Naslov
Pionic Dark Matter

Autori
Melić, Blaženka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, pp prezentacija, znanstveni

Skup
International Workshop: Selected Challenges in Particle Phenomenology

Mjesto i datum
Brdo, Slovenija, 19.09.2013. - 20.09.2013

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

POVEZANOST RADA