# EP Preprints

2016-06-28
15:21
 Amplitude analysis of $B^+\to J/\psi \phi K^+$ decays The first full amplitude analysis of $B^+\to J/\psi \phi K^+$ with $J/\psi\to\mu^+\mu^-$, $\phi\to K^+K^-$ decays is performed with a data sample of 3 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=7$ and $8$ TeV with the LHCb detector. [...] CERN-EP-2016-156 ; LHCB-PAPER-2016-019. - 2016. Fulltext - Previous draft version - Related data file(s)

2016-06-28
15:17
 Observation of $J/\psi\phi$ structures consistent with exotic states from amplitude analysis of $B^+\to J/\psi \phi K^+$ decays The first full amplitude analysis of $B^+\to J/\psi \phi K^+$ with $J/\psi\to\mu^+\mu^-$, $\phi\to K^+K^-$ decays is performed with a data sample of 3 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=7$ and $8$ TeV with the LHCb detector. [...] CERN-EP-2016-155 ; LHCB-PAPER-2016-018. - 2016. Fulltext - Previous draft version - Related data file(s)

2016-06-28
08:04
 Search for the Higgs boson produced in association with a $W$ boson and decaying to four $b$-quarks via two spin-zero particles in $pp$ collisions at 13 TeV with the ATLAS detector / ATLAS Collaboration This paper presents a dedicated search for exotic decays of the Higgs boson to a pair of new spin-zero particles, $H \rightarrow aa$, where the particle $a$ decays to $b$-quarks and has a mass in the range of 20-60 GeV. [...] arXiv:1606.08391 ; CERN-EP-2016-135. - 2016. - 23 p. Preprint - Full text

2016-06-28
08:04
 Amplitude analysis of $B^+\to J/\psi \phi K^+$ decays / LHCb collaboration The first full amplitude analysis of $B^+\to J/\psi \phi K^+$ with $J/\psi\to\mu^+\mu^-$, $\phi\to K^+K^-$ decays is performed with a data sample of 3 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=7$ and $8$ TeV with the LHCb detector. [...] arXiv:1606.07898 ; LHCB-PAPER-2016-019 ; CERN-EP-2016-156. - 2016. - 61 p. Preprint - Full text

2016-06-28
08:04
 Observation of $J/\psi\phi$ structures consistent with exotic states from amplitude analysis of $B^+\to J/\psi \phi K^+$ decays / LHCb collaboration The first full amplitude analysis of $B^+\to J/\psi \phi K^+$ with $J/\psi\to\mu^+\mu^-$, $\phi\to K^+K^-$ decays is performed with a data sample of 3 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=7$ and $8$ TeV with the LHCb detector. [...] arXiv:1606.07895 ; LHCB-PAPER-2016-018 ; CERN-EP-2016-155. - 2016. - 18 p. Preprint - Full text

2016-06-24
07:38
 Multiplicity-dependent enhancement of strange and multi-strange hadron production in proton-proton collisions at $\sqrt{s} = 7$ TeV / ALICE Collaboration The yields of strange (${\rm K}^{0}_{S}$, $\Lambda$, $\bar{\Lambda}$) and multi-strange ($\Xi^{-}$, $\bar{\Xi}^{+}$, $\Omega^{-}$, $\bar{\Omega}^{+}$) hadrons are measured at midrapidity in proton-proton (pp) collisions at $\sqrt{s}$ = 7 TeV as a function of the charged-particle multiplicity density (${\rm d}N_{\rm ch}/{\rm d}\eta$).The production rate of strange particles increases faster than that of non-strange hadrons, leading to an enhancement of strange particles relative to pions, similar to that found in nucleus-nucleus collisions as well as in proton-nucleus collisions at the LHC. [...] arXiv:1606.07424 ; CERN-EP-2016-153. - 2016. - 17 p. Preprint - Full text

2016-06-23
08:48
 Evidence for exotic hadron contributions to $\Lambda_b^0 \to J/\psi p \pi^-$ decays / LHCb collaboration A full amplitude analysis of $\Lambda_b^0 \to J/\psi p \pi^-$ decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV $pp$ collisions, corresponding to an integrated luminosity of 3 fb$^{-1}$. [...] arXiv:1606.06999 ; LHCB-PAPER-2016-015 ; CERN-EP-2016-151. - 2016. - 33 p. Preprint - Full text - Related data file(s) - Related supplementary data file(s)

2016-06-21
07:41
 Higher harmonic flow coefficients of identified hadrons in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV / ALICE Collaboration The elliptic, triangular, quadrangular and pentagonal anisotropic flow coefficients for $\pi^{\pm}$, $\mathrm{K}^{\pm}$ and p+$\overline{\mathrm{p}}$ in Pb-Pb collisions at $\sqrt{s_\mathrm{{NN}}} = 2.76$ TeV were measured with the ALICE detector at the Large Hadron Collider. [...] arXiv:1606.06057 ; CERN-EP-2016-159. - 2016. - 40 p. Preprint - Full text

2016-06-16
08:31
 Measurements of the S-wave fraction in $B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}$ decays and the $B^{0}\rightarrow K^{\ast}(892)^{0}\mu^{+}\mu^{-}$ differential branching fraction / LHCb collaboration A measurement of the differential branching fraction of the decay ${B^{0}\rightarrow K^{\ast}(892)^{0}\mu^{+}\mu^{-}}$ is presented together with a determination of the S-wave fraction of the $K^+\pi^-$ system in the decay $B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}$. [...] arXiv:1606.04731 ; CERN-EP-2016-141 ; LHCB-PAPER-2016-012. - 2016. Preprint - Full text - Related data file(s)

2016-06-14
07:54
 Exclusive $\omega$ meson muoproduction on transversely polarised protons / Adolph, C ; Agarwala, J ; Aghasyan, M ; Akhunzyanov, R ; Alexeev, M G ; Alexeev, G D ; Amoroso, A ; Andrieux, V ; Anfimov, N V ; Anosov, V et al. Exclusive production of $\omega$ mesons was studied at the COMPASS experiment by scattering $160~\mathrm{GeV}/\mathit{c}$ muons off transversely polarised protons. [...] arXiv:1606.03725 ; CERN-EP-2016-157. - 2016. - 23 p. Preprint - Full text