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19922026
Showing 2015 · hep-phShow all

10 papers · 2 filters

hep-ph2015★ 10 cited

Lepton-flavour violating decays in theories with dimension 6 operators

Giovanni Marco Pruna, Adrian Signer

Despite a large experimental effort, so far no evidence for flavour-violating decays of charged leptons such as and has been found. The absence o…

hep-ph2015★ 64 cited

Associated production of a top pair and a Higgs boson beyond NLO

Alessandro Broggio, Andrea Ferroglia, Ben D. Pecjak +2

We consider soft gluon emission corrections to the production of a top-antitop pair in association with a Higgs boson at hadron colliders. In particular, we present a soft-gluon re…

hep-ph2015

Probing CPT in transitions with entangled neutral kaons

J. Bernabeu, A. Di Domenico, P. Villanueva-Perez

In this paper we present a novel CPT symmetry test in the neutral kaon system based, for the first time, on the direct comparison of the probabilities of a transition and its CPT r…

hep-ph2015★ 35 cited

Higgs Boson Production via Gluon Fusion: Soft-Gluon Resummation including Mass Effects

Timo Schmidt, Michael Spira

We analyze soft and collinear gluon resummation effects at the NLL level for Standard Model Higgs boson production via gluon fusion and the neutral scalar and pseudos…

hep-ph2015★ 26 cited

Testing the Higgs Boson Coupling to Gluons

Urs Langenegger, Michael Spira, Ivo Strebel

We study the possibility to separate in gluon fusion loop-induced Higgs boson production from point-like production. The Higgs boson is reconstructed in the Hgg final state at very…

hep-ph2015★ 40 cited

SCET approach to regularization-scheme dependence of QCD amplitudes

A. Broggio, Ch. Gnendiger, A. Signer +2

We investigate the regularization-scheme dependence of scattering amplitudes in massless QCD and find that the four-dimensional helicity scheme (FDH) and dimensional reduction (DRE…

hep-ph2015★ 102 cited

NLO QCD Corrections to Higgs Pair Production including Dimension-6 Operators

Ramona Grober, Margarete Muhlleitner, Michael Spira +1

New Physics that becomes relevant at some high scale beyond the experimental reach, can be described in the effective theory approach by adding higher-dimensional operators to…

hep-ph2015★ 6 cited

Charged-Higgs production in the Two-Higgs-Doublet Model --- the τνchannel

Lorenzo Basso, Per Osland, Giovanni Marco Pruna

We update the allowed parameter space of the CP-violating 2HDM with Type II Yukawa couplings, that survives the current experimental and theoretical constraints on the model. For a…

hep-ph2015★ 16 cited

Top pair production at a future machine in a composite Higgs scenario

Daniele Barducci, Stefania De Curtis, Stefano Moretti +1

The top quark plays a central role in many New Physics scenarios and in understanding the details of Electro-Weak Symmetry Breaking. In the short- and mid-term future, top-quark st…

hep-ph2015★ 17 cited

Computation of in FDH and DRED: renormalization, operator mixing, and explicit two-loop results

A. Broggio, Ch. Gnendiger, A. Signer +2

The amplitude relevant for Higgs production via gluon fusion is computed in the four-dimensional helicity scheme (FDH) and in dimensional reduction (DRED) at the two-loop…