# CERN Preprints

2015-04-01
17:02
 Search for New Phenomena in Dijet Angular Distributions in Proton-Proton Collisions at $\sqrt{s} = 8$ TeV Measured with the ATLAS Detector A search for new phenomena in LHC proton-proton collisions at a center-of-mass energy of $\sqrt{s}=8$ TeV was performed with the ATLAS detector using an integrated luminosity of 17.3 fb$^{-1}$. [...] CERN-PH-EP-2015-067. - 2015. Fulltext - Previous draft version

2015-04-01
07:57
 Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in gluon fusion / Caola, Fabrizio (CERN) ; Henn, Johannes M (Princeton U.) ; Melnikov, Kirill (Karlsruhe, Inst. Technol) ; Smirnov, Alexander V (Lomonosov Moscow State U.) ; Smirnov, Vladimir A (SINP, Moscow) We compute the part of the two-loop virtual amplitude for the process $gg \to V_1 V_2 \to (l_1 \bar l'_{1}) (l_2 \bar l'_2)$, where $V_{1,2}$ are arbitrary electroweak gauge bosons, that receives contributions from loops of massless quarks. [...] arXiv:1503.08759 ; TTP15-013 ; CERN-PH-TH-2015-069. - 2015. - 15 p. Preprint - Full text

2015-04-01
07:57
 Effective operators in SUSY, superfield constraints and searches for a UV completion / Dudas, E (Ecole Polytechnique, CPHT ; DESY) ; Ghilencea, D M (CERN ; Bucharest, IFIN-HH) We discuss the role of a class of higher dimensional operators in 4D N=1 supersymmetric effective theories. [...] arXiv:1503.08319 ; CERN-PH-TH-2015-048 ; CPHT-RR-008.0315. - 2015. - 30 p. Preprint - Full text

2015-04-01
07:54
 Coherent $\rho^0$ photoproduction in ultra-peripheral Pb--Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}}} = 2.76$ TeV / ALICE Collaboration We report the first measurement at the LHC of coherent photoproduction of $\rho^0$ mesons in ultra-peripheral Pb-Pb collisions. [...] arXiv:1503.09177 ; CERN-PH-EP-2015-082. - 2015. - 23 p. Preprint - Full text

2015-04-01
07:54
 Potential performance for Pb-Pb, p-Pb and p-p collisions in a future circular collider / Schaumann, Michaela (CERN) The hadron collider studied in the Future Circular Collider (FCC) project could operate with protons and lead ions in similar operation modes as the LHC. [...] arXiv:1503.09107. - 2015. - 23 p. Preprint

2015-04-01
07:54
 The Spin Structure Function $g_1^{\rm p}$ of the Proton and a Test of the Bjorken Sum Rule / Adolph, C ; Akhunzyanov, R ; Alexeev, M G ; Alexeev, G D ; Amoroso, A ; Andrieux, V ; Anosov, V ; Austregesilo, A ; Azevedo, C ; Badelek, B et al. New results for the double spin asymmetry $A_1^{\rm p}$ and the proton longitudinal spin structure function $g_1^{\rm p}$ are presented. [...] arXiv:1503.08935. - 2015. - 19 p. Preprint

2015-04-01
07:54
 Search for New Physics in SHiP and at future colliders / Graverini, Elena (Zurich U.) ; Serra, Nicola (Zurich U.) ; Storaci, Barbara (Zurich U.) SHiP is a newly proposed fixed-target experiment at the CERN SPS with the aim of searching for hidden particles that interact very weakly with SM particles. [...] arXiv:1503.08624. - 2015. - 5 p. Preprint

2015-04-01
07:52
 Phenomenological Aspects of No-Scale Inflation Models / Ellis, John (King’s Coll. London ; CERN) ; Garcia, Marcos A G (Minnesota U.) ; Nanopoulos, Dimitri V (Texas A-M ; HARC, Woodlands ; Athens Academy) ; Olive, Keith A (Minnesota U.) We discuss phenomenological aspects of no-scale supergravity inflationary models motivated by compactified string models, in which the inflaton may be identified either as a K\"ahler modulus or an untwisted matter field, focusing on models that make predictions for the scalar spectral index $n_s$ and the tensor-to-scalar ratio $r$ that are similar to the Starobinsky model. [...] arXiv:1503.08867 ; KCL-PH-TH-2015-14 ; LCTS-2015-06 ; CERN-PH-TH-2015-064 ; ACT-03-15 ; UMN-TH-3426-15 ; FTPI-MINN-15-12. - 2015. - 41 p. Preprint - Full text

2015-04-01
07:52
 Non-linear curvature inhomogeneities and backreaction for relativistic viscous fluids / Giovannini, Massimo (CERN ; INFN, Milan) The non-perturbative curvature inhomogeneities induced by relativistic viscous fluids are not conserved in the large-scale limit. [...] arXiv:1503.08739 ; CERN-PH-TH-2015-068. - 2015. - 25 p. Preprint - Full text

2015-03-31
19:44
 Physics at CLIC / Redford, Sophie (CERN) ; Roloff, Philipp Gerhard (CERN) CLIC is a concept for a future linear collider which would use two-beam acceleration to produce e+e- collisions with a centre-of-mass energy of 3 TeV. A staging scenario would also provide collisions at lower centre-of-mass energies, provisionally 350 GeV and 1.4 TeV. [...] CLICdp-Conf-2015-003.- Geneva : CERN, 2015 - 12. Fulltext: PDF;