Results 41 to 50 of about 21,978 (196)

Simplified dark matter models in the light of AMS-02 antiproton data

Journal of High Energy Physics, 2017
In this work we perform an analysis of the recent AMS-02 antiproton flux and the antiproton-to-proton ratio in the framework of simplified dark matter models.
Tong Li
doaj   +1 more source

Light Dark Matter from Entropy Dilution

Journal of High Energy Physics, 2020
We show that a thermal relic which decouples from the standard model (SM) plasma while relativistic can be a viable dark matter (DM) candidate, if the decoupling is followed by a period of entropy dilution that heats up the SM, but not the dark sector ...
Jared A. Evans, Akshay Ghalsasi, Stefania Gori, Michele Tammaro, Jure Zupan   +4 more
doaj   +1 more source

New Light Species and the CMB

, 2013
We consider the effects of new light species on the Cosmic Microwave Background. In the massless limit, these effects can be parameterized in terms of a single number, the relativistic degrees of freedom.
Brust, Christopher, Kaplan, David E., Walters, Matthew T.   +2 more
core   +1 more source

Minimal models for dark matter and the muon g − 2 anomaly

Journal of High Energy Physics, 2018
We construct models with minimal field content that can simultaneously explain the muon g − 2 anomaly and give the correct dark matter relic abundance. These models fall into two general classes, whether or not the new fields couple to the Higgs. For the
Lorenzo Calibbi, Robert Ziegler, Jure Zupan   +2 more
doaj   +1 more source

Unitarity limits on thermal dark matter in (non-)standard cosmologies

Journal of High Energy Physics, 2021
Using the upper bound on the inelastic reaction cross-section implied by S-matrix unitarity, we derive the thermally averaged maximum dark matter (DM) annihilation rate for general k → 2 number-changing reactions, with k ≥ 2, taking place either entirely
Disha Bhatia, Satyanarayan Mukhopadhyay
doaj   +1 more source

Dark Matter from Minimal Flavor Violation

, 2011
We consider theories of flavored dark matter, in which the dark matter particle is part of a multiplet transforming nontrivially under the flavor group of the Standard Model in a manner consistent with the principle of Minimal Flavor Violation (MFV). MFV
A Adulpravitchai, A Belyaev, A Falkowski, A Katz, A Lenz, AI Vainshtein, AJ Buras, AJ Buras, AL Kagan, AV Manohar, B Batell, B Batell, B Bellazzini, B Grinstein, Brian Batell, C-R Chen, CP Burgess, CW Bauer, D Meloni, DE Soper, DL Rainwater, E Gross, E Komatsu, E Ma, E Nikolidakis, F Chen, F D’Eramo, G Bertone, G D’Ambrosio, G Jungman, GD Kribs, GD Kribs, J Alwall, J Gallicchio, J Goodman, J Goodman, J March-Russell, J McDonald, J-H Kim, JM Arnold, JM Arnold, JM Butterworth, JM Campbell, JM Campbell, Josef Pradler, JR Ellis, K Agashe, LJ Hall, M Bahr, M Beltrán, M Blennow, M Cacciari, M Cacciari, M Carena, M Cirelli, M Hirsch, M Lisanti, M Trott, MA Shifman, Michael Spannowsky, MS Boucenna, N Haba, N Kauer, P Sorensen, RS Chivukula, S Chang, S Chang, S Yellin, T Aaltonen, T Aaltonen, T Hambye, T Plehn, T Sjöstrand, TR Slatyer, V Cirigliano, V Silveira, VM Abazov, VM Abazov, Y Bai, Y Grossman, Y Kajiyama, Z Ligeti, Z Ligeti   +82 more
core   +1 more source

Dark decay of the neutron

Journal of High Energy Physics, 2018
New decay channels for the neutron into dark matter plus other particles have been suggested for explaining a long-standing discrepancy between the neutron lifetime measured from trapped neutrons versus those decaying in flight.
James M. Cline, Jonathan M. Cornell
doaj   +1 more source

The unexpected resurgence of Weyl geometry in late 20-th century physics

, 2017
Weyl's original scale geometry of 1918 ("purely infinitesimal geometry") was withdrawn by its author from physical theorizing in the early 1920s. It had a comeback in the last third of the 20th century in different contexts: scalar tensor theories of ...
A Codello, A Trautman, A Trautman, A Zee, A Zee, A Zee, A. Einstein, A. Trautman, Alexander Bregman, ALI SHOJAI, Ali Shojai, ALI SHOJAI, Allan Franklin, Arianna Borrelli, B. Rievers, Bertram Kostant, C N Yang, C Romero, C. Brans, C. N. Yang, C. ROMERO, Carl Brans, Carl H. Brans, Carlos Castro, Carlos Castro, Carlos Castro, Chen‐Ning Yang, Claus Lämmerzahl, Curtis G Callan, D. J. Simms, David Bohm, David Bohm, David Kaiser, Dennis Lehmkuhl, Detlev Dürr, E. Santamato, E. Santamato, E. Santamato, E. Scholz, Enrico Santamato, Enrico Santamato, Erhard Scholz, Erhard Scholz, F. Dahia, F. Englert, F.W. Hehl, Fang-Fang Yuan, FATIMAH SHOJAI, FATIMAH SHOJAI, FATIMAH SHOJAI, FATIMAH SHOJAI, Francesco De Martini, Francesco De Martini, Francesco De Martini, Friedrich W Hehl, Friedrich W. Hehl, Friedrich W. Hehl, Friedrich W. Hehl, Gerald B. Folland, H P de Oliveira, H Weyl, H.T. Nieh, Helge Kragh, Helge S. Kragh, Herbert Pfister, Hermann Weyl, Hermann Weyl, Hitoshi Nishino, Hrvoje Nikolić, Hubert Goenner, Hung Cheng, J Audretsch, J M Salim, J. A. Schouten, J. Bekenstein, J. M. Charap, Jayant V. Narlikar, Jean-Marie Souriau, John Miritzis, JOHN MIRITZIS, John R. Ray, Jürgen Audretsch, Jürgen Audretsch, Jȩdrzej Śniatycki, K. Hayashi, Koray Karaca, Krzysztof A. Meissner, Lee Smolin, M-A Tonnelat, M. Flato, M. Kasuya, M. L. Pucheu, M. Novello, M. Novello, M. NOVELLO, M. Omote, M. Omote, Marek Pawlowski, Marek Pawłowski, Mark Israelit, Mark Israelit, Mark Israelit, Mark Israelit, Mark Israelit, Martina R. Schneider, Mikhail Shaposhnikov, Mikhail Shaposhnikov, Milutin Blagojević, Moshé Flato, N M J Woodhouse, Nathan Rosen, P. A. M. Dirac, P. A. M. Dirac, P. Bouvier, Peter Gilkey, Philip D. Mannheim, Philip D. Mannheim, Philip D. Mannheim, Philip D. Mannheim, R Utiyama, R Utiyama, R Utiyama, R Utiyama, R. H. Dicke, R. Penrose, Robert Alan Coleman, Robert Foot, S Deser, S Weinberg, Sidney Coleman, Spiros Cotsakis, Stephen L. Adler, T. Padmanabhan, T. W. B. Kibble, Timothy Clifton, V Perlick, V Vizgin, V. Canuto, V. M. Canuto, Volker Perlick, W R Wood, W. Drechsler, W. Drechsler, W. R. Wood, Wayne C. Myrvold, Wojciech Kopczyński, Wolfgang Drechsler, Yu.N. Obukhov, YUE-LIANG WU   +148 more
core   +1 more source

Contextualising Mental Privacy in South Africa: Legal, Ethical, and Socio‐Cultural Considerations With Policy Recommendations

Developing World Bioethics, EarlyView.
ABSTRACT Mental privacy is a growing concern as neurotechnologies and digital mental health tools collect and process sensitive brain‐related data. In South Africa, cultural and religious diversity adds complexity to protecting mental privacy, with traditional healing practices, communal decision‐making, and spiritual beliefs influencing mental health ...
Marietjie Botes, Melodie Labuschaigne, Camille Casteleyn, Becky Inkster, Mark Sheppard   +4 more
wiley   +1 more source

Axion fragmentation

Journal of High Energy Physics, 2020
We investigate the production of axion quanta during the early universe evolution of an axion-like field rolling down a wiggly potential. We compute the growth of quantum fluctuations and their back-reaction on the homogeneous zero-mode.
Nayara Fonseca, Enrico Morgante, Ryosuke Sato, Géraldine Servant   +3 more
doaj   +1 more source