Showing 2015Show all

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hep-lat2015★ 82 cited

Calculation of the hadronic vacuum polarization disconnected contribution to the muon anomalous magnetic moment

T. Blum, P. A. Boyle, T. Izubuchi +7

We report the first lattice QCD calculation of the hadronic vacuum polarization disconnected contribution to the muon anomalous magnetic moment at physical pion mass. The calculati…

physics.ins-det2015

Candidate eco-friendly gas mixtures for MPGDs

L. Benussi, S. Bianco, G. Saviano +13

Modern gas detectors for detection of particles require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be l…

physics.ins-det2015★ 2 cited

Fiber Bragg Grating (FBG) sensors as flatness and mechanical stretching sensors

D. Abbaneo, M. Abbas, M. Abbrescia +153

A novel approach which uses Fibre Bragg Grating (FBG) sensors has been utilised to assess and monitor the flatness of Gaseous Electron Multipliers (GEM) foils. The setup layout and…

hep-lat2015★ 38 cited

Large volumes and spectroscopy of walking theories

L. Del Debbio, B. Lucini, A. Patella +2

A detailed investigation of finite size effects is performed for SU(2) gauge theory with two fermions in the adjoint representation, which previous lattice studies have shown to be…

physics.ins-det2015★ 16 cited

MPX Detectors as LHC Luminosity Monitor

Andre Sopczak, Babar Ali, Nedaa Asbah +15

A network of 16 Medipix-2 (MPX) silicon pixel devices was installed in the ATLAS detector cavern at CERN. It was designed to measure the composition and spectral characteristics of…

nucl-ex2015★ 21 cited

Jet shapes in pp and Pb-Pb collisions at ALICE

Leticia Cunqueiro

The aim of this work is to explore possible medium modifications to the substructure of inclusive charged jets in Pb-Pb relative to proton-proton collisions by measuring a set of j…

physics.atom-ph2015★ 1 cited

Identification of autoionizing states of atomic chromium for resonance photo-ionization at the ISOLDE-RILIS

T Day Goodacre, K Chrysalidis, D Fedorovc +6

The resonance ionization laser ion source (RILIS) is the principal ion source of the ISOLDE radioactive beam facility based at CERN. Using the method of in-source resonance ionizat…

hep-th2015★ 8 cited

Comments on the nilpotent constraint of the goldstino superfield

D. M. Ghilencea

Superfield constraints were often used in the past, in particular to describe the Akulov-Volkov action of the goldstino by a superfield formulation with $L=(Φ^\dagger Φ)_D + [(fΦ)_…

hep-ph2015★ 74 cited

Trinification can explain the di-photon and di-boson LHC anomalies

Giulio Maria Pelaggi, Alessandro Strumia, Elena Vigiani

LHC data show a diphoton excess at 750 GeV and a less significant diboson excess around 1.9 TeV. We propose trinification as a common source of both anomalies. The 1.9 TeV excess c…

hep-th2015★ 10 cited

Supersymmetry, Cosmological Constant and Inflation: Towards a fundamental cosmic picture via "running vacuum"

Nick E. Mavromatos

On the occasion of a century from the proposal of General relativity by Einstein, I attempt to tackle some open issues in modern cosmology, via a toy but non-trivial model. Specifi…

astro-ph.CO2015★ 90 cited

Post-Inflationary Gravitino Production Revisited

John Ellis, Marcos A. G. Garcia, Dimitri V. Nanopoulos +2

We revisit gravitino production following inflation. As a first step, we review the standard calculation of gravitino production in the thermal plasma formed at the end of post-inf…

nucl-ex2015★ 78 cited

Precision Mass Measurements of 129-131Cd and Their Impact on Stellar Nucleosynthesis via the Rapid Neutron Capture Process

D. Atanasov, P. Ascher, K. Blaum +17

Masses adjacent to the classical waiting-point nuclide 130Cd have been measured by using the Penning- trap spectrometer ISOLTRAP at ISOLDE/CERN. We find a significant deviation of…

physics.acc-ph2015★ 98 cited

AWAKE, The Advanced Proton Driven Plasma Wakefield Acceleration Experiment at CERN

E. Gschwendtner, E. Adli, L. Amorim +88

The Advanced Proton Driven Plasma Wakefield Acceleration Experiment (AWAKE) aims at studying plasma wakefield generation and electron acceleration driven by proton bunches. It is a…

physics.ins-det2015★ 12 cited

Charge Transfer Properties Through Graphene for Applications in Gaseous Detectors

S. Franchino, D. Gonzalez-Diaz, R. Hall-Wilton +13

Graphene is a single layer of carbon atoms arranged in a honeycomb lattice with remarkable mechanical and electrical properties. Regarded as the thinnest and narrowest conductive m…

hep-th2015★ 54 cited

Weak and strong coupling equilibration in nonabelian gauge theories

Liam Keegan, Aleksi Kurkela, Paul Romatschke +2

We present a direct comparison studying equilibration through kinetic theory at weak coupling and through holography at strong coupling in the same set-up. The set-up starts with a…

nucl-th2015

The sensitivity of R_pA to color recombination effects

Korinna Christina Zapp, Guilherme Milhano, Urs Achim Wiedemann

In hadronization models with color recombination, partons are allowed to regroup into color singlet structures that are different from those determined by the perturbative parton s…

physics.ins-det2015★ 11 cited

Effects of High Charge Densities in Multi-GEM Detectors

S. Franchino, D. Gonzalez Diaz, R. Hall-Wilton +9

A comprehensive study, supported by systematic measurements and numerical computations, of the intrinsic limits of multi-GEM detectors when exposed to very high particle fluxes or…

hep-ph2015★ 10 cited

The Diboson Excess: Experimental Situation and Classification of Explanations; A Les Houches Pre-Proceeding

Johann Brehmer, Gustaaf Brooijmans, Giacomo Cacciapaglia +21

We examine the `diboson' excess at TeV seen by the LHC experiments in various channels. We provide a comparison of the excess significances as a function of the mass of th…

hep-th2015★ 67 cited

All three-loop four-point correlators of half-BPS operators in planar N=4 SYM

Dmitry Chicherin, James Drummond, Paul Heslop +1

We obtain the planar correlation function of four half-BPS operators of arbitrary weights, up to three loops. Our method exploits only elementary properties of the integrand of the…

hep-ph2015★ 7 cited

Energy spectra of massive two-body decay products and mass measurement

Kaustubh Agashe, Roberto Franceschini, Sungwoo Hong +1

We have recently established a new method for measuring the mass of unstable particles produced at hadron colliders based on the analysis of the energy distribution of a massless p…

hep-ph2015★ 1.2k cited

Herwig 7.0 / Herwig++ 3.0 Release Note

Johannes Bellm, Stefan Gieseke, David Grellscheid +13

A major new release of the Monte Carlo event generator Herwig++ (version 3.0) is now available. This release marks the end of distinguishing Herwig++ and HERWIG development and the…

hep-ph2015★ 9 cited

Sub-jet structure as a discriminating quenching probe

Xiaoming Zhang, Liliana Apolinário, José Guilherme Milhano +1

In this work, we propose a new class of jet substructure observables which, unlike fragmentation functions, are largely insensitive to the poorly known physics of hadronization. We…

hep-ph2015★ 83 cited

Indirect Constraints on the Scalar Di-Photon Resonance at the LHC

Florian Goertz, Jernej F. Kamenik, Andrey Katz +1

Motivated by the tantalizing excesses recently reported in the di-photon invariant mass spectrum at the LHC, we scrutinize some implications of scalar di-photon resonances in high…

astro-ph.CO2015★ 17 cited

Time of flight of ultra-relativistic particles in a realistic Universe: a viable tool for fundamental physics?

G. Fanizza, M. Gasperini, G. Marozzi +1

Including the metric fluctuations of a realistic cosmological geometry we reconsider an earlier suggestion that measuring the relative time-of-flight of ultra-relativistic particle…