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arXiv 2408.01068hep-ph
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μ⁺μ⁺对撞机上的希格斯玻色子产生

Higgs boson production at $μ^+ μ^+$ colliders

Yu Hamada, Ryuichiro Kitano, Ryutaro Matsudo, Shohei Okawa, Ryoto Takai, Hiromasa Takaura, Lukas Treuer

AI总结:

本文研究高能μ⁺μ⁺对撞机上希格斯玻色子产生,发现γ和Z介导的高阶W玻色子融合截面按(log s)³增长,在10 TeV极化束流下产生率可达μ⁺μ⁻对撞机的一半,并揭示了末态含额外W玻色子的希格斯产生的重要性。

摘要:

我们研究了高能μ⁺μ⁺对撞机上的希格斯玻色子产生。由于两个初态粒子都带正电荷,领头阶不存在W玻色子融合过程,因为该过程需要W⁺W⁻对。然而,我们发现由γ和Z介导的高阶W玻色子融合过程的截面在高质心能量√s下很大,其增长行为为(log s)³。这与领头阶W玻色子融合的log s行为形成对比。因此,尽管这是一个高阶过程,在假设相同积分亮度的条件下,10 TeV能量下带极化束流的μ⁺μ⁺对撞机上希格斯玻色子产生率可以高达μ⁺μ⁻对撞机上产生率的一半左右。为了准确计算该过程的截面,我们仔细处理了中间态光子的共线发射。由此获得的大截面进一步表明,在μ⁺μ⁻和e⁺e⁻对撞机上,末态含额外W玻色子的希格斯产生过程也具有重要意义。

英文摘要:

We study Higgs boson production at $μ^+ μ^+$ colliders at high energy. Since both initial-state particles are positively charged, there is no $W$ boson fusion at the leading order, as it requires a $W^+ W^-$ pair. However, we find that the cross section of the higher-order, $γ$- and $Z$-mediated $W$ boson fusion process is large at high center-of-mass energies $\sqrt s$, growing as $(\log s)^3$. This is in contrast to the $\log s$ behavior of the leading-order $W$ boson fusion. Thus, even though it is a higher-order process, the rate of Higgs boson production for 10 TeV energies at $μ^+ μ^+$ colliders with polarized beams can be as high as about half of the one at $μ^+ μ^-$ colliders, assuming the same integrated luminosity. To calculate the cross section of this process accurately, we carefully treat the collinear emission of the photon in the intermediate state. The thereby obtained large cross section furthermore shows the significance of Higgs production with an extra $W$ boson in the final state also at $μ^+ μ^-$ and $e^+ e^-$ colliders.

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。

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