A bstract A measurement of the inclusive jet production in protonproton collisions at the LHC at $$ \sqrt{s} $$ s = 13 TeV is presented. The doubledifferential cross sections are measured as a function of the jet transverse momentum p T and the absolute jet rapidity y . The anti k T clustering algorithm is used with distance parameter of 0.4 (0.7) in a phase space region with jet p T from 97 GeV up to 3.1 TeV and y < 2 . 0. Data collected with the CMS detector are used, corresponding to an integrated luminosity of 36.3 fb − 1 (33.5 fb − 1 ). The measurement is used in a comprehensive QCD analysis at nexttonexttoleading order, which results in significant improvement in the accuracy of the parton distributions in the proton. Simultaneously, the value of the strong coupling constant at the Z boson mass is extracted as α S ( m Z ) = 0 . 1170 ± 0 . 0019. For the first time, these data are used in a standard model effective field theory analysis at nexttoleading order, where parton distributions and the QCD parameters are extracted simultaneously with imposed constraints on the Wilson coefficient c 1 of 4quark contact interactions.
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This content will become publicly available on July 25, 2024
Revisiting proton–proton fusion in chiral effective field theory
Abstract We calculate the S factor for proton–proton fusion using chiral effective field theory interactions and currents. By performing orderbyorder calculations with a variety of chiral interactions that are regularized and calibrated in different ways, we assess the uncertainty in the S factor from the truncation of the effective field theory expansion and from the sensitivity of the S factor to the shortdistance axial current determined from three and fournucleon observables. We find that S (0) = (4.100 ± 0.024(syst) ± 0.013(stat) ± 0.008( g A )) × 10 −23 MeV fm 2 , where the three uncertainties arise, respectively, from the truncation of the effective field theory expansion, use of the twonucleon axial current fit to fewnucleon observables and variation of the axial coupling constant within the recommended range. The increased value of S (0) compared to previous calculations is mainly driven by an increase in the recommended value for the axial coupling constant and is in agreement with a recent analysis based on pionless effective field theory.
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 NSFPAR ID:
 10436488
 Date Published:
 Journal Name:
 Journal of Physics G: Nuclear and Particle Physics
 Volume:
 50
 Issue:
 9
 ISSN:
 09543899
 Page Range / eLocation ID:
 095102
 Format(s):
 Medium: X
 Sponsoring Org:
 National Science Foundation
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