دانلود مقاله با موضوع جستجو در تاریکی: شکار فوتون تاریک
در قالب pdf و در 18 اسلاید،قابل ویرایش، شامل:
موضوع به انگلیسی:Searching in the dark: the hunt for the dark photon
بخشی از متن:The existence of Dark Matter (DM) is a well established fact since many decades, thanks to the
observation of the effects of its gravitational interaction with the ordinary matter in the Universe.
However, our knowledge of the Dark Matter features is still rather scarce. Indeed, one of the
biggest quests in fundamental science today is the investigation of Dark Matter nature, from its
origin to its composition, and the way its constituents interact with the ordinary matter, apart
from gravity. Huge and ambitious efforts have been spent in the last years into its identification,
concentrating especially on the search of viable Weakly Interacting Massive Particle candidates.
However, no positive results have been achieved so far along this direction. On the other hand,
many fascinating new ideas and models for its interpretation have been blooming: among them,
an intriguing hypothesis is that the Dark Matter constituents could be neutral under Standard
Model interactions, but they could interact through a new, still unknown, force under a “hidden”
charge. This new hidden symmetry would be mediated by a massive gauge boson, the dark
photon, which is expected to couple to the Standard Model via a kinetic mixing. The search for
such a massive mediator has been pursued with large enthusiasm and dedication in the latest
years, as its observation could be within the reach of many already existing experimental facilities,
both based on accelerators or in smaller scale setups. This report reviews the present status
and progress of the experimental searches in this field.
