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外文期刊>The journal of high energy physics
>Enhancing $$ toverline{t}hh $$ production through CP-violating top-Higgs interaction at the LHC and future colliders
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Enhancing $$ toverline{t}hh $$ production through CP-violating top-Higgs interaction at the LHC and future colliders
A bstract The measurement of Higgs self-coupling is one of the most crucial physics goals at the future colliders. At the LHC, the di-Higgs production is a main way to measure the Higgs trilinear coupling. As a complementary to the di-Higgs production, t t ˉ h h $$ toverline{t}hh $$ process may open a new avenue to measure di-Higgs physics at the LHC and a future 100 TeV pp collider or a high energy e _(+) e _(?) collider since the extra t t ˉ $$ toverline{t} $$ in the final states may efficiently suppress the backgrounds. However, such a kind of process is also controlled by the top-Higgs coupling. In this work, we investigate the impact of CP-violating top-Higgs coupling on t t ˉ h h $$ toverline{t}hh $$ production at the LHC, e _(+) e _(?) and a 100 TeV hadron collider under the current Higgs data. Within 2σ Higgs data allowed parameter region, we find that the cross section of t t ˉ h h $$ toverline{t}hh $$ at the LHC-14 TeV, e _(+) e _(?)-1 TeV and VHE-LHC/SPPC-100 TeV can be enhanced up to 2.1 times the SM predictions. The future precise measurement of Higgs coupling will reveal the nature of top-Higgs interaction and improve the sensitivity of the determination of Higgs self-coupling through t t ˉ h h $$ toverline{t}hh $$ production.
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机译：BSTRACT自我耦合的测量是未来妇女最重要的物理目标之一。在LHC，DI-HIGGS生产是测量HIGGS三线性耦合的主要方式。作为Di-Higgs生产的互补，TTˉHH$$ T overline {T} HH $$流程可能开辟了新的大道，以测量LHC的DI-HIGGS物理和未来100 TEV PP撞机或高能量E _（+）E _（？）撞机以来，最终状态中的额外TTˉ$$ T ovline {t} $$可以有效地抑制背景。然而，这种过程也由顶部 - HGGS耦合控制。在这项工作中，我们调查CP违反顶级顶级耦合对TTˉHH$$ T overline {T} HH $$生产的影响，E _（+）e_（？）和100 tev在当前的HIGGS数据下的Holron撞机。在2σhiggs数据中允许参数区域，我们发现TTˉHH$$ T overline {T} HH $$在LHC-14 TEV中，E _（+）e_（？） - 1 TEV和VHE-LHC / SPPC-100 TEV可以提高SM预测的2.1倍。未来的HIGGS联轴器的精确测量将揭示顶部HIGGS相互作用的性质，并提高通过T T T overline {T} HH $$生产来确定HIGGS的敏感性。
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