论文标题

使用$γ$ -Ray观察矮球星系来测试W玻璃体质量异常的常见起源和GEV $γ$ ray-ray/antiproton多余

Using $γ$-ray observations of dwarf spheroidal galaxies to test the possible common origin of the W-boson mass anomaly and the GeV $γ$-ray/antiproton excesses

论文作者

Zhu, Ben-Yang, Li, Shang, Cheng, Ji-Gui, Hu, Xiao-Song, Li, Rong-Lan, Liang, Yun-Feng

论文摘要

Fermilab的最新结果表明,测得的W-Boson质量偏离了标准模型(SM)的预测,其显着性为$>7σ$,并且可能存在SM以外的新物理。有人提出,惰性两个Higgs Doublet模型(I2HDM)可以很好地解释新的W-boson质量。同时,I2HDM中最轻的中性标量$ s $可以稳定,并以$ \ sim 54-74 $ gev的首选暗物质质量扮演暗物质的角色。还发现,该模型的一部分参数空间可以解释$ fermi $ -LAT检测到的Galactic Center Gev Gamma-ray多余,以及AMS-02通过$ SS \ rightArrow ww^*$ annihilation检测到的AMS-02的GEV抗iProton多余。在本文中,我们旨在使用银河系矮球(DSPH)星系的$ fermi $ -lat观测来测试三个异常/过量的常见I2HDM起源。我们对具有J因子测量值的19个DSPHS进行单一和堆叠分析。我们发现,我们的上限低于最受欢迎的参数,并且似乎能够排除三个异常/过量的共同起源的可能性。但是,由于J因子的测量值包括相对较大的不确定性,这来自恒星运动学的测量结果,因此是否可以可靠地排除该模型,需要通过未来的观察结果进一步确认。

A recent result from Fermilab suggests that the measured W-boson mass deviates from the prediction of the Standard Model (SM) with a significance of $>7σ$, and there may exist new physics beyond the SM. It is proposed that the inert two Higgs doublet model (i2HDM) can well explain the new W-boson mass. Meanwhile, the lightest neutral scalar $S$ in the i2HDM can be stable and play the role of dark matter with a preferred dark matter mass of $\sim 54-74$ GeV. It is also found that part of the parameter space of this model can explain both the Galactic center GeV gamma-ray excess detected by $Fermi$-LAT and the GeV antiproton excess detected by AMS-02 through a $SS\rightarrow WW^*$ annihilation. In this paper, we aim to test the possible common i2HDM origin of the three anomaly/excesses using the $Fermi$-LAT observations of Milky Way dwarf spheroidal (dSph) galaxies. We perform single and stacking analyses on 19 dSphs that have J-factor measurements. We find that our upper limits are below the favored parameters and seems to be able to exclude the possibility of a common origin of the three anomaly/excesses. However, because the J-factor measurements include relatively large uncertainties, which come from the measurements of stellar kinematics, whether this model could be reliably excluded needs to be further confirmed by future observations.

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