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CERN Document Server Pronađeno je 2,049 zapisa  1 - 10slijedećikraj  idi na zapis: Pretraživanje je potrajalo 0.53 sekundi 
1.
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Stringent Pulsar Timing Bounds on Light Scalar Couplings to Matter / Benisty, David (Cambridge U., DAMTP ; Cambridge U., KICC) ; Brax, Philippe (IPhT, Saclay ; CERN) ; Davis, Anne-Christine (Cambridge U., DAMTP ; Cambridge U., KICC)
Pulsar Timing constraints on scalar-tensor theories with conformal and disformal couplings to matter are discussed. Reducing the dynamics to the motion in the centre of mass frame and using the mean anomaly parametrisation, we find the first post-Newtonian corrections induced by the conformal and disformal interactions in the form of a generalized quasi-Keplerian solution. [...]
arXiv:2212.03098; CERN-TH-2022-207.- 2023-03-15 - 22 p. - Published in : Phys. Rev. D 107 (2023) 064049 Fulltext: 2212.03098 - PDF; Publication - PDF;
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2.
(91)
Multiscale constraints on scalar-field couplings to matter: The geodetic and frame-dragging effects / Benisty, David (Cambridge U., DAMTP ; Cambridge U., KICC) ; Brax, Philippe (IPhT, Saclay ; CERN) ; Davis, Anne-Christine (Cambridge U., DAMTP ; Cambridge U., KICC)
The impact of light scalars coupled conformally and disformally to matter on the geodetic and frame-dragging (FD) precessions is calculated. For larger frequencies the disformal interaction becomes increasingly relevant. [...]
arXiv:2305.19977.- 2023-09-15 - 15 p. - Published in : Phys. Rev. D 108 (2023) 063031 Fulltext: 2305.19977 - PDF; Publication - PDF;
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3.
(33)
Ultrahigh frequency primordial gravitational waves beyond the kHz: The case of cosmic strings / Servant, Géraldine (DESY ; Hamburg U., Inst. Theor. Phys. II ; CERN) ; Simakachorn, Peera (Valencia U., IFIC)
We investigate gravitational-wave backgrounds (GWBs) of primordial origin that would manifest only at ultra-high frequencies, from kilohertz to 100 gigahertz, and leave no signal at either LIGO, Einstein Telescope, Cosmic Explorer, LISA, or pulsar-timing arrays. We focus on GWBs produced by cosmic strings and make predictions for the GW spectra scanning over high-energy scale (beyond $10^{10}$ GeV) particle physics parameters. [...]
arXiv:2312.09281; DESY-23-202; CERN-TH-2023-226.- 2024-05-15 - 24 p. - Published in : Phys. Rev. D 109 (2024) 103538 Fulltext: 2312.09281 - PDF; Publication - PDF;
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4.
(29)
Long-range forces between nonidentical black holes with non-BPS extremal limits / Cremonini, S. (Lehigh U.) ; Cvetic, M. (Pennsylvania U. ; Maribor U. ; CERN) ; Pope, C.N. (Texas A-M ; Cambridge U., DAMTP) ; Saha, A. (Texas A-M)
Motivated by recent studies of long-range forces beween identical black holes, we extend these considerations by investigating the forces between two non-identical black holes. We focus on classes of theories where charged black holes can have extremal limits that are not BPS. [...]
arXiv:2207.00609; UPR-1231-T; CERN-TH-2022-112; MI-HET-781.- 2022-10-13 - 27 p. - Published in : Phys. Rev. D 106 (2022) 086007 Fulltext: 2207.00609 - PDF; Publication - PDF;
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5.
(27)
Back to the origins of brane-antibrane inflation / Cicoli, Michele (Bologna U. ; INFN, Bologna) ; Hughes, Christopher (Cambridge U., DAMTP) ; Kamal, Ahmed Rakin (Masaryk U., Brno ; Brac U.) ; Francesco Marino (Bologna U.) ; Quevedo, Fernando (Cambridge U., DAMTP ; CERN ; New York U., Abu Dhabi) ; Ramos-Hamud, Mario (Cambridge U., DAMTP) ; Villa, Gonzalo (Cambridge U., DAMTP)
We study a new framework for brane-antibrane inflation where moduli stabilisation relies purely on perturbative corrections to the effective action. [...]
CERN-TH-2024-128 ; arXiv:2410.00097. - 37.
Fulltext
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6.
(26)
Approach to equilibrium in weakly coupled nonabelian plasmas / Kurkela, Aleksi (CERN) ; Lu, Egang (McGill U.)
We follow the time evolution of nonabelian gauge bosons from far-from-equilibrium initial conditions to thermal equilibrium by numerically solving an effective kinetic equation that becomes accurate in the weak coupling limit. We consider initial conditions that are either highly overoccupied or underoccupied. [...]
arXiv:1405.6318; CERN-PH-TH-2014-093; CERN-PH-TH-2014-093.- 2014-10-28 - 5 p. - Published in : Phys. Rev. Lett. 113 (2014) 182301 APS published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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7.
(26)
Discovering true tauonium via two-photon fusion at $e^+e^-$ and hadron colliders / d'Enterria, David (CERN) ; Shao, Hua-Sheng (Paris, LPTHE)
The feasibility of observing true tauonium, the bound state of two tau leptons, $\mathcal{T}_0\equiv(\tau^+\tau^-)_0$, via photon-photon collisions at $e^+e^-$ colliders and at the LHC, is studied. The production cross sections of the process $\gamma\gamma\to\mathcal{T}_0\to\gamma\gamma$-- as well as those of all relevant backgrounds: spin-0 and 2 charmonium resonances decaying to diphotons, and light-by-light scattering -- are computed in the equivalent photon approximation for $e^+e^-$ collisions at BES III ($\sqrt{s} = 3.8$ GeV), Belle II ($\sqrt{s} = 10.6$ GeV), and FCC-ee ($\sqrt{s} = 91.2$ GeV), as well as for ultraperipheral p-p, p-Pb, and Pb-Pb collisions at the LHC. [...]
arXiv:2202.02316.- 2022-05-01 - 9 p. - Published in : Phys. Rev. D 105 (2022) 093008 Fulltext: PDF;
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8.
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Parton distributions in the SMEFT from high-energy Drell-Yan tails / Greljo, Admir (U. Bern, AEC ; CERN) ; Iranipour, Shayan (Cambridge U., DAMTP) ; Kassabov, Zahari (Cambridge U., DAMTP) ; Madigan, Maeve (Cambridge U., DAMTP) ; Moore, James (Cambridge U., DAMTP) ; Rojo, Juan (Vrije U., Amsterdam ; NIKHEF, Amsterdam) ; Ubiali, Maria (Cambridge U., DAMTP) ; Voisey, Cameron (Cambridge U.)
The high-energy tails of charged- and neutral-current Drell-Yan processes provide important constraints on the light quark and anti-quark parton distribution functions (PDFs) in the large-x region. At the same time, short-distance new physics effects such as those encoded by the Standard Model Effective Field Theory (SMEFT) would induce smooth distortions to the same high-energy Drell-Yan tails. [...]
arXiv:2104.02723; Cavendish-HEP-21/06; Nikhef-2020-040.- 2021-07-19 - 64 p. - Published in : JHEP 2107 (2021) 122 Fulltext: document - PDF; 2104.02723 - PDF;
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9.
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Froissart Bound on Total Cross-section without Unknown Constants / Martin, André (CERN) ; Roy, S.M. (Tata Inst.)
We determine the scale of the logarithm in the Froissart bound on total cross-sections using absolute bounds on the D-wave below threshold for $\pi\pi$ scattering. E.g. [...]
arXiv:1306.5210; CERN-PH-TH-2013-113; CERN-PH-TH-2013-113.- 2014-02-25 - 7 p. - Published in : Phys. Rev. D 89 (2014) 045015 APS published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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10.
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Astrophysical Equation-of-State Constraints on the Color-Superconducting Gap / Kurkela, Aleksi (Stavanger U.) ; Rajagopal, Krishna (MIT, Cambridge, CTP ; CERN) ; Steinhorst, Rachel (MIT, Cambridge, CTP)
We demonstrate that astrophysical constraints on the dense-matter equation of state place an upper bound on the color-superconducting gap in dense matter above the transition from nuclear matter to quark matter. Pairing effects in the color-flavor locked (CFL) quark matter phase increase the pressure at high density, and if this effect is sufficiently large then the requirements of causality and mechanical stability make it impossible to reach such a pressure in a way that is consistent with what is known at lower densities. [...]
arXiv:2401.16253; MIT-CTP/5671.- 2024-06-24 - 8 p. - Published in : Phys. Rev. Lett. 132 (2024) 262701 Fulltext: PDF;
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