2013-12-05
04:17 |
Dynamical sectors of a relativistic two particle model
/ Dominici, Daniele (INFN, Florence ; Florence U.) ; Gomis, Joaquim (CERN ; ICC, Barcelona U. ; Barcelona U., ECM) ; Kamimura, Kiyoshi (Toho U.) ; Longhi, Giorgio (Florence U. ; INFN, Florence)
We reconsider a model of two relativistic particles interacting via a multiplicative potential, as an example of a simple dynamical system with sectors, or branches, with different dynamics and degrees of freedom.The presence or absence of sectors depends on the values of rest masses. Some aspects of the canonical quantization are described. [...]
arXiv:1312.1000; CERN-PH-TH-2013-284; ICCUB-13-243.-
2014 - 15 p.
- Published in : Phys. Rev. D 89 (2014) 045001
External link: Preprint
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2013-11-27
04:19 |
Monotop phenomenology at the Large Hadron Collider
/ Agram, Jean-Laurent (Haute Alsace U., IUT Colmar) ; Andrea, Jeremy (Strasbourg, IPHC) ; Buttignol, Michael (Haute Alsace U., IUT Colmar) ; Conte, Eric (Haute Alsace U., IUT Colmar) ; Fuks, Benjamin (Strasbourg, IPHC ; CERN)
We investigate new physics scenarios where systems comprised of a single top quark accompanied by missing transverse energy, dubbed monotops, can be produced at the LHC. Following a simplified model approach, we describe all possible monotop production modes via an effective theory and estimate the sensitivity of the LHC, assuming 20 fb$^{-1}$ of collisions at a center-of-mass energy of 8 TeV, to the observation of a monotop state. [...]
arXiv:1311.6478; CERN-PH-TH-2013-277.-
2014 - 17 p.
- Published in : Phys. Rev. D 89 (2014) 014028
External link: Preprint
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2013-10-28
04:12 |
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2013-10-18
04:16 |
A No-Scale Framework for Sub-Planckian Physics
/ Ellis, John (King's Coll. London ; CERN) ; Nanopoulos, Dimitri V (Texas A-M) ; Olive, Keith A (Minnesota U.)
We propose a minimal model framework for physics below the Planck scale with the following features: (i) it is based on no-scale supergravity, as favoured in many string compactifications, (ii) it incorporates Starobinsky-like inflation, and hence is compatible with constraints from the Planck satellite, (iii) the inflaton may be identified with a singlet field in a see-saw model for neutrino masses, providing an efficient scenario for reheating and leptogenesis, (iv) supersymmetry breaking occurs with an arbitrary scale and a cosmological constant that vanishes before radiative corrections, (v) regions of the model parameter space are compatible with all LHC, Higgs and dark matter constraints..
arXiv:1310.4770; KCL-PH-TH-2013-33; LCTS-2013-22; CERN-PH-TH-2013-241; ACT-8-13; MIFPA-13-46; UMN-TH-3309-13; FTPI-MINN-13-38.-
2014 - 5 p.
- Published in : Phys. Rev. D 89 (2014) 043502
External link: Preprint
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2013-10-11
04:20 |
Revisiting slepton pair production at the Large Hadron Collider
/ Fuks, Benjamin (CERN ; Strasbourg, IPHC) ; Klasen, Michael (Munster U., ITP) ; Lamprea, David R (Munster U., ITP) ; Rothering, Marcel (Munster U., ITP)
Motivated by the shift in experimental attention towards electroweak supersymmetric particle production at the CERN LHC, we update in this paper our precision predictions at next-to-leading order of perturbative QCD matched to resummation at the next-to-leading logarithmic accuracy for direct slepton pair production in proton-proton collisions. Simplified models, now commonly adopted by the experimental collaborations for selectrons and smuons as well as mixing staus, are used as benchmarks for total cross sections at achieved and future center-of-mass energies. [...]
arXiv:1310.2621; CERN-PH-TH-2013-240; MS-TP-13-35.-
2014 - 31 p.
- Published in : J. High Energy Phys. 01 (2014) 168
External link: Preprint
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2013-10-08
04:24 |
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2013-10-03
04:19 |
Polarized Parton Distributions at an Electron-Ion Collider
/ Ball, Richard D (Edinburgh U.) ; Forte, Stefano (Milan U. ; INFN, Milan) ; Guffanti, Alberto (Bohr Inst.) ; Nocera, Emanuele R (Milan U. ; INFN, Milan) ; Ridolfi, Giovanni (Genoa U. ; INFN, Genoa) ; Rojo, Juan (CERN)
/NNPDF Collaboration
We study the potential impact of inclusive deep-inelastic scattering data from a future electron-ion collider (EIC) on longitudinally polarized parton distribution (PDFs). We perform a PDF determination using the NNPDF methodology, based on sets of deep-inelastic EIC pseudodata, for different realistic choices of the electron and proton beam energies. [...]
arXiv:1310.0461; CERN-PH-TH-2013-210; EDINBURGH 2013-26; IFUM-1016-FT.-
2014 - 11 p.
- Published in : Phys. Lett. B 728 (2014) 524-531
External link: Preprint
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2013-09-23
15:40 |
Production processes at extremely high energies
/ Gastmans, R (Leuven U.) ; (Wisconsin U., Madison) ; (CERN ; Harvard U.)
The production processes are identified that contribute to the rise of the total cross section in proton-proton scattering at extremely high energies, s->~. At such energies, the scattering can be described by a black disk (completely absorptive) with a radius expanding logarithmically with energy surrounded by a gray fringe (partially absorptive). [...]
CERN-PH-TH-2012-230.-
2013 - 5 p.
- Published in : Phys. Lett. B 720 (2013) 205–209
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2013-09-05
04:16 |
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2013-08-29
06:19 |
Cosmological Parameter Estimation with Large Scale Structure Observations
/ Di Dio, Enea (Geneva U., Dept. Theor. Phys.) ; Montanari, Francesco (Geneva U., Dept. Theor. Phys.) ; Durrer, Ruth (Geneva U., Dept. Theor. Phys.) ; Lesgourgues, Julien (IPT, Lausanne ; CERN ; Annecy, LAPTH)
We estimate the sensitivity of future galaxy surveys to cosmological parameters, using the redshift dependent angular power spectra of galaxy number counts, $C_\ell(z_1,z_2)$, calculated with all relativistic corrections at first order in perturbation theory. We pay special attention to the redshift dependence of the non-linearity scale and present Fisher matrix forecasts for Euclid-like and DES-like galaxy surveys. [...]
arXiv:1308.6186; LAPTH-037-13; CERN-PH-TH-2013-155.-
2014 - 25 p.
- Published in : J. Cosmol. Astropart. Phys. 01 (2014) 042
External link: Preprint
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