Heavy-quark production in deep-inelastic scattering probes the gluon distribution, and the precision of current and future data requires predictions beyond next-to-leading order. We calculate the even Mellin moments $N = 2$ to $22$ of the next-to-leading-order heavy-quark coefficient functions for $F_2$ and $F_L$, retaining the full heavy-quark mass dependence. This includes the gluon channel, for which no analytic result is available. They provide a test of the parametrisations used in phenomenology: at a representative kinematic point these are accurate to better than one per cent in the gluon channel, whereas in the quark channels we find deviations of up to $20\%$ over a wide range of Mellin moments, signalling significant differences in the corresponding $x$-space distributions. As a new result at next-to-next-to-leading order, the lowest moment $N = 2$ has been determined exactly.
Heavy-quarkonium hadroproduction at the LHC can access kinematic configurations in which the partonic center-of-mass energy is much larger than the quarkonium mass and transverse momentum. Fixed-order predictions may become unstable in this regime because large logarithms of the collision energy are not resummed. Exten...
M. Fucilla, J. Lansberg, M. Nefedov et al.· 0 citations
We present a complete analytic calculation of the next-to-leading-order (NLO) QCD cross sections for the production of an electroweak vector boson ($W^\pm$, $Z/\gamma^*$) at finite transverse momentum, decomposed into the full set of helicity cross sections that determine the angular coefficients $A_0$-$A_7$ of the lep...
S. Camarda, L. Cieri, Giancarlo Ferrera et al.· 0 citations
The strange quark and antiquark contents of the proton remain weakly constrained compared to the other light quarks, particularly the asymmetry between the two. Production of a $W^\mp$ boson in association with a charmed meson $D^{(*)\pm}$ could provide additional constraints in future fits of parton distribution funct...
Ville Alanko, I. Helenius, H. Paukkunen· 0 citations
We investigate the high-energy behavior of observables sensitive to the production of a Higgs boson in association with a singly charmed hadron at the $\sqrt{s}=14$ TeV LHC, with light-flavored hadrons considered for comparison. Our reference formalism is the hybrid factorization at NLL/NLO$^+$, where the standard coll...
We determine the universal singular structure of rapidity distributions for color-singlet production in hadron collisions through next-to-next-to-next-to-leading order (N3LO) in QCD. Our result captures the full singular contributions as either partonic momentum fraction approaches one, including the delta-function ter...
Federica Devoto, B. Mistlberger, Gherardo Vita· 0 citations
We present NLO QCD predictions for the $pp\to t\bar{t}t\bar{t}+X$ process in the 4 lepton decay channel at the integrated and differential level for the LHC centre-of-mass energy of $\sqrt{s}=13.6$~TeV. Specifically, we compare the fixed order NLO QCD calculations to the parton-shower matched results obtained with \tex...
Manal Al Sairafi· 0 citations
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