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arXiv 1603.01065hep-ph
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CLIC中反常四次耦合与光束偏振的探讨

Probe of the Anomalous Quartic Couplings with Beam Polarization at the CLIC

A. Senol, M. Köksal, S. C. İnan

摘要:

在紧凑型直线对撞机上研究了非极化和极化电子(正电子)束$e^{+}e^{-}\rightarrow ν_{e} W^{-} W^{+} \barν_{e}$过程的半轻子衰变通道中由8维算符定义的反常四次耦合。我们给出了不同积分光度和质心能量值下反常$\frac{f_{S0}}{Λ^{4}}$、$\frac{f_{S1}}{Λ^{4}}$和$\frac{f_{T0}}{Λ^{4}}$耦合的$95\%$置信限。通过$e^{+}e^{-}\rightarrow ν_{e} W^{-} W^{+} \barν_{e}$过程,在$\sqrt{s}=3$ TeV的光束偏振和$L_{int}=2000$ fb $^{-1}$的积分光度下,对异常$\frac{f_{S0}}{Λ^{4}}$、$\frac{f_{S1}}{Λ^{4}}$和$\frac{f_{T0}}{Λ^{4}}$耦合获得的最佳灵敏度为$[-4.05;\, 3.67]\times 10^{-12}$ GeV $^{-4}$、$[-3.08; \, 2.12]\times 10^{-12}$ GeV $^{-4}$、$[-1.98; \, 0.64]\times 10^{-13}$ GeV $^{-4}$,这表明在当前界限上的改进。

英文摘要:

We have investigated the anomalous quartic couplings defined by the dimension-8 operators in semileptonic decay channel of the $e^{+}e^{-}\rightarrow ν_{e} W^{-} W^{+} \barν_{e}$ process for unpolarized and polarized electron (positron) beam at the Compact Linear Collider. We give the $95\%$ confidence level bounds on anomalous $\frac{f_{S0}}{Λ^{4}}$, $\frac{f_{S1}}{Λ^{4}}$ and $\frac{f_{T0}}{Λ^{4}}$ couplings for various values of the integrated luminosities and center-of-mass energies. The best sensitivities obtained on anomalous $\frac{f_{S0}}{Λ^{4}}$, $\frac{f_{S1}}{Λ^{4}}$ and $\frac{f_{T0}}{Λ^{4}}$ couplings through the process $e^{+}e^{-}\rightarrow ν_{e} W^{-} W^{+} \barν_{e}$ with beam polarization at $\sqrt{s}=3$ TeV and an integrated luminosity of $L_{int}=2000$ fb$^{-1}$ are $[-4.05;\, 3.67]\times 10^{-12}$ GeV$^{-4}$, $[-3.08; \, 2.12]\times 10^{-12}$ GeV$^{-4}$, $[-1.98; \, 0.64]\times 10^{-13}$ GeV$^{-4}$, which show improvement over the current bounds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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