اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدBranching ratio study of ZH->qqcc/qqbb
43
0
0.0
(
0
)
تأليف
Hiroaki Ono
اسأل ChatGPT حول البحث
ﻻ يوجد ملخص باللغة العربية
Precise measurement of the Higgs boson properties is an important issue of the International Linear Collider (ILC) experiment to verify the particles mass generation mechanism that the coupling strength between the Higgs boson and the fermions or vector bosons are proportional to the mass of each particle. Thus the measurement of the branching ratio of the Higgs boson an important issue to understand the mass of each particle. In this analysis, measurement accuracy of the Higgs boson branching ratio in the ZH->qqH hadronic decay mode was studied with the cut-based analysis in Higgs mass of M_{H}=120 GeV at the center-of-mass energy of sqrt{s}=250 GeV with the ILD detector model. From the analysis, we estimate the measurement accuracy of the relative Higgs boson branching ratio of BR(H->cc)$ to BR(H->bb) as 13.68%.
قيم البحث
اقرأ أيضاً
The branching fraction for the decay $K^{-} to pi^{0} e bar u$ is measured using in-flight decays detected with {bf ISTRA+} setup working at the 25 GeV negative secondary beam of the U-70 PS:linebreak $Br_{K_{e3}}= (5.124 pm 0.009 (stat) pm 0.029(no
rm) pm 0.030(syst))%$. From this value the $|V_{us}|$ element of the CKM matrix is extracted, using previously measured $f_{+}(t)$ form factor: $|V_{us}|=0.227 pm 0.002$. The results are in agreement with recent measurements by BNL E865, FNAL KTeV, KLOE.
The PEN Collaboration is conducting a new measurement of the pi+ -> e+ nu branching ratio at the Paul Scherrer Institute, with the goal uncertainty of delta B/B(pie2)=5E-4 or lower. At present, the combined accuracy of all published pie2 decay measur
ements lags behind the theoretical calculation by a factor of 40. In this contribution we report on the PEN detector configuration and its performance during two development runs done in 2007 and 2008.
Precise measurement of the Higgs boson properties is an important issue of the International Linear Collider (ILC) experiment. We studied the accuracy of the Higgs mass reconstruction in the ZH->qqH multi-jet process with the Higgs mass of MH = 120 G
eV at sqrt(s) = 250 GeV with the ILD detector model. In this study, we obtained the reconstructed Higgs mass of M_H = 120.79 +- 0.089 GeV and 5.3% measurement accuracy of the cross-section for ZH->qqbb with the integrated luminosity of L=250 fb^{-1} data samples.
We carried out a feasibility study on the measurement of the branching ratio of H -> cc_bar at a future e+e- linear collider. We used the topological vertex reconstructing algorithm for accumulating secondary vertex information and the neural network
for optimizing c quark selection. With an assumption of a light Higgs mass of 120 GeV/c^2, we estimated the statistical error of Br(H -> cc_bar) to be 20.1% or 25.7% depending on the number of vertex detector layers at the center-of-mass energy of 250 GeV and the intergrated luminosity of 500 fb^-1.
The process e+e-->mu+mu- has been studied by SND detector at VEPP-2M e+e- collider in the phi(1020)-resonance energy region. The measured effective phi meson leptonic branching ratio: B(phi->l+l-)=sqrt{B(phi->e+e-)*B(phi->mu+mu-)}=(2.89+-0.10+-0.06)*
10^{-4} agrees well with the PDG value B(phi->e+e-)=(2.91+-0.07)*10^{-4} confirming mu-e universality. Without additional assumption of mu-e universality the branching ratio B(phi->mu+mu-)=(2.87+-0.20+-0.14)*10^{-4} was obtained.
سجل دخول لتتمكن من نشر تعليقات
التعليقات
جاري جلب التعليقات
سجل دخول لتتمكن من متابعة معايير البحث التي قمت باختيارها
