Results 31 to 40 of about 68,432 (208)

Di-Higgs production in the 4b channel and gravitational wave complementarity

Journal of High Energy Physics, 2020
We present a complementarity study of gravitational waves and double Higgs production in the 4b channel, exploring the gauge singlet scalar extension of the SM.
Alexandre Alves, Dorival Gonçalves, Tathagata Ghosh, Huai-Ke Guo, Kuver Sinha   +4 more
doaj   +1 more source

Physics beyond the standard model with kaons at NA62 [PDF]

AIP Conference Proceedings, 2020
The NA62 experiment at CERN Super Proton Synchrotron was designed to measure BR(K+ → π+νv¯) with an in-fight technique, never used before for this measurement. This decay is characterised by a very precise prediction in the Standard Model. Its branching ratio, which is expected to be less than 10−10, is one of the best candidates to indicate indirect ...
Massarotti P., Aliberti R., Ambrosino F., Ammendola R., Angelucci B., Antonelli A., Anzivino G., Arcidiacono R., Barbanera M., Biagioni A., Bician L., Biino C., Bizzeti A., Blazek T., Bloch-Devaux B., Bonaiuto V., Boretto M., Bragadireanu M., Britton D., Brizioli F., Brunetti M. B., Bryman D., Bucci F., Capussela T., Ceccucci A., Cenci P., Cerny V., Cerri C., Checcucci B., Conovalo A., Cooper P., Cortina Gil E., Corvino M., Costantini F., Cotta Ramusino A., Coward D., DAgostini G., Dainton J., Dalpiaz P., Danielsson H., De Simone N., Di Filippo D., Laycock P., Di Lella L., Doble N., Dobrich B., Duval F., Duk V., Engelfried J., Enik T., Estrada-Tristan N., Falaleev V., Fantechi R., Fascianelli V., Federici L., Fedotov S., Filippi A., Fiorini M., Fry J., Fu J., Fucci A., Fulton L., Gamberini E., Gatignon L., Georgiev G., Ghinescu S., Gianoli A., Giorgi M., Giudici S., Gonnella F., Goudzovski E., Graham C., Guida R., Gushchin E., Hahn F., Heath H., Husek T., Hutanu O., Hutchcroft D., Iacobuzio L., Iacopini E., Imbergamo E., Jenninger B., Kampf K., Kekelidze V., Kholodenko S., Khoriauli G., Khotyantsev A., Kleimenova A., Korotkova A., Koval M., Kozhuharov V., Kucerova Z., Kudenko Y., Kunze J., Kurochka V., Kurshetsov V., Lanfranchi G., Lamanna G., Latino G., Laycock P., Lazzeroni C., Lehmann Miotto G., Lenti M., Leonardi E., Lichard P., Litov L., Lollini R., Lomidze D., Lonardo A., Lubrano P., Lupi M., Lurkin N., Madigozhin D., Mannelli I., Mannocchi G., Mapelli A., Marchetto F., Marchevski R., Martellotti S., Massri K., Maurice E., Medvedeva M., Mefodev A., Menichetti E., Migliore E., Minucci E., Mirra M., Misheva M., Molokanova N., Moulson M., Movchan S., Napolitano M., Neri I., Newson F., Norton A., Noy M., Numao T., Obraztsov V., Ostankov A., Padolski S., Page R., Palladino V., Parkinson C., Pedreschi E., Pepe M., Perrin-Terrin M., Peruzzo L., Petrov P., Petrucci F., Piandani R., Piccini M., Pinzino J., Polenkevich I., Pontisso L., Potrebenikov Yu., Protopopescu D., Raggi M., Romano A., Rubin P., Ruggiero G., Ryjov V., Salamon A., Santoni C., Saracino G., Sargeni F., Semenov V., Sergi A., Shaikhiev A., Shkarovskiy S., Soldi D., Sougonyaev V., Sozzi M., Spadaro T., Spinella F., Sturgess A., Swallow J., Trilov S., Valente P., Velghe B., Venditti S., Vicini P., Volpe R., Vormstein M., Wahl H., Wanke R., Wrona B., Yushchenko O., Zamkovsky M., Zinchenko A.   +189 more
openaire   +5 more sources

A potentially detectable gamma-ray line in the Fermi Galactic center excess — in light of one-step cascade annihilations of secluded (vector) dark matter via the Higgs portal

Journal of High Energy Physics, 2020
We show the presence of a potentially detectable gamma-ray line in the Fermi Galactic center excess in light of the secluded (vector) dark matter (DM) model in which the hidden scalar, nearly degenerate with DM in mass, mediates the interaction of the ...
Kwei-Chou Yang
doaj   +1 more source

Shining light on the scotogenic model: interplay of colliders and cosmology

Journal of High Energy Physics, 2020
In the framework of the scotogenic model, which features radiative generation of neutrino masses, we explore light dark matter scenario. Throughout the paper we chiefly focus on keV-scale dark matter which can be produced either via freeze-in through the
Sven Baumholzer, Vedran Brdar, Pedro Schwaller, Alexander Segner   +3 more
doaj   +1 more source

Scalar dark matter: real vs complex

Journal of High Energy Physics, 2017
We update the parameter spaces for both a real and complex scalar dark matter via the Higgs portal. In the light of constraints arising from the LUX 2016 data, the latest Higgs invisible decay and the gamma ray spectrum, the dark matter resonant mass ...
Hongyan Wu, Sibo Zheng
doaj   +1 more source

Leptogenesis from a U(1) D resonance

Journal of High Energy Physics, 2020
We propose a novel mechanism to realize leptogenesis through the Breit- Wigner resonance of a dark U(1) D gauge boson Z D , which mediates lepton number vi- olating annihilations of dark matter (DM) in the context of the scotogenic model with a U(1) D ...
Eung Jin Chun, Arnab Dasgupta, Sin Kyu Kang   +2 more
doaj   +1 more source

HERA physics beyond the standard model [PDF]

Journal of Physics G: Nuclear and Particle Physics, 1999
The prospects of physics beyond the standard model in deep inelastic scattering are reviewed, emphasizing some scenarios which attained attention after the observation of an excess of events with large momentum transfer at HERA.
openaire   +4 more sources

Mass hierarchy and physics beyond the Standard Model

EPJ Web of Conferences, 2014
I discuss the status of the mass hierarchy problem and prospects for beyond the Standard Model physics in the light of the Higgs scalar discovery at the LHC and the experimental searches for new physics.
Antoniadis Ignatios
doaj   +1 more source

MeV-scale seesaw and leptogenesis

Journal of High Energy Physics, 2021
We study the type-I seesaw model with three right-handed neutrinos and Majorana masses below the pion mass. In this mass range, the model parameter space is not only strongly constrained by the requirement to explain the light neutrino masses, but also ...
Valerie Domcke, Marco Drewes, Marco Hufnagel, Michele Lucente   +3 more
doaj   +1 more source

Electroweak-Skyrmion as asymmetric dark matter

Journal of High Energy Physics, 2022
We propose a scenario that the Electroweak-Skyrmion, a solitonic object made of the Higgs field and the electroweak gauge fields, is identified as an asymmetric dark matter.
Yu Hamada, Ryuichiro Kitano, Masafumi Kurachi   +2 more
doaj   +1 more source