# CERN Preprints

2017-08-16
07:46
 Direct determination of Wilson coefficients using $B^0\to K^{*0}\mu^+\mu^-$ decays / Hurth, T. ; Langenbruch, C. ; Mahmoudi, F. A method to directly determine the Wilson coefficients for rare $b\to s$ transitions using $B^0\to K^{*0}\mu^+\mu^-$ decays in an unbinned maximum likelihood fit is presented. [...] arXiv:1708.04474 ; CERN-TH-2017-178 ; MITP-17-053. - 40 p. Preprint

2017-08-16
07:12
 Design of the Palmer Pickup for Stochastic Pre-Cooling of Hot Rare Isotopes at the CR / Barker, D J (Darmstadt, GSI) ; Dimopoulou, C (Darmstadt, GSI) ; Peschke, C (Darmstadt, GSI) ; Thorndahl, L (CERN) We report on the design of a Faltin type pickup for the stochastic pre-cooling of rare isotope beams at 740 MeV/u, using a bandwidth of 1-2 GHz, for the Collector Ring (CR) in the FAIR project at GSI. The design difficulties inherent in Faltin rails at these frequencies are described. [...] COOL-2015-FRWAUD03.- 2015 - 4 p. - Published in : (2015) Fulltext: PDF; External link: Fulltext

2017-08-16
07:12
 ISOLTRAP's multi-reflection time-of-flight mass separator/spectrometer / Wolf, R N ; Wienholtz, F ; Atanasov, D ; Beck, D ; Blaum, K ; Borgmann, Ch ; Herfurth, F ; Kowalska, M (CERN) ; Kreim, S ; Litvinov, Yu A et al. The online precision mass spectrometer ISOLTRAP at ISOLDE/CERN was recently upgraded by adding a multi-reflection time-of-flight mass separator/spectrometer (MR-ToF MS) between the linear radio-frequency ion trap and the two Penning traps already in place. As a mass separator, the MR-ToF device has improved significantly ISOLTRAP's capability of purification of contaminated ion beams. [...] 2013 - 11 p. - Published in : Int. J. Mass Spectrometry 349-350 (2013) 123-133

2017-08-15
11:12
 Search for diboson resonances with boson-tagged jets in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration Narrow resonances decaying into $WW$, $WZ$ or $ZZ$ boson pairs are searched for in 36.7 fb $^{-1}$ of proton--proton collision data at a centre-of-mass energy of $\sqrt{s}=13$ TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. [...] arXiv:1708.04445 ; CERN-EP-2017-147. - 2017. - 40 p, 40 p. Fulltext - Previous draft version

2017-08-15
09:13
 Measurement of the exclusive $\gamma \gamma \rightarrow \mu^+ \mu^-$ process in proton--proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector The production of exclusive $\gamma \gamma \rightarrow \mu^+ \mu^-$ events in proton--proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC, using data corresponding to an integrated luminosity of 3.2 fb$^{-1}$. [...] CERN-EP-2017-151. - 2017. Fulltext - Previous draft version

2017-08-15
07:22
 Measurement of the exclusive $\gamma \gamma \rightarrow \mu^+ \mu^-$ process in proton--proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration The production of exclusive $\gamma \gamma \rightarrow \mu^+ \mu^-$ events in proton--proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC, using data corresponding to an integrated luminosity of 3.2 fb$^{-1}$. [...] arXiv:1708.04053 ; CERN-EP-2017-151. - 35 p.

2017-08-15
07:22
 $\mathcal{N}{=}1$ supersymmetric indices and the four-dimensional A-model / Closset, Cyril (CERN) ; Kim, Heeyeon (Perimeter Inst. Theor. Phys.) ; Willett, Brian (Santa Barbara, KITP) We compute the supersymmetric partition function of $\mathcal{N}{=}1$ supersymmetric gauge theories with an $R$-symmetry on $\mathcal{M}_4 \cong \mathcal{M}_{g,p}\times S^1$, a principal elliptic fiber bundle of degree $p$ over a genus-$g$ Riemann surface, $\Sigma_g$. [...] arXiv:1707.05774. - 92 p. Preprint

2017-08-15
07:22
 Impact of the heavy quark matching scales in PDF fits / xFitter Developers Team Collaboration We investigate the impact of displaced heavy quark matching scales in a global fit. [...] arXiv:1707.05343. - 18 p. Preprint

2017-08-15
07:22
 Production of extra quarks decaying to Dark Matter beyond the Narrow Width Approximation at the LHC / Moretti, Stefano (Rutherford ; Southampton U. ; CERN) ; O'Brien, Dermot (Rutherford ; Southampton U.) ; Panizzi, Luca (Rutherford ; Southampton U.) ; Prager, Hugo (Rutherford ; Southampton U.) This paper explores the effects of finite width in processes of pair production of an extra heavy quark with charge 2/3 (top partner) and its subsequent decay into a bosonic Dark Matter (DM) candidate -- either scalar or vector -- and SM up-type quarks at the Large Hadron Collider (LHC). [...] arXiv:1705.07675. - 19 p. Preprint

2017-08-15
07:22
 Withdrawn: Tau polarization as CP diagnostic for a light Higgs boson at a photon collider / Godbole, Rohini M. (Bangalore, Indian Inst. Sci.) ; Singh, Ritesh K ; Kraml, Sabine Unfortunately, we have discovered a bug in the computer program which invalidates the numerical results of our paper. [...] hep-ph/0501027 ; IISC-CHEP-16-04 ; CERN-PH-TH-2004-262. - 11 p.