# CERN Preprints

2015-07-31
19:13
 Determination of the ratio of $b$-quark fragmentation fractions $f_s/f_d$ in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector With an integrated luminosity of 2.47 fb$^{-1}$ recorded by the ATLAS experiment at the LHC, the exclusive decays $B_{s}^{0}\rightarrow J/\psi\phi$ and $B_{d}^{0}\rightarrow J/\psi K^{*0}$ of $B$ mesons produced in $pp$ collisions at $\sqrt{s}=7$ TeV are used to determine the ratio of fragmentation fractions $f_s/f_d$. [...] CERN-PH-EP-2015-165. - 2015. Fulltext - Previous draft version

2015-07-31
15:17
 Copper-to-silicon-carbide joints development for Future CLIC Hom Dampers / Gil Costa, Miguel (CERN) Ceramic-to-metal joints have been of paramount importance for the nuclear and aeronautic industry since the last century. [...] CERN-ACC-2015-0080. - 2015. - 12 p. Full text

2015-07-31
15:01
 Protocols for the LEP/SPS control system / Altaber, J ; Anderssen, P S ; Kostro, K ; Lord, D CERN-SPS-Tech-Note-86-008-ACC ; SPS-ACC-Note-86-8. - 1986. - 24 p. Full text

2015-07-31
14:38
 $B$ flavor tagging using charm decays at the LHCb experiment An algorithm is described for tagging the flavour content at production of neutral $B$ mesons in the LHCb experiment. [...] CERN-PH-EP-2015-193 ; LHCB-PAPER-2015-027. - 2015. Fulltext - Previous draft version - Related data file(s)

2015-07-31
07:35
 Relaxing the Electroweak Scale: the Role of Broken dS Symmetry / Patil, Subodh P ; Schwaller, Pedro Recently, a novel mechanism to address the hierarchy problem has been proposed [1], where the hierarchy between weak scale physics and any putative `cutoff' $M$ is translated into a parametrically large field excursion for the so-called relaxion field, driving the Higgs mass to values much less than $M$ through cosmological dynamics. [...] arXiv:1507.08649 ; CERN-PH-TH-2015-179. - 2015. - 16 p. Preprint - Full text

2015-07-30
07:53
 $B$ flavour tagging using charm decays at the LHCb experiment / LHCb collaboration An algorithm is described for tagging the flavour content at production of neutral $B$ mesons in the LHCb experiment. [...] arXiv:1507.07892 ; CERN-PH-EP-2015-193 ; LHCB-PAPER-2015-027. - 2015. Preprint - Full text

2015-07-30
07:53
 Global Parton Distributions for the LHC Run II / Ball, Richard D We review the next generation global PDF sets: NNPDF3.0, MMHT14 and CT14. [...] arXiv:1507.07891 ; CERN-PH-TH-2015-177 ; EDINBURGH 2015-15. - 2015. - 15 p. Preprint - Full text

2015-07-30
07:53
 Interplay among transversity induced asymmetries in hadron leptoproduction / Compass Collaboration In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. [...] arXiv:1507.07593 ; CERN-PH-EP_2015-199. - 2015. Preprint - Full text

2015-07-30
07:53
 A perturbed lepton-specific two-Higgs-doublet model facing experimental hints for physics beyond the Standard Model / Crivellin, Andreas ; Heeck, Julian ; Stoffer, Peter The BaBar, Belle, and LHCb collaborations have reported evidence for new physics in $B\to D\tau\nu$ and $B\to D^*\tau\nu$ of approximately $3.8\sigma$. [...] arXiv:1507.07567 ; CERN-PH-TH-2015-168 ; ULB-15-13. - 2015. - 14 p. Preprint - Full text

2015-07-30
07:52
 Lorentz violation in gravity / Blas, Diego The study of gravitational theories without Lorentz invariance plays an important role to understand different aspects of gravitation. [...] arXiv:1507.07687 ; CERN-PH-TH-2015-143. - 2015. - 4 p. Preprint - Full text