, are studied using a data sample collected by the LHCb experiment. [...] CERN-EP-2017-203 ; LHCB-PAPER-2017-025 ; arXiv:1709.01769 ; LHCB-PAPER-2017-025. - 2017. Fulltext - Related data file(s) - Preprint

2017-09-08
10:09
 First observation of the rare purely baryonic decay $B^0 \to p \bar{p}$ / LHCb Collaboration The first observation of the decay of a $B^0$ meson to a purely baryonic final state, $B^0 \to p \bar{p}$, is reported. [...] LHCB-PAPER-2017-022 ; CERN-EP-2017-190 ; arXiv:1709.01156 ; LHCB-PAPER-2017-022. - 2017. Fulltext - Related data file(s) - Supplementary information - Preprint