Higgs friends and counterfeits at hadron colliders
Higgs friends and counterfeits at hadron colliders
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强子对撞机中的希格斯朋友和赝品
DOI：
10.1007/jhep06(2011)127
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发表时间：
2011
影响因子：
5.4
通讯作者：
N. Weiner
中科院分区：
文献类型：
--
作者：
P. Fox;David Tucker;N. Weiner
我们考虑的可能性“希格斯伪”-标量，可以产生的横截面与SM希格斯，并与相同的相对可观察到的分支比衰减，但这仍然是不负责的电弱对称性破缺。我们还考虑了一个相关的场景，涉及“希格斯朋友”，类似地通过gg聚变过程产生的场，这将通过双玻色子通道WW，ZZ，γγ，甚至γZ被发现，可能具有比希格斯更大的横截面乘以分支比。发现希格斯友子或希格斯伪子，而不是直接指向弱标度的起源，将表明存在新的有色场，这是相当大的产生截面所必需的（在希格斯友子的双玻色子衰变的情况下，也可能是新的无色但弱带电的态）。这些粒子很容易被混淆为普通的希格斯粒子，也许需要额外的一代来解释不同的截面，我们强调矢量玻色子融合作为区分希格斯伪粒子和真希格斯粒子的通道的重要性。在具有“有效Z”的情况下，自然会期望这样的场，在这种情况下，在SM下带电的重态在新的规范力下为SM场产生有效电荷。我们讨论了在大型强子对撞机上发现希格斯伪粒子、希格斯朋友和相关带电场的前景。
We consider the possibility of “Higgs counterfeits” - scalars that can be produced with cross sections comparable to the SM Higgs, and which decay with identical relative observable branching ratios, but which are nonetheless not responsible for electroweak symmetry breaking. We also consider a related scenario involving “Higgs friends,” fields similarly produced through gg fusion processes, which would be discovered through diboson channels WW, ZZ, γγ, or even γZ, potentially with larger cross sections times branching ratios than for the Higgs. The discovery of either a Higgs friend or a Higgs counterfeit, rather than directly pointing towards the origin of the weak scale, would indicate the presence of new colored fields necessary for the sizable production cross section (and possibly new colorless but electroweakly charged states as well, in the case of the diboson decays of a Higgs friend). These particles could easily be confused for an ordinary Higgs, perhaps with an additional generation to explain the different cross section, and we emphasize the importance of vector boson fusion as a channel to distinguish a Higgs counterfeit from a true Higgs. Such fields would naturally be expected in scenarios with “effective Z′s,” where heavy states charged under the SM produce effective charges for SM fields under a new gauge force. We discuss the prospects for discovery of Higgs counterfeits, Higgs friends, and associated charged fields at the LHC.
影响因子：
4.4
作者：
The Atlas Collaboration
通讯作者：
The Atlas Collaboration