Superradiant leptogenesis

被引：2
作者：
Ghoshal, Anish [1 ]
Perez-Gonzalez, Yuber F. [2 ]
Turner, Jessica [2 ]
机构：
[1] Univ Warsaw, Inst Theoret Phys, Fac Phys, Ul Pasteura 5, PL-02093 Warsaw, Poland
[2] Univ Durham, Inst Particle Phys Phenomenol, South Rd, Durham, England
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 2024卷 / 02期
基金：
英国科学技术设施理事会;
关键词：
Baryo-and Leptogenesis; Baryon/Lepton Number Violation; Sterile or Heavy Neutrinos; Cosmology of Theories BSM; PARTICLE-EMISSION RATES; PRIMORDIAL BLACK-HOLES; MASSLESS PARTICLES; BARYON ASYMMETRY; UNIVERSE; MATTER; WAVES;
D O I：
10.1007/JHEP02(2024)113
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We investigate how superradiance affects the generation of baryon asymmetry in a universe with rotating primordial black holes, considering a scenario where a scalar boson is coupled to the heavy right-handed neutrinos. We identify the regions of the parameter space where the scalar production is enhanced due to superradiance. This enhancement, coupled with the subsequent decay of the scalar into right handed neutrinos, results in the non-thermal creation of lepton asymmetry. We show that successful leptogenesis is achieved for masses of primordial black holes in the range of order O(0.1 g) - O(10 g) and the lightest of the heavy neutrino masses, M-N similar to O(10(12)) GeV. Consequently, regions of the parameter space, which in the case of Schwarzchild PBHs were incompatible with viable leptogenesis, can produce the observed matter-antimatter asymmetry.
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页数：22
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