Solving the muon g-2 anomaly in CMSSM extension with non-universal gaugino masses

Solving the muon g-2 anomaly in CMSSM extension with non-universal gaugino masses
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用非通用高吉诺质量解决 CMSSM 扩展中的 muon g-2 异常

DOI:
10.1007/jhep12(2018)041
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发表时间:
2018-08
期刊:
JHEP
影响因子:
--
通讯作者:
J. Zhu
J. Zhu
中科院分区:
其他
文献类型:
--
作者:
F. Wang;K. Wang;J. M. Yang;J. Zhu

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我们提出在SU(5)大统一理论(GUT)中利用广义Planck标度介导的SUSY破缺机制产生非普适的Gaugino质量,其中非普适性来自于SU(5)的Higgs场的各种高维表示的最低分量VEV和唯一的F项VEV的适当波函数归一化。针对广泛研究的场景,给出了对高吉诺质量比的不同预测。类似于胶子-SUGRA的情形,即胶子比winos、bino和万有标量质量重得多,可以通过适当组合这种高代表性的希格斯场来容易地实现。在我们的方案中,有六个GUT尺度自由参数,我们可以优雅地解决mSUGRA和目前的实验结果之间的紧张关系,包括μ子g-2,暗物质(DM)遗迹密度和直接sparticle搜索边界从LHC。考虑到我们数值扫描中的电流约束,我们有以下观察结果:(i)具有中等M3(1.5TeV)的大tan β(1.35)样品,|A0/M3|(2000年)4)和小的m A(~ 14 TeV)有利于产生125 GeV的类SM Higgs,并预言大的μ子g-2,而终止质量和μ参数主要由|M 3|(M 0,|M 1|,|M 2|(ii)具有负M3的中等tan β(35 <$40)样品可以具有轻的Smuon(250 ~ 450 GeV),但一个重态(~ 1 TeV),这预示着一个大的μ介子g-2,但一个小的Br(B s→ μ+ μ−);(3)要获得正确的DM遗迹密度,湮灭机制应该是Stau交换、Stau共湮灭、Chargino共湮灭,slepton湮灭和其中两个或三个的组合;(iv)为了获得正确的DM遗迹密度,与自旋无关的DM-核子截面通常比XENON 1 T 2018的当前极限小得多,并且比LZ和XENONnT实验的未来检测灵敏度低一个数量级。
We propose to generate non-universal gaugino masses in SU (5) Grand Unified Theory (GUT) with the generalized Planck-scale mediation SUSY breaking mechanism, in which the non-universality arises from proper wavefunction normalization with lowest component VEVs of various high dimensional representations of the Higgs fields of SU (5) and an unique F-term VEV by the singlet. Different predictions on gaugino mass ratios with respect to widely studied scenarios are given. The gluino-SUGRA-like scenario, where gluinos are much heavier than winos, bino and universal scalar masses, can be easily realized with appropriate combinations of such high-representation Higgs fields. With six GUT-scale free parameters in our scenario, we can solve elegantly the tension between mSUGRA and the present experimental results, including the muon g-2, the dark matter (DM) relic density and the direct sparticle search bounds from the LHC. Taking into account the current constraints in our numerical scan, we have the following observations:(i) The large-tan β (≳ 35) samples with a moderate M 3 (∼ 5 TeV), a small| A 0/M 3|(≲ 0. 4) and a small m A (≲ 4 TeV) are favoured to generate a 125 GeV SM-like Higgs and predict a large muon g-2, while the stop mass and μ parameter, mainly determined by| M 3|(≫ M 0,| M 1|,| M 2|), can be about 6 TeV;(ii) The moderate-tan β (35∼ 40) samples with a negative M 3 can have a light smuon (250∼ 450 GeV) but a heavy stau (≳ 1 TeV), which predict a large muon g-2 but a small Br (B s→ μ+ μ−);(iii) To obtain the right DM relic density, the annihilation mechanisms should be stau exchange, stau coannihilation, chargino coannihilation, slepton annihilation and the combination of two or three of them;(iv) To obtain the right DM relic density, the spin-independent DM-nucleon cross section is typically much smaller than the present limits of XENON1T 2018 and also an order of magnitude lower than the future detection sensitivity of LZ and XENONnT experiments.
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