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Several important processes and analyses at the LHC are sensitive to higher-order perturbative corrections beyond what can currently be calculated at fixed order. One important class of logarithmic corrections are those which appear when…

高能物理 - 唯象学 · 物理学 2022-02-04 Emmet P. Byrne

We extend a previous analysis of the lowest-lying octet baryon masses in covariant baryon chiral perturbation theory (ChPT) by explicitly taking into account the contribution of the virtual decuplet baryons. Up to…

核理论 · 物理学 2013-05-07 Xiu-Lei Ren , Lisheng Geng , Jie Meng , Hiroshi Toki

This report was prepared in the context of the LPCC "Electroweak Precision Measurements at the LHC WG" and summarizes the activity of a subgroup dedicated to the systematic comparison of public Monte Carlo codes, which describe the…

The large center of mass energy and increasing statistical precision for a wide range of hadronic final state observables at the HERA lepton-proton collider has provided a detailed testing ground for QCD dynamics. Fully flexible…

高能物理 - 唯象学 · 物理学 2007-05-23 E. Mirkes

We compute the next-to-leading order corrections of $O(\alpha_s^2\alpha^3)$ to the hadronic production of two oppositely charged leptons and two hard jets, $p p \to j j l^- l^+$, using Recola and Collier. We include electroweak and QCD…

高能物理 - 唯象学 · 物理学 2015-06-23 Ansgar Denner , Lars Hofer , Andreas Scharf , Sandro Uccirati

We analyze the impact of QCD corrections on limits derived from neutrinoless double beta decay ($0\nu\beta\beta$). As demonstrated previously, the effect of the color-mismatch arising from loops with gluons linking the quarks from different…

高能物理 - 唯象学 · 物理学 2017-07-19 Carolina Arbeláez , Marcela González , Sergey Kovalenko , Martin Hirsch

QCD corrections to the electroweak one-loop result for the partial width $\Gamma(H\rightarrow b\bar{b})$ are studied. For the decay channel into bottom quarks the rate is affected by a virtual top quark through electroweak interactions. The…

高能物理 - 唯象学 · 物理学 2009-10-28 A. Kwiatkowski , M. Steinhauser

We present next-to-leading order QCD corrections to production of two $W$ bosons in hadronic collisions in the extra dimension ADD model. Various kinematical distributions are obtained to order $\alpha_s$ in QCD by taking into account all…

高能物理 - 唯象学 · 物理学 2010-09-20 Neelima Agarwal , V. Ravindran , Vivek Kumar Tiwari , Anurag Tripathi

First, we present a combined analysis of ${\rm p}{\rm p} \to \mu^+ \nu_\mu {\rm e}^- \bar \nu_{\rm e}$ and ${\rm p}{\rm p} \to \mu^+ \nu_\mu {\rm e}^- \bar \nu_{\rm e} {\rm j}$ at next-to-leading order, including both QCD and electroweak…

高能物理 - 唯象学 · 物理学 2020-12-02 Stephan Bräuer , Ansgar Denner , Mathieu Pellen , Marek Schönherr , Steffen Schumann

Hard processes in collider experiments typically produce QCD jets, which have long served as precision tests of QCD in the vacuum. More recently, heavy-ion programs at RHIC and the LHC have offered a novel perspective on jets, establishing…

高能物理 - 唯象学 · 物理学 2025-10-01 Yacine Mehtar-Tani

We consider the production of heavy quark jets at the $Z$-pole at the next-to-leading order (NLO) using the {\it Cambridge jet-algorithm}. We study the effects of the quark mass in two- and three-jet observables and the uncertainty due to…

高能物理 - 唯象学 · 物理学 2009-10-31 Mikhail Bilenky , Susana Cabrera , Joan Fuster , Salvador Marti , German Rodrigo , Arcadi Santamaria

Precision studies of the production of a high-transverse momentum lepton in association with missing energy at hadron colliders require that electroweak and QCD higher-order contributions are simultaneously taken into account in theoretical…

高能物理 - 唯象学 · 物理学 2010-01-22 G. Balossini , C. M. Carloni Calame , G. Montagna , M. Moretti , O. Nicrosini , F. Piccinini , M. Treccani , A. Vicini

We present in detail a calculation of the next-to-leading order QCD corrections to the process $e^+e^-\to 3$ jets with massive quarks. To isolate the soft and collinear divergencies of the four parton matrix elements, we modify the phase…

高能物理 - 唯象学 · 物理学 2009-10-30 Arnd Brandenburg , Peter Uwer

We present the calculation of next-to-leading-order electroweak corrections to W-boson pair production at the LHC, taking off-shell effects of the W bosons and their leptonic decays into account in the framework of the so-called double-pole…

高能物理 - 唯象学 · 物理学 2015-06-17 M. Billoni , S. Dittmaier , B. Jager , C. Speckner

Quantum chromodynamics (QCD) effects in the semileptonic decay b -> c l nu are evaluated to the second order in the coupling constant, O(alpha_s^2), and to several orders in the expansion in quark masses, m_c/m_b. Corrections are calculated…

高能物理 - 唯象学 · 物理学 2008-11-26 Alexey Pak , Andrzej Czarnecki

We present details of the calculation of the $pp\to W(\to l\nu) \gamma$ process at next-to-next-to-leading order in QCD, calculated using the jettiness slicing method. The calculation is based entirely on analytic amplitudes. Because of the…

高能物理 - 唯象学 · 物理学 2021-09-16 John M. Campbell , Giuseppe De Laurentis , R. Keith Ellis , Satyajit Seth

The detailed study of vector-boson pair production processes at the LHC will lead to a better understanding of electroweak physics. As pointed out before, a consistent inclusion of higher-order electroweak effects in the analysis of…

高能物理 - 唯象学 · 物理学 2014-01-17 Stefan Gieseke , Tobias Kasprzik , Johann H. Kühn

As an important signature of the quark-gluon plasma (QGP), a high-precision energy-loss model is essential to independently verify the QGP properties extracted from soft particles. In this work, we optimize the energy loss modeling in…

高能物理 - 唯象学 · 物理学 2025-03-06 Rouzbeh Modarresi-Yazdi , Shuzhe Shi , Charles Gale , Sangyong Jeon

A brief summary of the calculation of the NLO QCD corrections to the process pp -> e+ ve mu- v_mu bb~ j + X is reported. This provides a complete description of the process of t-tbar + jet production with leptonic decays beyond the…

高能物理 - 唯象学 · 物理学 2016-07-01 Giuseppe Bevilacqua

In LHC searches for new and rare phenomena the top-associated channel $pp \to t\overline{t}W^\pm +X$ is a challenging background that multilepton analyses must overcome. Motivated by sustained measurements of enhanced rates of same-sign and…

高能物理 - 唯象学 · 物理学 2020-12-08 Stefan von Buddenbrock , Richard Ruiz , Bruce Mellado