arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1301.4965hep-phhep-ex
收藏

通过矢量玻色子聚变中的喷流运动学探测希格斯玻色子的自旋宇称

Probing the spin-parity of the Higgs boson via jet kinematics in vector boson fusion

A. Djouadi, R. M. Godbole, B. Mellado, K. Mohan

摘要:

确定最近在大型强子对撞机上发现的类希格斯玻色子的自旋和宇称量子数是一个非常重要的问题。在本文中,我们考虑的可能性,使用的运动学的标记喷注在希格斯粒子的生产通过矢量玻色子融合(VBF)过程中测试的张量结构的希格斯矢量玻色子($HVV$)相互作用,并确定所观察到的共振的自旋和CP属性。我们发现,一个异常的$HVV$顶点,特别是其明确的动量依赖性,极大地影响了两个散射夸克和它们的横动量之间的快度,因此,接受的运动学切割,允许选择的VBF拓扑。这些观测值的灵敏度不同的自旋宇称分配,包括依赖于大型强子对撞机的质心能量,进行了评估。此外,我们表明,在相关的希格斯生产与矢量玻色子的一些运动学变量,如系统的不变质量和两个玻色子的横动量和它们的分离快度,也是敏感的自旋宇称分配的希格斯玻色子。

英文摘要:

Determining the spin and the parity quantum numbers of the recently discovered Higgs-like boson at the LHC is a matter of great importance. In this paper, we consider the possibility of using the kinematics of the tagging jets in Higgs production via the vector boson fusion (VBF) process to test the tensor structure of the Higgs-vector boson ($HVV$) interaction and to determine the spin and CP properties of the observed resonance. We show that an anomalous $HVV$ vertex, in particular its explicit momentum dependence, drastically affects the rapidity between the two scattered quarks and their transverse momenta and, hence, the acceptance of the kinematical cuts that allow to select the VBF topology. The sensitivity of these observables to different spin-parity assignments, including the dependence on the LHC center of mass energy, are evaluated. In addition, we show that in associated Higgs production with a vector boson some kinematical variables, such as the invariant mass of the system and the transverse momenta of the two bosons and their separation in rapidity, are also sensitive to the spin--parity assignments of the Higgs--like boson.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑