20210529 08:49 
Detailed record  Similar records

20210518 08:38 
On factorisation schemes for the electron parton distribution functions in QED
/ Frixione, Stefano (INFN, Genoa ; CERN)
The electron, positron, and photon Parton Distribution Functions (PDFs) of the unpolarised electron have recently been computed at the nexttoleading logarithmic accuracy in QED, by adopting the $\overline{\rm MS}$ factorisation scheme. We present here analogous results, obtained by working in a different framework that is inspired by the socalled DIS scheme. [...]
arXiv:2105.06688; CERNTH2021078.
20210723  32 p.
 Published in : JHEP 2107 (2021) 180
Fulltext: PDF;

Detailed record  Similar records

20210512 04:00 
Detailed record  Similar records

20210501 04:40 
Detailed record  Similar records

20210427 04:52 
Dark matter and the early Universe: a review
/ Arbey, A. (IP2I, Lyon ; CERN ; IUF, Paris) ; Mahmoudi, F. (IP2I, Lyon ; CERN ; IUF, Paris)
Dark matter represents currently an outstanding problem in both cosmology and particle physics. In this review we discuss the possible explanations for dark matter and the experimental observables which can eventually lead to the discovery of dark matter and its nature, and demonstrate the close interplay between the cosmological properties of the early Universe and the observables used to constrain dark matter models in the context of new physics beyond the Standard Model..
arXiv:2104.11488; CERNTH2021066.
202107  41 p.
 Published in : Prog. Part. Nucl. Phys. 119 (2021) 103865
Fulltext: PDF;

Detailed record  Similar records

20210422 11:42 
Nonabelian infrared divergences on the celestial sphere
/ Magnea, Lorenzo (CERN ; INFN, Turin ; Turin U.)
We consider the infrared factorisation of nonabelian multiparticle scattering amplitudes, and we study the form of the universal colour operator responsible for infrared divergences, when expressed in terms of coordinates on the `celestial sphere' intersecting the future lightcone at asymptotic distances. We find that colourdipole contributions to the infrared operator, to all orders in perturbation theory, have a remarkably simple expression in these coordinates, with scale and coupling dependence factorised from kinematics and colour. [...]
arXiv:2104.10254; CERNTH2021063.
20210531  23 p.
 Published in : JHEP 2105 (2021) 282
Article from SCOAP3: PDF; Fulltext: PDF;

Detailed record  Similar records

20210415 05:11 
Precision calculation of dark radiation from spinning primordial black holes and early matterdominated eras
/ Arbey, Alexandre (IP2I, Lyon ; CERN ; IUF, Paris) ; Auffinger, Jérémy (IP2I, Lyon) ; Sandick, Pearl (Utah U.) ; Shams Es Haghi, Barmak (Utah U.) ; Sinha, Kuver (Oklahoma U.)
We present precision calculations of dark radiation in the form of gravitons coming from Hawking evaporation of spinning primordial black holes (PBHs) in the early Universe. Our calculation incorporates a careful treatment of extended spin distributions of a population of PBHs, the PBH reheating temperature, and the number of relativistic degrees of freedom. [...]
arXiv:2104.04051; CERNTH2021049.
20210615  18 p.
 Published in : Phys. Rev. D 103 (2021) 123549
Fulltext from publisher: PDF;

Detailed record  Similar records

20210413 04:41 
Detailed record  Similar records

20210410 04:18 
Swampland Conjectures and Infinite Flop Chains
/ Brodie, Callum R. (IPhT, Saclay) ; Constantin, Andrei (Oxford U., Theor. Phys. ; U. Oxford (main)) ; Lukas, Andre (Oxford U., Theor. Phys.) ; Ruehle, Fabian (CERN ; Oxford U., Theor. Phys.)
We investigate swampland conjectures for quantum gravity in the context of Mtheory compactified on CalabiYau threefolds which admit infinite sequences of flops. Naively, the moduli space of such compactifications contains paths of arbitrary geodesic length traversing an arbitrarily large number of Kähler cones, along which the lowenergy spectrum remains virtually unchanged. [...]
arXiv:2104.03325; CERNTH2021051.
20210804  9 p.
 Published in : Phys. Rev. D 104 (2021) 046008
Fulltext from publisher: PDF;

Detailed record  Similar records

20210409 04:02 
Detailed record  Similar records


