超对称单态希格斯和右手中微子解释暗物质自相互作用研究

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1、中文图书分类号：O413.3密级：公开UDC：53学校代码：10005硕士学位论文MASTERALDISSERTATION论文题目：超对称单态希格斯和右手中微子解释暗物质自相互作用研究论文作者：康海晶学科：物理学指导教师：熊兆华论文提交日期:2017年6月17日UDC:53Æè:10005¥©ãÖ©aÒ:O413.3ÆÒ:S201406069?:úm®óÆnÆa¬ÆØ©8µé¡üFdÚm¥f)ºVÔgp^ïÄ=©8µExtendingtheMSSMwithsinglethiggsandright

2、handedneutrinofortheself-interactingDarkMatterØ©öµx°¬Æ;µÔnÆïĵâfÔnƵnÆa¬µ=îuBǤ3üµA^ênÆFFϵ20176ÇÆüµ®óÆÁÁ2012§ÔnÆ[3uî³Øf¥%rféEÅ£LHC¤þuy
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4、¡.;üFdâf;m¥f;VÔgp^-I-MasterDegreeThesisofBejingUniversityofTechnology-II-AbstractAbstractIn2012,thelastparticlesofthestandardmodel-Higgswasfoundatthelargehadroncollider(LHC)ofCERN.Thestandardmodel,describingelementarypar-ticlesandinteractiontheoryisprov

5、edtobesuccessful.However,therestillaresomeproblems,forexample,manyinputparameters,theissuesarerelatedtothedarkmatterandthemassesofneutrinos,etc..Inthenewphysicalmodel,theSUSYalwaysberesearched.Toslovethesmallcosmologicalstructuresimulation-s,peopleisintro

6、ducedtheleft-handedsingletintheMinimalSuppersymmetryStandModel(MSSM).HoweverMSSMisnotapplicablefortheannihilationofdarkmatterandtheSpincrosssectionofdarkmatter,becausetheconstraintfortheSpincrosssectionisverystrong.Furtherresearch,inordertosolvetheproblem

7、oftheconstraintoftheBBNonthesinglestateHiggs,researchthedarkmatterselfinteractioninNMSSM,thatisintroducetheright-handedinNMSSM.Checkiftheself-interactingDMscenarioandBBNconstraintscanberealized.WewilltakeintoaccountofconstraintsfromDMrelicabundance.wefoun

8、d:(1)WiththeSNNcouplingλ>0(thesingletformsadarksector),ThereisenoughparameterspacesurvivesandtheSommerfeldenhancementfactorcanberealized;(2)Thesingletsectorcangivegoodexplanationofrelicabundanceofdarkmatterandsmallc