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000452534 1001_ $$0P:(DE-H253)PIP1013967$$aDomcke, Valerie Fiona$$b0
000452534 245__ $$aWash-In Leptogenesis
000452534 260__ $$c2020
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000452534 520__ $$aWe present a new leptogenesis mechanism based on the standard type-I seesaw model that successfully operates at right-handed-neutrino masses as low as a few 100 TeV. This mechanism, which we dub 'wash-in leptogenesis', does not require any CP violation in the neutrino sector and can be implemented even in the regime of strong washout. The key idea behind wash-in leptogenesis is to generalize standard freeze-out leptogenesis to a nonminimal cosmological background in which the chemical potentials of all particles not in chemical equilibrium at the temperature of leptogenesis are allowed to take arbitrary values. This sets the stage for building a plethora of new baryogenesis models where chemical potentials generated at high temperatures are reprocessed to generate a nonvanishing B-L asymmetry at low temperatures. As concrete examples, we discuss wash-in leptogenesis after axion inflation and in the context of grand unification.
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000452534 650_7 $$2INSPIRE$$atemperature: high
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000452534 650_7 $$2INSPIRE$$aleptogenesis
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000452534 7001_ $$0P:(DE-H253)PIP1015355$$aKamada, Kohei$$b1$$udesy
000452534 7001_ $$0P:(DE-H253)PIP1081963$$aMukaida, Kyohei$$b2
000452534 7001_ $$0P:(DE-H253)PIP1010752$$aSchmitz, Kai$$b3$$eCorresponding author$$udesy
000452534 7001_ $$0Masaki.Yamada.1$$aYamada, Masaki$$b4
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