scholarly journals Determination of the strong coupling constant $\alpha_s (m_Z )$ in next-to-next-to-leading order QCD using H1 jet cross section measurements

2019 ◽  
Author(s):  
Daniel Britzger ◽  
Keyword(s):  
Strong Coupling ◽  
Cross Section ◽  
Strong Coupling Constant ◽  
Leading Order ◽  
Coupling Constant

scholarly journals Erratum to: Determination of the strong coupling constant $${{\varvec{\alpha _{\mathrm{s}} (m_{\mathrm{Z}})}}}$$ in next-to-next-to-leading order QCD using H1 jet cross section measurements

2021 ◽  
Vol 81 (8) ◽  
Author(s):  
◽  
V. Andreev ◽  
A. Baghdasaryan ◽  
K. Begzsuren ◽  
A. Belousov ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Cross Section ◽  
Distribution Functions ◽  
Strong Coupling Constant ◽  
Leading Order ◽  
Coupling Constant ◽  
Parton Distribution Functions ◽  
Section Data ◽  
Dijet Data

AbstractThe determination of the strong coupling constant $$\alpha _{\mathrm{s}} (m_{\mathrm{Z}})$$ α s ( m Z ) from H1 inclusive and dijet cross section data [1] exploits perturbative QCD predictions in next-to-next-to-leading order (NNLO) [2–4]. An implementation error in the NNLO predictions was found [4] which changes the numerical values of the predictions and the resulting values of the fits. Using the corrected NNLO predictions together with inclusive jet and dijet data, the strong coupling constant is determined to be $$\alpha _{\mathrm{s}} (m_{\mathrm{Z}}) =0.1166\,(19)_{\mathrm{exp}}\,(24)_{\mathrm{th}}$$ α s ( m Z ) = 0.1166 ( 19 ) exp ( 24 ) th . Complementarily, $$\alpha _{\mathrm{s}} (m_{\mathrm{Z}})$$ α s ( m Z ) is determined together with parton distribution functions of the proton (PDFs) from jet and inclusive DIS data measured by the H1 experiment. The value $$\alpha _{\mathrm{s}} (m_{\mathrm{Z}}) =0.1147\,(25)_{\mathrm{tot}}$$ α s ( m Z ) = 0.1147 ( 25 ) tot obtained is consistent with the determination from jet data alone. Corrected figures and numerical results are provided and the discussion is adapted accordingly.

scholarly journals Precise determination of αS( $ m_{Z^0 } $ ) from a global fit of energy-energy correlations to NNLO+NNLL predictions

2019 ◽  
Vol 206 ◽  
pp. 05002
Author(s):  
A. Kardos ◽  
S. Kluth ◽  
G. Somogyi ◽  
Z. Tulipánt ◽  
A. Verbytskyi
Keyword(s):  
Strong Coupling ◽  
Precise Determination ◽  
Strong Coupling Constant ◽  
Final States ◽  
Leading Order ◽  
Coupling Constant ◽  
Global Fit ◽  
Hadronic Final States

We present a determination of the strong coupling constant αS( $ m_{Z^0 } $ ) using a global fit of theory predictions in next-to-next-next-leading-order (NNLO) combined with resummed predictions at the next-to-next-leading-log level (NNLL) [bibrR11]. The predictions are compared to distributions of energy-energy correlations measured in e+e−annihilation to hadronic final states by experiments at the e+e−colliders LEP, PETRA, TRISTAN and PEP. The predictions are corrected for hadronisation effects using the modern generator programs Sherpa 2.2.4 and Herwig 7.1.1.

scholarly journals Determination of the top-quark pole mass and strong coupling constant from the tt¯ production cross section in pp collisions at s=7 TeV

2014 ◽  
Vol 728 ◽  
pp. 496-517 ◽  
Author(s):  
S. Chatrchyan ◽  
V. Khachatryan ◽  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Cross Section ◽  
Top Quark ◽  
Production Cross Section ◽  
Production Cross ◽  
Strong Coupling Constant ◽  
Pole Mass ◽  
Coupling Constant ◽  
Pp Collisions
Sign in / Sign up

Export Citation Format

Share Document