# PH-EP Preprints

2014-04-08
22:59
 Measurement of the ratio $B(t \to Wb)/B(t \to Wq)$ in pp collisions at $\sqrt{s}$ = 8 TeV / CMS Collaboration The ratio of the top-quark branching fractions $R = B(t \to Wb)/B(t \to Wq)$, where the denominator includes the sum over all down-type quarks (q = b, s, d), is measured in the $t\bar{t}$ dilepton final state with proton-proton collision data at $\sqrt{s}$ = 8 TeV from an integrated luminosity of 19.7 inverse-femtobarns, collected with the CMS detector. [...] arXiv:1404.2292 ; CMS-TOP-12-035 ; CERN-PH-EP-2014-052. - 2014. - 37 p. Preprint

2014-04-08
05:05
 Observation of the resonant character of the $Z(4430)^-$ state / LHCb collaboration Resonant structures in $B^0\to\psi'\pi^-K^+$ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using $pp$ collision data corresponding to $\rm 3 fb^{-1}$ collected with the LHCb detector. [...] arXiv:1404.1903 ; LHCB-PAPER-2014-014 ; CERN-PH-EP-2014-061. - 2014. - 10 p. Preprint - Related data file(s) - Related supplementary data file(s)

2014-04-05
18:49
 Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes / CMS Collaboration A search for invisible decays of Higgs bosons is performed using the vector boson fusion and associated ZH production modes. [...] arXiv:1404.1344 ; CMS-HIG-13-030 ; CERN-PH-EP-2014-051. - 2014. - 51 p. Preprint

2014-04-02
04:34
 Evidence for the decay $B_c^+ \rightarrow J/\psi 3\pi^+ 2\pi^-$ / LHCb collaboration Evidence is presented for the decay $B_c+\rightarrow J/\psi 3\pi^+2\pi^-$ using proton-proton collision data, corresponding to an integrated luminosity of 3fb$^{-1}$, collected with the LHCb detector. [...] arXiv:1404.0287 ; CERN-PH-EP-2014-054 ; LHCB-PAPER-2014-009. - 2014. - 12 p. Preprint - Related data file(s)

2014-04-02
04:33
 Evidence for the decay $X(3872)\rightarrow\psi(2S)\gamma$ / LHCb collaboration Evidence for the decay mode $X(3872)\rightarrow\psi(2S)\gamma$ in $B^+\rightarrow X(3872)K^+$ decays is found with a significance of 4.4 standard deviations. [...] arXiv:1404.0275 ; CERN-PH-EP-2014-050 ; LHCB-PAPER-2014-008. - 2014. - 19 p. Preprint - Related data file(s)

2014-04-01
04:36
 Angular analysis of charged and neutral $B \to K \mu^+\mu^-$ decays / LHCb collaboration The angular distributions of the rare decays $B^+ \to K^+\mu^+\mu^-$ and $B^0 \to K^0_{\rm\scriptscriptstyle S}\mu^+\mu^-$ are studied with data corresponding to 3$~$fb$^{-1}$ of integrated luminosity, collected in proton-proton collisions at 7 and 8$~$TeV centre-of-mass energies with the LHCb detector. [...] arXiv:1403.8045 ; LHCB-PAPER-2014-007 ; CERN-PH-EP-2014-056. - 2014. - 27 p. Preprint - Related data file(s) - Related supplementary data file(s)

2014-04-01
04:36
 Differential branching fractions and isospin asymmetries of $B \to K^{(*)}\mu^+\mu^+$ decays / LHCb collaboration The isospin asymmetries of $B \to K\mu^+\mu^-$ and $B \to K^{*}\mu^+\mu^-$ decays and the partial branching fractions of the $B^0 \to K^0\mu^+\mu^-$, $B^+ \to K^+\mu^+\mu^-$ and $B^+ \to K^{*+}\mu^+\mu^-$ decays are measured as functions of the dimuon mass squared, $q^2$. [...] arXiv:1403.8044 ; LHCB-PAPER-2014-006 ; CERN-PH-EP-2014-055. - 2014. - 23 p. Preprint - Related data file(s) - Related supplementary data file(s)

2014-04-01
00:12
 Search for dark matter in events with a $Z$ boson and missing transverse momentum in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector / ATLAS Collaboration A search is presented for production of dark matter particles recoiling against a leptonically decaying $Z$ boson in 20.3 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector at the Large Hadron Collider. [...] arXiv:1404.0051 ; CERN-PH-EP-2013-231. - 2014. - 8 p. Previous draft version - Preprint

2014-03-28
16:24
 Measurement of the t-channel single-top-quark production cross section and of the |$V_{tb}$| CKM matrix element in pp collisions at $\sqrt{s}$ = 8 TeV / CMS Collaboration Measurements are presented of the t-channel single-top-quark production cross section in proton-proton collisions at $\sqrt{s}$ = 8 TeV. [...] arXiv:1403.7366 ; CMS-TOP-12-038-003 ; CERN-PH-EP-2014-032. - 2014. - 41 p. Additional information for the analysis - CMS AuthorList - Full text

2014-03-25
10:14
 Search for top quark decays $t \rightarrow qH$ with $H \to \gamma\gamma$ using the ATLAS detector / ATLAS Collaboration A search is performed for flavour-changing neutral currents in the decay of a top quark to an up-type ($c, u$) quark and a Higgs boson, where the Higgs boson decays to two photons. [...] arXiv:1403.6293 ; CERN-PH-EP-2014-036. - 2014. - 45 p. Previous draft version - Preprint