کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8187195 | 1528781 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Next-to-leading-order QCD corrections to e+eâ â H + γ
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The associated production of Higgs boson with a hard photon at lepton collider, i.e., e+eââHγ, is known to bear a rather small cross section in Standard Model, and can serve as a sensitive probe for the potential new physics signals. Similar to the loop-induced Higgs decay channels Hâγγ,Zγ, the e+eââHγ process also starts at one-loop order provided that the tiny electron mass is neglected. In this work, we calculate the next-to-leading-order (NLO) QCD corrections to this associated H+γ production process, which mainly stem from the gluonic dressing to the top quark loop. The QCD corrections are found to be rather modest at lower center-of-mass energy range (s<300GeV), thus of negligible impact on Higgs factory such as CEPC. Nevertheless, when the energy is boosted to the ILC energy range (sâ400GeV), QCD corrections may enhance the leading-order cross section by 20%. In any event, the e+eââHγ process has a maximal production rate Ïmaxâ0.08fb around s=250GeV, thus CEPC turns out to be the best place to look for this rare Higgs production process. In the high energy limit, the effect of NLO QCD corrections become completely negligible, which can be simply attributed to the different asymptotic scaling behaviors of the LO and NLO cross sections, where the former exhibits a milder decrement â1/s , but the latter undergoes a much faster decrease â1/s2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 775, 10 December 2017, Pages 152-159
Journal: Physics Letters B - Volume 775, 10 December 2017, Pages 152-159
نویسندگان
Wen-Long Sang, Wen Chen, Feng Feng, Yu Jia, Qing-Feng Sun,