# PH-EP Preprints

Posledne pridané:
2014-02-28
04:27
 Observation of photon polarization in the $b \to s\gamma$ transition / LHCb collaboration This Letter presents a study of the flavor-changing neutral current radiative $B^{\pm} \to K^{\pm}\pi^{\mp}\pi^{\pm}\gamma$ decays performed using data collected in proton-proton collisions with the LHCb detector at $7$ and $8\,$TeV center-of-mass energies. [...] arXiv:1402.6852 ; CERN-PH-EP-2014-026 ; LHCB-PAPER-2014-001. - 2014. - 17 p. Preprint - Related data file(s) - Related supplementary data file(s)

2014-02-26
16:23
 Measurement of resonant and $CP$ components in $\overline{B}_s^0\to J/\psi\pi^+\pi^-$ decays / LHCb Collaboration The resonant structure of the decay $\overline{B}_s^0\to J/\psi\pi^+\pi^-$ is studied using data corresponding to 3 fb$^{-1}$ of integrated luminosity from $pp$ collisions by the LHC and collected by the LHCb detector. [...] arXiv:1402.6248 ; LHCB-PAPER-2013-069 ; CERN-PH-EP-2014-024. - 2014. - 31 p. Related data file(s) - Preprint

2014-02-26
04:32
 Precision measurement of the ratio of the $\Lambda^0_b$ to $\overline{B}^0$ lifetimes / LHCb collaboration The LHCb measurement of the lifetime ratio of the $\Lambda^0_b$ to the $\overline{B}^0$ meson is updated using data corresponding to an integrated luminosity of 3.0 fb$^{-1}$ collected using 7 and 8 TeV centre-of-mass energy $pp$ collisions at the LHC. [...] arXiv:1402.6242 ; CERN-PH-EP-2014-027 ; LHCB-PAPER-2014-003. - 2014. - 11 p. Preprint - Related data file(s)

2014-02-19
04:12
 Measurement of charged particle multiplicities and densities in $pp$ collisions at $\sqrt{s}$ = 7 TeV in the forward region / LHCb collaboration Charged particle multiplicities are studied in proton-proton collisions in the forward region at a centre-of-mass energy of $\sqrt{s} = 7\;$TeV with data collected in 2010 by the LHCb detector. [...] arXiv:1402.4430 ; CERN-PH-EP-2014-023 ; LHCB-PAPER-2013-070. - 2014. - 23 p. Preprint - Related data file(s)

2014-02-16
19:22
 Measurements of the $t\bar{t}$ charge asymmetry using the dilepton decay channel in pp collisions at $\sqrt{s}$=7 TeV / CMS Collaboration The $t\bar{t}$ charge asymmetry in proton-proton collisions at $\sqrt{s}$=7 TeV is measured using the dilepton decay channel ($ee, e\mu,$ or $\mu\mu$). [...] arXiv:1402.3803 ; CMS-TOP-12-010 ; CERN-PH-EP-2014-010. - 2014. - 33 p. Preprint

2014-02-14
04:33
 A study of CP violation in $B^\pm \to D K^\pm$ and $B^\pm \to D \pi^\pm$ decays with $D \to K^0_{\rm S} K^\pm \pi^\mp$ final states / LHCb Collaboration A first study of CP violation in the decay modes $B^\pm\to [K^0_{\rm S} K^\pm \pi^\mp]_D h^\pm$ and $B^\pm\to [K^0_{\rm S} K^\mp \pi^\pm]_D h^\pm$, where $h$ labels a $K$ or $\pi$ meson and $D$ labels a $D^0$ or $\overline{D}^0$ meson, is performed. [...] arXiv:1402.2982 ; CERN-PH-EP-2014-017 ; LHCB-PAPER-2013-068. - 2014. - 21 p. Preprint - Related data file(s)

2014-02-13
08:22
 Search for invisible decays of a Higgs boson produced in association with a Z boson in ATLAS / ATLAS Collaboration A search for evidence of invisible-particle decay modes of a Higgs boson produced in association with a Z boson at the Large Hadron Collider is presented. [...] arXiv:1402.3244 ; CERN-PH-EP-2013-210. - 2014. - 19 p. Previous draft version - Preprint

2014-02-12
04:27
 Measurements of the $B^+$, $B^0$, $B_s^0$ meson and $\Lambda_b^0$ baryon lifetimes / LHCb collaboration Measurements of $b$-hadron lifetimes are reported using $pp$ collision data, corresponding to an integrated luminosity of 1.0fb$^{-1}$, collected by the LHCb detector at a centre-of-mass energy of $7$Tev. [...] arXiv:1402.2554 ; LHCB-PAPER-2013-065 ; CERN-PH-EP-2014-018. - 2014. - 28 p. Preprint - Related data file(s)

2014-02-12
04:27
 Measurement of $\Upsilon$ production in $pp$ collisions at $\sqrt{s}=2.76$ TeV / LHCb collaboration The production of $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of 3.3 $pb^{-1}$ collected in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=2.76$ TeV. [...] arXiv:1402.2539 ; CERN-PH-EP-2014-016 ; LHCB-PAPER-2013-066. - 2014. - 21 p. Preprint - Related data file(s)

2014-02-12
01:14
 Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$ = 7 and 8 TeV with the ATLAS detector / ATLAS Collaboration A search is reported for a neutral Higgs boson in the decay channel $H → Z\gamma, Z → l^+ l^- (l = e,µ)$, using 4.5 fb$^{-1}$ of pp collisions at $\sqrt{s}$ = 7 TeV and 20.3 fb$^{-1}$ of pp collisions at $\sqrt{s}$ = 8 TeV, recorded by the ATLAS detector at the CERN Large Hadron Collider. [...] arXiv:1402.3051 ; CERN-PH-EP-2014-006. - 2014. - 20 p. Previous draft version - Preprint