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arXiv 0903.4532hep-ph
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进程$gg \to HH', ~VH$中一类新的SUSY签名

A new class of SUSY signatures in the processes $gg \to HH', ~VH$

G. J. Gounaris, J. Layssac, F. M. Renard

摘要:

在MSSM和SM框架下,我们分析了描述17个过程$gg\to HH'$和9个过程$gg\to VH$的螺旋度振幅的1圈电弱(EW)预言,其中$H,H'$表示Higgs或Goldstone玻色子,而$V= Z, ~W^\pm$表示Higgs或Goldstone玻色子.集中在MSSM,我们然后调查如何的渐近螺旋守恒(HCNS)属性的超对称性,影响振幅在大型强子对撞机的能量范围内,以及什么是相应的情况下,SM,没有HCNS定理存在。HCns随后被用于构建上述MSSM过程的横截面之间的许多关系,仅取决于角度$α$和$β$。这些关系应该是渐近精确的,但随着能量向LHC范围降低,出现了依赖于质量的偏差。如果超对称性标度不是太高,即使在大型强子对撞机的能量范围内,它们也可能保持大致正确。

英文摘要:

Within the MSSM and SM frameworks, we analyze the 1loop electroweak (EW) predictions for the helicity amplitudes describing the 17 processes $gg\to HH'$, and the 9 processes $gg\to VH$; where $H,H'$ denote Higgs or Goldstone bosons, while $V= Z, ~W^\pm$. Concentrating on MSSM, we then investigate how the asymptotic helicity conservation (HCns) property of SUSY, affects the amplitudes at the LHC energy range; and what is the corresponding situation in SM, where no HCns theorem exists. HCns is subsequently used to construct many relations among the cross sections of the above MSSM processes, depending only on the angles $α$ and $β$. These relations should be asymptotically exact, but with mass-depending deviations appearing, as the energy decreases towards the LHC range. Provided the SUSY scale is not too high, they may remain roughly correct, even at the LHC energy range.

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