Low scale leptogenesis under neutrino <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>μ</mml:mi><mml:mtext>−</mml:mtext><mml:mi>τ</mml:mi></mml:mrow></mml:math> reflection symmetry

In the literature, the neutrino <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>μ</a:mi><a:mo>−</a:mo><a:mi>τ</a:mi></a:math> reflection symmetry (which has the interesting predictions <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msub><c:mi>θ</c:mi><c:mn>23</c:mn></c:msub><c:mo>=</c:mo><c:mi>π</c:mi><c:mo>/</c:mo><c:mn>4</c:mn></c:math> and <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mi>δ</e:mi><e:mo>=</e:mo><e:mo>±</e:mo><e:mi>π</e:mi><e:mo>/</e:mo><e:mn>2</e:mn></e:math> for the atmospherical neutrino mixing angle and Dirac <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"><g:mi>C</g:mi><g:mi>P</g:mi></g:math> phase) is an attractive and widely studied candidate for the flavor symmetries in the neutrino sector. However, it is known that, when the seesaw model is furnished with this symmetry, the leptogenesis mechanism (which provides an elegant explanation for the baryon-antibaryon asymmetry of the Universe) can only work in the two-flavor regime (which only holds for the right-handed neutrino masses in the range <i:math xmlns:i="http://www.w3.org/1998/Math/MathML" display="inline"><i:msup><i:mn>10</i:mn><i:mn>9</i:mn></i:msup><i:mi>–</i:mi><i:msup><i:mn>10</i:mn><i:mn>12</i:mn></i:msup><i:mtext> </i:mtext><i:mtext> </i:mtext><i:mi>GeV</i:mi></i:math>). This prohibits us to have a low scale seesaw model (which has the potential to be directly accessed by running or upcoming collider experiments) that can have the <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"><k:mi>μ</k:mi><k:mo>−</k:mo><k:mi>τ</k:mi></k:math> reflection symmetry and successful leptogenesis simultaneously. In this paper, for the first time, we demonstrate that the successful leptogenesis may also be achieved in low scale seesaw models furnished with the <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"><m:mi>μ</m:mi><m:mo>−</m:mo><m:mi>τ</m:mi></m:math> reflection symmetry, by means of the flavor nonuniversality of the conversion efficiencies from the flavored lepton asymmetries to the baryon asymmetry via the sphaleron process. We perform the study in both the resonant leptogenesis regime and the leptogenesis via oscillations (Akhmedov-Rubakov-Smirnov leptogenesis) regime.