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相关论文: Initial State Radiative Corrections to $Z^0$\ Pair…

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At $e^+ \, e^-$ colliders the QED--initial state radiation forms a large part of the radiative corrections. Their precise and fast evaluation is an essential asset for the experiments at LEP, the ILC and the FCC-ee, operating at high…

高能物理 - 唯象学 · 物理学 2023-11-27 J. Blümlein , A. De Freitas , C. G. Raab , K. Schönwald

A precise measurement of the cross section for the process e+e- --> K+K-(gamma) from threshold to an energy of 5 GeV is obtained with the initial-state radiation (ISR) method using 232 fb^{-1} of data collected with the BaBar detector at…

高能物理 - 实验 · 物理学 2013-09-04 The BaBar Collaboration , J. P. Lees , others

Initial state radiation (ISR) plays an important role in $e^+$$e^-$ collision experiments such as the BESIII. To correct the ISR effects in measurements of hadronic cross-sections of $e^+e^-$ annihilation, an iterative method that weights…

高能物理 - 实验 · 物理学 2021-05-10 Wenyu Sun , Tong Liu , Maoqiang Jing , Liangliang Wang , Bin Zhong , Weimin Song

Radiative one-loop corrections to fermion pair production in $e^+e^-$ annihilation are calculated in the Minimal Supersymmetric Standard Model (MSSM). The size of the non-standard corrections is discussed for the process e^+e^- to mu^+mu^-…

高能物理 - 唯象学 · 物理学 2009-10-31 W. Hollik , C. Schappacher

The recently completed calculation of the full electroweak O(alpha) corrections to the charged-current four-fermion production processes e+e- --> nu_tau tau+ mu- anti-nu_mu, u anti-d mu- anti-nu_mu, and u anti-d s anti-c is briefly…

高能物理 - 唯象学 · 物理学 2008-11-26 A. Denner , S. Dittmaier , M. Roth , L. H. Wieders

We have calculated the complete O(alpha) and O(alpha_s) radiative corrections to the Higgs-production process e+ e- -> t anti-t H in the Standard Model. This process is particularly interesting for the measurement of the top-quark Yukawa…

高能物理 - 唯象学 · 物理学 2008-11-26 A. Denner , S. Dittmaier , M. Roth , M. M. Weber

We calculate the ${\cal O}(\alpha_{{\rm ew}})$ electroweak radiative corrections to $e^+ e^- \to t \bar{t} h$ at a electron-positron linear collider (LC) in the standard model. We analyze the dependence of the ${\cal O}(\alpha_{{\rm ew}})$…

高能物理 - 唯象学 · 物理学 2009-11-10 You Yu , Ma Wen-Gan , Chen Hui , Zhang Ren-You , Sun Yan-Bin , Hou Hong-Sheng

Motivated by the future precision test of the Higgs boson at an $e^+e^-$ Higgs factory, we calculate the production $e^+e^- \to ZH\gamma$ in the Standard Model with complete next-to-leading order electroweak corrections. We find that for…

高能物理 - 唯象学 · 物理学 2015-06-18 Ning Liu , Jie Ren , Lei Wu , Peiwen Wu , Jin Min Yang

We calculate the standard model predictions for top quark pair production and decay into six fermions at a linear e+ e- collider. We include the factorizable electroweak O(alpha) corrections in the pole approximation and QED corrections due…

高能物理 - 唯象学 · 物理学 2009-01-07 Karol Kolodziej , Adam Staron , Alejandro Lorca , Tord Riemann

The cross-section for W^+W^- \to W^+W^- with arbitrarily polarized W bosons is calculated within the Electroweak Standard Model including the complete virtual and soft-photonic O(alpha) corrections. We show the numerical importance of the…

高能物理 - 唯象学 · 物理学 2008-11-26 A. Denner , T. Hahn

The production of W+ W- b bbar from e+ e- collisions at energies close to the t tbar threshold is dominated by the resonant process with a nearly on-shell t tbar intermediate state. The W b pairs in the final state can also be reached…

高能物理 - 唯象学 · 物理学 2022-09-21 M. Beneke , B. Jantzen , P. Ruiz-Femenia

The exact analytic form of cross sections including initial state radiation with Kuraev-Fadin radiative function are obtained for $e^+e^-$ annihilation around a resonance. Despite accounting for vacuum polarization and center-of-mass energy…

高能物理 - 唯象学 · 物理学 2024-10-01 Baoxin Liu , Zhenyu Zhang , Xiang Zhou

The complete one-loop QED initial state, final state and initial--final state interference corrections to the process e+e- -> pi+pi- are presented. Analytic formulae are given for the virtual and for the real photon corrections. The total…

高能物理 - 唯象学 · 物理学 2011-09-13 A. Hoefer , J. Gluza , F. Jegerlehner

At energies ($\sqrt{s}$) much higher than the electroweak gauge boson masses ($M$) large logarithmic corrections of the scale ratio $\sqrt{s}/M$ occur. While the electroweak Sudakov type double (DL) and universal single (SL) logarithms have…

高能物理 - 唯象学 · 物理学 2009-11-07 Michael Melles

QCD corrections to the electron positron annihilation cross-section into hadrons and to the hadronic $Z$ boson decay rate are reviewed. Formal developments are introduced in a form particularly suited for practical applications. These…

高能物理 - 唯象学 · 物理学 2009-10-28 K. G. Chetyrkin , J. H. Kühn , A. Kwiatkowski

The full $\mathcal{O}(\alpha)$ electroweak radiative corrections to $t \bar{t} \gamma$ and $e^-e^+\gamma$ productions at the International Linear Collider (ILC) are presented in this paper. The computation is performed with the help of…

This note presents a combination of published and preliminary electroweak results from the four LEP collaborations and the SLD collaboration which were prepared for the 2003 summer conferences. Averages from $\Zzero$ resonance results are…

Using the method of massive operator matrix elements, we calculate the subleading QED initial state radiative corrections to the process $e^+e^- \rightarrow \gamma^*/Z^*$ for the first three logarithmic contributions from $O(\alpha^3 L^3),…

高能物理 - 唯象学 · 物理学 2020-05-20 J. Ablinger , J. Blümlein , A. De Freitas , K. Schönwald

This document reviews the general approach to correcting the process e+e-->X->ffbar for radiative effects, where X represents an exchanged gauge boson arising from some new physics. The validity of current methods is discussed in the…

高能物理 - 唯象学 · 物理学 2007-05-23 K. M. Hamilton

We review recent theoretical progress in the computation of radiative corrections beyond one loop within the standard model of electroweak interactions, both in the gauge and Higgs sectors. In the gauge sector, we discuss universal…

高能物理 - 唯象学 · 物理学 2007-05-23 Bernd A. Kniehl