Precision photon spectra for wino annihilation
نویسندگان
چکیده
منابع مشابه
Heavy Wino-like Neutralino Dark Matter Annihilation into Antiparticles
The lightest neutralino is a viable dark matter (DM) candidate. In this paper we study indirect detection of the wino-like neutralino DM using positrons and antiprotons from the annihilation in the galactic halo. When the mass is around 2 TeV, which is favored from the thermal relic abundance, the nonperturbation effect significantly enhances the annihilation cross sections into positrons and a...
متن کاملRegge and Parton Models for Photon - Photon Annihilation ”
We discuss some of the questions which can be investigated in the two-photon part of e-+ e-e-+ e-+ hadrons when the electrons are scattered at finite momentum transfer. Discrimination of Regge and parton models for this process is possible in principle by studying the transverse helicity amplitudes. In some parton models the amplitudes are predicted exactly for limits where s = (ql + ~2)~ and 1...
متن کاملEffective photon spectra for the Photon Colliders
The luminosity distribution in the effective γγ mass at photon collider has usually two peaks which are well separated: High energy peak with mean energy spread about 5− 7% and wide low energy peak. The low energy peak depends strongly on details of design and it is unsuitable for the study of New Physics phenomena. We find simple approximate form of spectra of collided photons for γγ and eγ co...
متن کاملModels for Nonthermal Photon Spectra
We describe models of nonthermal photon emission from a homogeneous distribution of relativistic electrons and protons. Contributions from the synchrotron, inverse Compton, nonthermal bremsstrahlung and neutral-pion decay processes are computed separately using a common parameterization of the underlying distribution of nonthermal particles. The models are intended for use in fitting spectra fr...
متن کاملThe pair production spectrum from photon-photon annihilation
We present the first completely analytical computationof the full differentialγ-γ pair production rate fromcompact radiation fields, exact to 2nd order QED, and use this result to investigate the validity of previously known approximations.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2019
ISSN: 1029-8479
DOI: 10.1007/jhep01(2019)036