TY - JOUR
T1 - Asymmetric higgsino dark matter
AU - Blum, Kfir
AU - Efrati, Aielet
AU - Grossman, Yuval
AU - Nir, Yosef
AU - Riotto, Antonio
N1 - DOE [DE-FG02-90ER40542]; NSF [PHY-0757868]; BSF; Israel Science Foundation [377/07]; German-Israeli foundation for scientific research and development (GIF)We thank Nima Arkani-Hamed, Rouven Essig, Yonit Hochberg, Jesse Thaler, and Tomer Volansky for useful discussions. K. B. is supported by DOE grant DE-FG02-90ER40542. Y.G. is supported by NSF grant PHY-0757868 and by a grant from the BSF. Y.N. is the Amos de-Shalit chair of theoretical physics and supported by the Israel Science Foundation (grant #. 377/07), and by the German-Israeli foundation for scientific research and development (GIF).
PY - 2012/7/31
Y1 - 2012/7/31
N2 - In the supersymmetric framework, prior to the electroweak phase transition, the existence of a baryon asymmetry implies the existence of a Higgsino asymmetry. We investigate whether the Higgsino could be a viable asymmetric dark matter candidate. We find that this is indeed possible. Thus, supersymmetry can provide the observed dark matter abundance and, furthermore, relate it with the baryon asymmetry, in which case the puzzle of why the baryonic and dark matter mass densities are similar would be explained. To accomplish this task, two conditions are required. First, the gauginos, squarks, and sleptons must all be very heavy, such that the only electroweak-scale superpartners are the Higgsinos. With this spectrum, supersymmetry does not solve the fine-tuning problem. Second, the temperature of the electroweak phase transition must be low, in the (1-10)GeV range. This condition requires an extension of the minimal supersymmetric standard model.
AB - In the supersymmetric framework, prior to the electroweak phase transition, the existence of a baryon asymmetry implies the existence of a Higgsino asymmetry. We investigate whether the Higgsino could be a viable asymmetric dark matter candidate. We find that this is indeed possible. Thus, supersymmetry can provide the observed dark matter abundance and, furthermore, relate it with the baryon asymmetry, in which case the puzzle of why the baryonic and dark matter mass densities are similar would be explained. To accomplish this task, two conditions are required. First, the gauginos, squarks, and sleptons must all be very heavy, such that the only electroweak-scale superpartners are the Higgsinos. With this spectrum, supersymmetry does not solve the fine-tuning problem. Second, the temperature of the electroweak phase transition must be low, in the (1-10)GeV range. This condition requires an extension of the minimal supersymmetric standard model.
UR - http://www.scopus.com/inward/record.url?scp=84864460782&partnerID=8YFLogxK
U2 - https://doi.org/10.1103/PhysRevLett.109.051302
DO - https://doi.org/10.1103/PhysRevLett.109.051302
M3 - مقالة
SN - 0031-9007
VL - 109
JO - Physical review letters
JF - Physical review letters
IS - 5
M1 - 051302
ER -