Pregled bibliografske jedinice broj: 1060672
Pion-like dark matter
Pion-like dark matter // 2nd Int. Symposium on Particles, Strings and Cosmology PASCOS2014
Varšava, Poljska, 2014. (pozvano predavanje, podatak o recenziji nije dostupan, pp prezentacija, znanstveni)
CROSBI ID: 1060672 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Pion-like dark matter
Autori
Melić, Blaženka
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, pp prezentacija, znanstveni
Skup
2nd Int. Symposium on Particles, Strings and Cosmology PASCOS2014
Mjesto i datum
Varšava, Poljska, 22.06.2014. - 27.06.2014
Vrsta sudjelovanja
Pozvano predavanje
Vrsta recenzije
Podatak o recenziji nije dostupan
Ključne riječi
dark matter
Sažetak
We study a phenomenological model where the lightest dark matter (DM) particles are the pseudo-Goldstone excitations associated with a spontaneously broken symmetry, and transforming linearly with respect to an unbroken group HDM. For definiteness we take HDM = SU(N) and assume the Goldstone particles are bosons ; in parallel with QCD, we refer to these particles as dark-matter pions. This scenario is in contrast to the common assumption that DMs transform linearly under the full symmetry of the model. We illustrate the formalism by treating in detail the case of HDM = SU(2), in particular we calculate all the interactions relevant for the Boltzmann equations, which we solve numerically. We then compare the results with the constraints derived from the cold DM and direct detection experiments and derive the corresponding restrictions on the model parameters.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
