Neutralino dark matter and other LHC predictions from quasi Yukawa unification

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• 作者：Qaisar Shafi^a ; ^{shafi@bartol.udel.edu" class="auth_mail" title="E-mail the corresponding author} ; 艦ü ; krü ; Hanif Tany谋ld谋z谋^b ; ^{hanif@theor.jinr.ru" class="auth_mail" title="E-mail the corresponding author} ; Cem Salih Ü ; n^c ; ^{cemsalihun@uludag.edu.tr" class="auth_mail" title="E-mail the corresponding author}
• 刊名：Nuclear Physics B
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：900
• 期：Complete
• 页码：400-411
• 全文大小：2071 K

文摘

We explore the dark matter and LHC implications of class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0550321315003387&_mathId=si1.gif&_user=111111111&_pii=S0550321315003387&_rdoc=1&_issn=05503213&md5=4a571a60ef47e5597de08c14986ff0be" title="Click to view the MathML source">t−b−蟿class="mathContainer hidden">class="mathCode">$t-b-蟿$ quasi Yukawa unification in the framework of supersymmetric models based on the gauge symmetry class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0550321315003387&_mathId=si129.gif&_user=111111111&_pii=S0550321315003387&_rdoc=1&_issn=05503213&md5=e5b305c1d9acbb28ca78c9f9c43b4a01" title="Click to view the MathML source">G=SU(4)_c×SU(2)_L×SU(2)_Rclass="mathContainer hidden">class="mathCode">$G=\mathit{SU}{(4)}_c\times \mathit{SU}{(2)}_L\times \mathit{SU}{(2)}_R$. The deviation from exact Yukawa unification is quantified by a dimensionless parameter C   (class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0550321315003387&_mathId=si3.gif&_user=111111111&_pii=S0550321315003387&_rdoc=1&_issn=05503213&md5=26c3bae57ff91407d3c9831de0c5012a" title="Click to view the MathML source">|C|鈮?.2class="mathContainer hidden">class="mathCode">$|C|鈮?/mo><mn>0.2</mn>$), such that the Yukawa couplings at class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0550321315003387&_mathId=si22.gif&_user=111111111&_pii=S0550321315003387&_rdoc=1&_issn=05503213&md5=6e0240bd386a571d8dc9dabda3ef455b" title="Click to view the MathML source">M_GUTclass="mathContainer hidden">class="mathCode">$M_{\mathrm{GUT}}$ are related by class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0550321315003387&_mathId=si5.gif&_user=111111111&_pii=S0550321315003387&_rdoc=1&_issn=05503213&md5=f83ef7de758b0fb2427b275402a5cd20" title="Click to view the MathML source">y_t:y_b:y_蟿=|1+C|:|1−C|:|1+3C|class="mathContainer hidden">class="mathCode">$y_t:y_b:y_{蟿}=|1+C|:|1-C|:|1+3C|$. In contrast to earlier studies which focused on universal gaugino masses, we consider non-universal gaugino masses at class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0550321315003387&_mathId=si22.gif&_user=111111111&_pii=S0550321315003387&_rdoc=1&_issn=05503213&md5=6e0240bd386a571d8dc9dabda3ef455b" title="Click to view the MathML source">M_GUTclass="mathContainer hidden">class="mathCode">$M_{\mathrm{GUT}}$ that are compatible with the gauge symmetry G. Our results reveal a variety of neutralino dark matter scenarios consistent with the observations. These include stau and chargino coannihilation scenarios, the A  -resonance scenario, as well as Higgsino dark matter solutions which are more readily probed by direct detection searches. The gluino mass is found to be class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0550321315003387&_mathId=si6.gif&_user=111111111&_pii=S0550321315003387&_rdoc=1&_issn=05503213&md5=2ce4f2d717a7f505ec2c73403c26ceac" title="Click to view the MathML source">鈮? TeVclass="mathContainer hidden">class="mathCode">$鈮?/mo><mn>4</mn><mtext>\; </mtext><mtext>TeV</mtext>$, the stop mass is class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0550321315003387&_mathId=si7.gif&_user=111111111&_pii=S0550321315003387&_rdoc=1&_issn=05503213&md5=599cb8931bf860a2b462a8361a93ea51" title="Click to view the MathML source">鈮? TeVclass="mathContainer hidden">class="mathCode">$鈮?/mo><mn>2</mn><mtext>\; </mtext><mtext>TeV</mtext>$, while the first two family squarks and sleptons are of order 4–5 TeV and 3 TeV respectively.