Momentum-space resummation for transverse observables and the Higgs p⊥ at N3LL+NNLO
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2018)108
Abstract: A bstractWe present an approach to the momentum-space resummation of global, recursively infrared and collinear safe observables that can vanish away from the Sudakov region. We focus on the hadro-production of a generic colour singlet,… read more here.
Keywords: transverse; next next; momentum space; momentum ... See more keywords
Four-particle scattering amplitudes in QCD at NNLO to higher orders in the dimensional regulator
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep12(2019)177
Abstract: Abstract We compute all helicity amplitudes for four particle scattering in massless QCD with n f fermion flavours to next-to-next-to-leading order (NNLO) in perturbation theory. In particular, we consider all possible configurations of external quarks… read more here.
Keywords: particle scattering; next next; dimensional regulator; four particle ... See more keywords
Matching coefficients in nonrelativistic QCD to two-loop accuracy
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.054016
Abstract: We consider the Lagrange density of non-relativistic Quantum Chromodynamics expanded up to order $1/m^2$, where $m$ is the heavy quark mass, and compute several matching coefficients up to two-loop order. Our results are building blocks… read more here.
Keywords: coefficients nonrelativistic; qcd two; matching coefficients; next next ... See more keywords
Heavy neutrinos from gluon fusion.
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.96.055042
Abstract: Heavy neutrinos, a key prediction of many standard model extensions, remain some of the most searched-for objects at collider experiments. In this context, we revisit the premise that the gluon fusion production mechanism, $gg \to… read more here.
Keywords: heavy neutrinos; next next; neutrinos gluon; gluon fusion ... See more keywords
Next-to-Next-to-Next-to-Leading Order Pressure of Cold Quark Matter: Leading Logarithm.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.121.202701
Abstract: At high baryon chemical potential μ_{B}, the equation of state of QCD allows a weak-coupling expansion in the QCD coupling α_{s}. The result is currently known up to and including the full next-to-next-to-leading order α_{s}^{2}.… read more here.
Keywords: order; next leading; next next; leading logarithm ... See more keywords
Erratum: Direct Photon Production at Next-to-Next-to-Leading Order [Phys. Rev. Lett. 118, 222001 (2017)].
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.124.259901
Abstract: This corrects the article DOI: 10.1103/PhysRevLett.118.222001. read more here.
Keywords: 118 222001; next next; direct photon; production next ... See more keywords
Width Difference in the B-B[over ¯] System at Next-to-Next-to-Leading Order of QCD.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.102001
Abstract: We extend the theoretical prediction for the width difference ΔΓ_{q} in the mixing of neutral B mesons in the Standard Model to next-to-next-to-leading order in α_{s}. To this aim, we calculate three-loop diagrams with two… read more here.
Keywords: leading order; next next; width difference; next leading ... See more keywords