简介:Inthisstudy,wediscoveramassspacedefinedbygeneralizedKoiderelations,namedhereask-relations,andachievesomenewsymmetricrelations.Theserelationscanbefurtherusedtopredictthefourth-generationquarkmassesintermsofdilationmagnitudeandangularrotationratiosinthegeneralmassspace.Thusfar,notheoryhasbeenproposedthatcanconstrainthenumberofgenerationsofquarks;thistheorynaturallylimitsthenumberofgenerationsofquarks.
简介:Consideringthedensitydependenceofquarkmass,weinvestigatethephasetransitionbetweenthe(un-paired)strangequarkmatterandthecolor-flavor-lockedmatter,whicharesupposedtobetwocandidatesforthegroundstateofstronglyinteractingmatter.Wefindthatifthecurrentmassofstrangequarkm_sissmall,thestrangequarkmatterremainsstableunlessthebaryondensityisveryhigh.Ifm_sislarge,thephasetransitionfromthestrangequarkmattertothecolor-flavor-lockedmatterinparticulartoitsgaplessphaseisfoundtobedifferentfromtheresultspredictedbypreviousworks.Acomplicatedphasediagramofthree-flavorquarkmatterispresented,inwhichthecolor-flavor-lockedphaseregionissuppressedformoderatedensities.
简介:对在量chromodynamics(QCD)的nonperturbative政体的夸克动力学的描述的一条计量器不变的途径的主要方面首先被考察。在构造计量器不变的草地功能的平行运输操作的角色然后被介绍,并且为相互作用的表示的威尔森环的关联被强调。基于为平行运输操作的多角形的线的使用,最近的开发被介绍。一个integro微分的方程,为沿着一个单身者,与一个阶段因素定义的夸克草地功能获得了直线片断,确切被解决并且在在large-Nc限制的二维的QCD的情况中的经分解。解决方案为夸克显示动态集体产生现象,与比简单的杆强壮的分支切割奇特的一个无限的数字。
简介:BasedonarelativisticquarkmodelapproachwithaneffectivepotentialU(r)=(ac/2)(1+γ0)r2,thespincontentofthenucleonisinvestigated.Pseudo-scalarinteractionbetweenquarksandGoldstonebosonsisemployedtocalculatethecouplingsbetweentheGoldstonebosonsandthenucleon.Differentapproachestodealwiththecenterofmasscorrectionintherelativisticquarkpotentialmodelapproacharediscussed.
简介:GiventhenullresultsofsearchesfornewphysicsattheLHC,weinvestigatetheone-loopeffectsSUSYQCDintheprocesse+e-→tgattheILCinMinimalSupersymmetricStandardModel(MSSM).WefindthattherelativeSUSY-QCDcorrectionstothecrosssectionofe+e-→tgcanmaximallyreach6.5%(3.2%)attheILCwith(1/2)s=1000GeVwhenm1=313.4GeVandmg=500(1500)GeV.
简介:Basedonarelativisticquarkmodelapproach,thetransitionpropertiesofthefirstnucleonresonance△(1232),andthecouplingconstantsgπNN,g△πNareinvestigated.Tvodifferentvaystoremovethecenterofmassmotionareconsidered.Theresultsoftherelativisticapproacheswithandwithoutcenterofmasscorrectionarecomparedwiththoseofnonrelativisticconstituentquarkmodel.Moreover,pionmesoncloudeffectonthesecalculatedobservablesisexplicitlyaddressed.Betterresultsareobtainedbytakingthepionmesoncloudintoaccount.
简介:Thelittle-Higgsmodelstypicallycontainanewvector-liketopquarkT,whichplaysakeyroleinbreakingtheelectroweaksymmetry.InthecontextofthelittlestHiggs(LH)model,westudysingleproductionofthiskindofnewparticlesviatheprocessep→eb→veTinthefuturelinac-ring-typeepcollider(LCО×LHC).Wefindthattheproductioncrosssectionisintherangeof1.2×10^-40.48pbattheLCО×LHCwith√s=3.7TeV.
简介:Wetrytoapplyaconstituentquarkmodel(avarietychiralconstituentquarkmodel)andtheresonatinggroupapproachforthemulti-quarkproblemstocomputetheeffectivepotentialbetweentheNN-inS-wave(thequarksinthenucleonsNandN-,andthetwonucleonsrelativelyaswell,areinSwave)soastoseethepossibilityiftheremaybeatightboundstateofsixquarksasindicatedbyastrongenhancementatthresholdofpp-inJ/ψandBdecays.TheeffectivepotentialwhichweobtainintermsofthemodelandapproachshowsiftheexperimentalenhancementisreallycausedbyatightS-waveboundstateofsixquarks,thenthequantumnumberoftheboundstateisverylikelytobeI=1,JPC=0-+.
简介:在LHT模型的过程tch,e+eb,e+ebh和ppb上的风味变化效果在这份报纸被调查。我们从T同等值奇怪的镜子费米子和计量器波色子计算一个环水平贡献。结果证明最高的夸克在LHT模型的稀罕腐烂tch能显著地在SM相对那被提高。在在LHT模型的线性colliders的b生产能非常提高SM生气的节并且在在实验允许的一些参数空格到达0.1fb。但是重计量器波色子和镜子费米子环有小贡献到过程ppb和e+ebh。e+eb上的LHT效果可能因此在未来被检测线性colliders,当为e+e被看太小时,bh和ppb在未来处理线性colliders和LHC。
简介: