Indirect searches of the degenerate MSSM

被引:10
|
作者
Chowdhury, Debtosh [1 ]
Patel, Ketan M. [2 ,3 ]
Tata, Xerxes [4 ]
Vempati, Sudhir K. [5 ]
机构
[1] Ist Nazl Fis Nucl, Sez Roma, Piazzale Aldo Moro 2, I-00185 Rome, Italy
[2] Indian Inst Sci Educ & Res Mohali, Sect 81, Sas Nagar 140306, Manauli, India
[3] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
[4] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA
[5] Indian Inst Sci, Ctr High Energy Phys, Bangalore 560012, Karnataka, India
基金
欧洲研究理事会;
关键词
HIGGS-BOSON MASSES; ELECTROWEAK SYMMETRY-BREAKING; PROTON-PROTON COLLISIONS; SQUARK PAIR PRODUCTION; DARK-MATTER; 2-LOOP CORRECTIONS; STANDARD MODEL; ROOT-S=13 TEV; FINAL-STATES; COANNIHILATION;
D O I
10.1103/PhysRevD.95.075025
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A degenerate sfermionic particle spectrum can escape constraints from flavor physics, and at the same time evade the limits from the direct searches if the degeneracy extends to the gaugino-Higgsino sector. Inspired by this, we consider a scenario where all the soft terms have an approximately common mass scale at MSUSY, with splittings. <= O(10%). As a result, the third generation sfermions have large to maximal (left-right) mixing, the same being the case with charginos and some sectors of the neutralino mass matrix. We study this scenario in the light of discovery of the Higgs boson with mass similar to 125 GeV. We consider constraints from B physics, the anomalous magnetic moment of the muon and the dark matter relic density. We find that a supersymmetric spectrum as light as 600 GeV could be consistent with all current data and also account for the observed anomalous magnetic moment of the muon within 2 sigma. The neutralino relic density is generally too small to saturate the measured cold dark matter relic density. Direct detection limits from XENON100 and LUX put severe constraints on this scenario which will be conclusively probed by the XENONnT experiment.
引用
收藏
页数:14
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