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23 papers · 2 filters
Gluon fragmentation into quarkonium at next-to-leading order
Pierre Artoisenet, Eric Braaten
We present the first calculation at next-to-leading order (NLO) in of a fragmentation function into quarkonium whose form at leading order is a nontrivial function of , na…
A global approach to top-quark flavor-changing interactions
Gauthier Durieux, Fabio Maltoni, Cen Zhang
We adopt a fully gauge-invariant effective-field-theory approach for parametrizing top-quark flavor-changing-neutral-current interactions. It allows for a global interpretation of…
Automatic computations at next-to-leading order in QCD for top-quark flavor-changing neutral processes
Celine Degrande, Fabio Maltoni, Jian Wang +1
Computations at next-to-leading order in the Standard Model offer new technical challenges in presence of higher dimensional operators. We introduce a framework that, starting from…
Effective approach to top-quark decay and FCNC processes at NLO accuracy
Cen Zhang
The top quark is expected to be a probe to new physics beyond the standard model. Thanks to the large number of top quarks produced at the Tevatron and the LHC, various properties…
Two-loop splitting amplitudes and the single-real contribution to inclusive Higgs production at N3LO
Claude Duhr, Thomas Gehrmann, Matthieu Jaquier
The factorisation of QCD matrix elements in the limit of two external partons becoming collinear is described by process-independent splitting amplitudes, which can be expanded sys…
Higgs production in association with bottom quarks
M. Wiesemann, R. Frederix, S. Frixione +3
We study the production of a Higgs boson in association with bottom quarks in hadronic collisions, and present phenomenological predictions relevant to the 13 TeV LHC. Our results…