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Constraints on H± Parameter Space in 2HDM at $\sqrt {s}=$ 8 TeV and $\sqrt {s}=$ 13 TeV
International Journal of Theoretical Physics ( IF 1.3 ) Pub Date : 2020-09-05 , DOI: 10.1007/s10773-020-04572-4
Ijaz Ahmed , Murad Badshah , Nadia Kausar

This paper reflects the heavy Higgs scenario where the mass of charged Higgs is equal to or greater than 200 GeV. The CMS observed and expected values of upper limits on the product $\sigma_H^\pm BR(H^\pm \rightarrow tb^\mp)$, assuming $H^\pm \rightarrow tb^\mp=1$, both at 8 TeV (at integrated luminosity of 19.7 $fb^{-1}$ ) and 13 TeV (at integrated luminosity of 35.9 $fb^{-1}$ ) c.m energies are used. By comparing these expected and observed upper limits with computational values , we find out the expected and observed exclusion regions of charged Higgs parameter space ($ m_H^\pm - tan\beta $ space ) in 2HDM both at $\sqrt{s}=$8 and $\sqrt{s}=$ 13 TeV. We compare the expected and observed exclusion regions and observe that exclusion regions made by observed upper limits are always greater than the exclusion made by expected upper limits both at 8 and 13 TeV c.m energies. Only in the mass range from 200 GeV to 220 GeV the expected exclusion region is greater than the observed one only at $\sqrt{s}=$13 TeV. We also equate the exclusion regions at these two different center of mass energies and find that the expected exclusion region and observed exclusion region at $\sqrt{s}=$13 TeV are always greater than the expected exclusion region and observed exclusion region at $\sqrt{S}=$8 TeV respectively.

中文翻译:

$\sqrt {s}=$ 8 TeV 和 $\sqrt {s}=$ 13 TeV 的 2HDM 中 H± 参数空间的约束

本文反映了带电希格斯粒子的质量等于或大于 200 GeV 的重希格斯粒子场景。CMS 观察到的和期望的乘积上限值 $\sigma_H^\pm BR(H^\pm \rightarrow tb^\mp)$,假设 $H^\pm \rightarrow tb^\mp=1$,在 8 TeV(综合光度为 19.7 $fb^{-1}$ )和 13 TeV(综合光度为 35.9 $fb^{-1}$ )cm 能量使用。通过将这些预期和观察到的上限与计算值进行比较,我们在 $\sqrt{s}= 处找出了 2HDM 中带电希格斯参数空间($ m_H^\pm - tan\beta $ space )的预期和观察到的排除区域$8 和 $\sqrt{s}=$13 TeV。我们比较了预期和观察到的排除区域,并观察到在 8 和 13 TeV cm 能量下,由观察到的上限产生的排除区域总是大于由预期上限产生的排除区域。只有在 200 GeV 到 220 GeV 的质量范围内,预期的排除区域才大于观察到的仅在 $\sqrt{s}=$13 TeV 处。我们还将这两个不同质能中心的排除区域等同起来,发现 $\sqrt{s}=$13 TeV 处的预期排除区域和观察到的排除区域总是大于 $\ 处的预期排除区域和观察到的排除区域sqrt{S}=$8 TeV 分别。
更新日期:2020-09-05
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