<p>Recent CMS analyses report an excess in the diphoton-plus-<InlineEquation ID="IEq1"> <EquationSource Format="MATHML"><math display="inline"> <mi>b</mi> <mover accent="true"> <mi>b</mi> <mo stretchy="true">¯</mo> </mover> </math></EquationSource> <EquationSource Format="TEX">\( b\overline{b} \)</EquationSource> </InlineEquation> channel, indicative of a heavy resonance around 650 GeV decaying into a Standard Model (SM)-like Higgs boson and a lighter scalar near 95 GeV. The case for a 95 GeV state is further supported by diphoton excesses observed by both CMS and ATLAS, as well as a <InlineEquation ID="IEq2"> <EquationSource Format="MATHML"><math display="inline"> <mi>b</mi> <mover accent="true"> <mi>b</mi> <mo stretchy="true">¯</mo> </mover> </math></EquationSource> <EquationSource Format="TEX">\( b\overline{b} \)</EquationSource> </InlineEquation> excess previously observed at the Large Electron-Position collider. This study presents a unified interpretation of these anomalies within the framework of the General Next-to-Minimal Supersymmetric Standard Model that naturally accommodates a light singlet-dominated <i>CP</i>-even scalar boson <i>h</i><sub><i>s</i></sub> near 95 GeV and a heavier doublet-like scalar boson <i>A</i><sub><i>H</i></sub> near 650 GeV. Through a comprehensive scan of the parameter space, we demonstrate that the model can explain these excesses at 2 <i>σ</i> level while satisfying constraints from the dark matter relic density, direct detection experiments, the properties of the 125 GeV Higgs boson, <i>B</i>-physics observables, and searches for electroweakinos at the Large Hadron Collider (LHC). The interpretation features a Bino-dominated lightest neutralino as the dark matter candidate, whose relic abundance is achieved primarily via <i>A</i><sub><i>s</i></sub> funnel annihilation or coannihilation with <InlineEquation ID="IEq3"> <EquationSource Format="MATHML"><math display="inline"> <mover accent="true"> <mi>S</mi> <mo stretchy="true">~</mo> </mover> </math></EquationSource> <EquationSource Format="TEX">\( \overset{\sim }{S} \)</EquationSource> </InlineEquation>-like <InlineEquation ID="IEq4"> <EquationSource Format="MATHML"><math display="inline"> <msubsup> <mover accent="true"> <mi>χ</mi> <mo stretchy="true">~</mo> </mover> <mn>2</mn> <mn>0</mn> </msubsup> <mi mathvariant="normal">s</mi> </math></EquationSource> <EquationSource Format="TEX">\( {\overset{\sim }{\chi}}_2^0\textrm{s} \)</EquationSource> </InlineEquation> into <i>h</i><sub><i>s</i></sub><i>A</i><sub><i>H</i></sub> final states. Our findings provide clear predictions for testing this scenario at the high-luminosity LHC and future colliders.</p>

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Scalar resonances near 650 and 95 GeV in the GNMSSM with correct dark matter relic abundance

  • Jingwei Lian,
  • Yao-Bei Liu

摘要

Recent CMS analyses report an excess in the diphoton-plus- b b ¯ \( b\overline{b} \) channel, indicative of a heavy resonance around 650 GeV decaying into a Standard Model (SM)-like Higgs boson and a lighter scalar near 95 GeV. The case for a 95 GeV state is further supported by diphoton excesses observed by both CMS and ATLAS, as well as a b b ¯ \( b\overline{b} \) excess previously observed at the Large Electron-Position collider. This study presents a unified interpretation of these anomalies within the framework of the General Next-to-Minimal Supersymmetric Standard Model that naturally accommodates a light singlet-dominated CP-even scalar boson hs near 95 GeV and a heavier doublet-like scalar boson AH near 650 GeV. Through a comprehensive scan of the parameter space, we demonstrate that the model can explain these excesses at 2 σ level while satisfying constraints from the dark matter relic density, direct detection experiments, the properties of the 125 GeV Higgs boson, B-physics observables, and searches for electroweakinos at the Large Hadron Collider (LHC). The interpretation features a Bino-dominated lightest neutralino as the dark matter candidate, whose relic abundance is achieved primarily via As funnel annihilation or coannihilation with S ~ \( \overset{\sim }{S} \) -like χ ~ 2 0 s \( {\overset{\sim }{\chi}}_2^0\textrm{s} \) into hsAH final states. Our findings provide clear predictions for testing this scenario at the high-luminosity LHC and future colliders.