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On Determining $\alpha_s(m_Z)$ from Dijets in $e^+e^-$ Thrust / Benitez, Miguel A. (Salamanca U., IUFFyM) ; Hoang, Andre H. (Vienna U.) ; Mateu, Vicent (Salamanca U., IUFFyM) ; Stewart, Iain W. (Vienna U. ; MIT) ; Vita, Gherardo (CERN)
We update a previous N$^3$LL$^\prime$+${\cal O}(\alpha_s^3)$ determination of the strong coupling from a global fit to thrust data by including newly available perturbative ingredients, upgrading the renormalization scales to include a fully canonical scaling region, and implementing the log resummation in a way which ensures the integrated cross section is unaffected by the the leading $1/Q$ hadronization power corrections. [...]
MIT-CTP 5746 ; CERN-TH-2024-142 ; UWThPh2024-8 ; arXiv:2412.15164. - 66.
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Determining $\alpha_s(m_Z)$ from Thrust with Power Corrections / Benitez-Rathgeb, Miguel A. (Salamanca U., IUFFyM) ; Hoang, André H. (Vienna U.) ; Mateu, Vicent (Salamanca U., IUFFyM) ; Stewart, Iain W. (MIT, Cambridge, CTP) ; Vita, Gherardo (CERN)
We update and extend a previous N$^3$LL$^\prime$+${\cal O}(\alpha_s^3)$ strong coupling determination from thrust data. [...]
arXiv:2405.14380 ; MIT/CTP-5723 ; CERN-TH-2024-063 ; UWThPh 2024-12. - 4.
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50 Years of Quantum Chromodynamics / Gross, Franz (Jefferson Lab ; William-Mary Coll.) ; Klempt, Eberhard (Bonn U., HISKP) ; Brodsky, Stanley J. (SLAC) ; Buras, Andrzej J. (TUM-IAS, Munich) ; Burkert, Volker D. (Jefferson Lab) ; Heinrich, Gudrun (KIT, Karlsruhe, TP) ; Jakobs, Karl (Freiburg U.) ; Meyer, Curtis A. (Carnegie Mellon U.) ; Orginos, Kostas (Jefferson Lab ; William-Mary Coll.) ; Strickland, Michael (Kent State U.) et al.
This paper presents a comprehensive review of both the theory and experimental successes of Quantum Chromodynamics, starting with its emergence as a well defined theory in 1972-73 and following developments and results up to the present day. Topics include a review of the earliest theoretical and experimental foundations; the fundamental constants of QCD; an introductory discussion of lattice QCD, the only known method for obtaining exact predictions from QCD; methods for approximating QCD, with special focus on effective field theories; QCD under extreme conditions; measurements and predictions of meson and baryon states; a special discussion of the structure of the nucleon; techniques for study of QCD at high energy, including treatment of jets and showers; measurements at colliders; weak decays and quark mixing; and a section on the future, which discusses new experimental facilities or upgrades currently funded. [...]
arXiv:2212.11107.- 2023-12 - 636 p. - Published in : Eur. Phys. J. C 83 (2023) 1125 Fulltext: 2212.11107 - PDF; Publication - PDF; External link: JLAB Document Server

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Precise QCD Description of the Higgs Boson Transverse Momentum Spectrum / Chen, Xuan (U. Zurich (main)) ; Gehrmann, Thomas (U. Zurich (main)) ; Glover, E.W. Nigel (Durham U.) ; Huss, Alexander (CERN) ; Li, Ye (Fermilab) ; Neill, Duff (Los Alamos) ; Schulze, Markus (Humboldt U., Berlin) ; Stewart, Iain W. (MIT, Cambridge, CTP) ; Zhu, Hua Xing (Zhejiang U.)
The transverse momentum ($p_T$) distribution of Higgs bosons at hadron colliders enables a detailed probe of its production dynamics and is a key ingredient to precision studies of Higgs boson properties, but receives very large QCD corrections. We obtain a precision prediction for the $p_T$ spectrum by matching second-order (NNLO) QCD corrections at large $p_T$ with resummation of third-order logarithmic (N$^3$LL) corrections at small $p_T$. [...]
arXiv:1805.00736; IPPP/18/28; ZU-TH 16/18; CERN-TH-2018-108; MIT-CTP 5013; HU-EP-18/14; FERMILAB-PUB-18-212-T.- 2019-01-10 - 6 p. - Published in : Phys. Lett. B 788 (2019) 425 Article from SCOAP3: PDF; Fulltext: fermilab-pub-18-213-t - PDF; 1805.00736 - PDF; External link: Fermilab Library Server (fulltext available)

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Status of SIMBA / Bernlochner, Florian U. (Humboldt U., Berlin) ; Lacker, Heiko (Humboldt U., Berlin) ; Ligeti, Zoltan (LBL, Berkeley) ; Stewart, Iain W. (MIT, LNS) ; Tackmann, Frank J. (MIT) ; Tackmann, Kerstin (CERN)
The goal of the SIMBA collaboration is to provide a global fit to the available data in inclusive B -> X_s gamma and B -> X_u l nu decays. [...]
arXiv:1101.3310. - 2011. - 7 p.
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Towards a global fit to extract the B->Xs gamma decay rate and Vub / Bernlochner, Florian U. (Humboldt U., Berlin) ; Lacker, Heiko (Humboldt U., Berlin) ; Ligeti, Zoltan (LBL, Berkeley ; UC, Berkeley) ; Stewart, Iain W. (MIT) ; Tackmann, Frank J. (MIT) ; Tackmann, Kerstin (CERN)
The total B->Xs gamma decay rate and the CKM-matrix element Vub play an important role in finding indirect evidence for new physics affecting the flavor sector of the Standard Model, complementary to direct searches at the LHC and Tevatron. Their determination from inclusive B-meson decays requires the precise knowledge of the parton distribution function of the b quark in the B meson, called the shape function. [...]
arXiv:1011.5838.- 2010 - 5 p. - Published in : PoS: ICHEP2010 (2010) , pp. 229
Fulltext: PDF; Preprint: PDF; External link: POS
In : 35th International Conference on High Energy Physics, Paris, France, 22 - 28 Jul 2010, pp.229

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QCD Effects In Weak Decays / Stewart, Iain W
2006
In : 22nd International Symposium on Lepton-Photon Interactions at High Energy, Uppsala, Sweden, 30 Jun - 5 Jul 2005, pp.155

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4th ECFA / DESY Workshop on Physics and Detectors for a 90-GeV to 800-GeV Linear $e^{+}e^{-}$ Collider 1 - 4 Apr 2003 - Amsterdam, The Netherlands / Settles, Ron (ed.); Aguilar-Saavedra, Juan Antonio; Allanach, Benjamin C.; Ananthanarayan, Balasubramanian; Andricek, Ladislav; Anipko, D.; Antonelli, M.; Araujo, H.M.; Asakawa, E.; Ask, S. et al.
Hamburg : DESY, 2004 DESY-PROC-2004-01 .- DESY-04-123G .- DESY-2004-123G

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Renormalization-group improved calculation of top-quark production near threshold / Hoang, A.H. (CERN) ; Manohar, A.V. (UC, San Diego) ; Stewart, Iain W. (UC, San Diego) ; Teubner, T. (Aachen, Tech. Hochsch.)
The top quark cross section close to threshold in $e^+e^-$ annihilation is computed including the summation of logarithms of the velocity at next-to-next-to-leading-logarithmic order in QCD. The remaining theoretical uncertainty in the normalization of the total cross section is at the few percent level, an order of magnitude smaller than in previous next-to-next-to-leading order calculations. [...]
hep-ph/0011254; CERN-TH-2000-340; UCSD-PTH-00-25; PITHA-00-28; CERN-TH-2000-340; UCSD-PTH-2000-25; PITHA-2000-28.- Geneva : CERN, 2001 - 4 p. - Published in : Phys. Rev. Lett. 86 (2001) 1951 APS Published version, local copy: PDF; Access to fulltext document: PDF; Fulltext: PDF; External link: Preprint - Please contact the library if you need to access this document.

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