10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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22 papers · 2 filters
Tauonic B decays in 2HDMs and the MSSM in the decoupling limit
Andreas Crivellin
In these proceedings we review two aspects of 2HDMs with generic Yukawa structures. The first part considers how recent deviations from the SM expectations in tauonic B decays (obs…
Higgs-Boson Production at Small Transverse Momentum
Thomas Becher, Matthias Neubert, Daniel Wilhelm
Using methods from effective field theory, we have recently developed a novel, systematic framework for the calculation of the cross sections for electroweak gauge-boson production…
Lattice study of an electroweak phase transition at m_h ~ 126 GeV
M. Laine, G. Nardini, K. Rummukainen
We carry out lattice simulations of a cosmological electroweak phase transition for a Higgs mass m_h ~ 126 GeV. The analysis is based on a dimensionally reduced effective theory fo…
Roy-Steiner equations for pi N scattering
Christoph Ditsche, Martin Hoferichter, Bastian Kubis +1
Starting from hyperbolic dispersion relations for the invariant amplitudes of pion-nucleon scattering together with crossing symmetry and unitarity, one can derive a closed system…
Sommerfeld effect in heavy quark chemical equilibration
D. Bodeker, M. Laine
The chemical equilibration of heavy quarks in a quark-gluon plasma proceeds via annihilation or pair creation. For temperatures T much below the heavy quark mass M, when kineticall…
Two-loop SQCD corrections to Higgs-quark-quark couplings in the generic MSSM
Andreas Crivellin, Christoph Greub
In this article we compute the two-loop SQCD corrections to Higgs-quark-quark couplings in the generic MSSM generated by diagrams involving squarks and gluinos. We give analytic re…
Extracting the chiral anomaly from gamma pi --> pi pi
Martin Hoferichter, Bastian Kubis, Dimitrios Sakkas
We derive dispersive representations for the anomalous process gamma pi --> pi pi with the pi pi P-wave phase shift as input. We investigate how in this framework the chiral anomal…
Massive vector current correlator in thermal QCD
Y. Burnier, M. Laine
We present an NLO analysis of the massive vector current correlator at temperatures above a few hundred MeV. The physics of this correlator originates from a transport peak, relate…
NNLL Resummation for Jet Broadening
Thomas Becher, Guido Bell
The resummation for the event-shape variable jet broadening is extended to next-to-next-to-leading logarithmic accuracy by computing the relevant jet and soft functions at one-loop…
Massive Boson Production at Small q_T in Soft-Collinear Effective Theory
Thomas Becher, Matthias Neubert, Daniel Wilhelm
We study the differential cross sections for electroweak gauge-boson and Higgs production at small and very small transverse-momentum q_T. Large logarithms are resummed using soft-…
A Dispersive Treatment of Decays
Gilberto Colangelo, Emilie Passemar, Peter Stoffer
are for several reasons an especially interesting decay channel of mesons: decays allow an accurate measurement of a combination of -wave scatte…
Disentangling the timescales behind the non-perturbative heavy quark potential
Yannis Burnier, Alexander Rothkopf
The static part of the heavy quark potential has been shown to be closely related to the spectrum of the rectangular Wilson loop. In particular the lowest lying positive frequency…
A non-perturbative contribution to jet quenching
M. Laine
It has been argued by Caron-Huot that infrared contributions to the jet quenching parameter in hot QCD, denoted by qhat, can be extracted from an analysis of a certain static-poten…
On the factorization of chiral logarithms in the pion form factors
Gilberto Colangelo, Massimiliano Procura, Lorena Rothen +2
The recently proposed hard-pion chiral perturbation theory predicts that the leading chiral logarithms factorize with respect to the energy dependence in the chiral limit. This cla…
Fragmentation with a Cut on Thrust: Predictions for B-factories
Ambar Jain, Massimiliano Procura, Brian Shotwell +1
When high-energy single-hadron production takes place inside an identified jet, there are important correlations between the fragmentation and phase-space cuts. For example, when o…
Precision direct photon and W-boson spectra at high p_T and comparison to LHC data
Thomas Becher, Christian Lorentzen, Matthew D. Schwartz
The differential p_T spectrum for vector boson production is computed at next-to-leading fixed order and including the resummation of threshold logarithms at next-to-next-to-leadin…
Explaining B->Dτν, B->D*τνand B->τνin a 2HDM of type III
Andreas Crivellin, Christoph Greub, Ahmet Kokulu
Recently, the BaBar collaboration reported first evidence for new physics in B->Dτνand B->D*τν. Combining both processes the significance is 3.4σ. This result cannot be explained i…
Determination of alpha_s from the QCD static energy
Alexei Bazavov, Nora Brambilla, Xavier Garcia i Tormo +3
We compare lattice data for the short-distance part of the static energy in 2+1 flavor quantum chromodynamics (QCD) with perturbative calculations, up to next-to-next-to-next-to le…
Heavy quark chemical equilibration rate as a transport coefficient
D. Bodeker, M. Laine
Motivated by indications that heavy (charm and bottom) quarks interact strongly at temperatures generated in heavy ion collision experiments, we suggest a non-perturbative definiti…
Factorization and NNLL Resummation for Higgs Production with a Jet Veto
Thomas Becher, Matthias Neubert
Using methods of effective field theory, we derive the first all-order factorization theorem for the Higgs-boson production cross section with a jet veto, imposed by means of a sta…
SUSY_FLAVOR v2.5: a computational tool for FCNC and CP-violating processes in the MSSM
A. Crivellin, J. Rosiek, P. H. Chankowski +3
We present SUSY_FLAVOR version 2.5 - a Fortran 77 program that calculates low-energy flavor observables in the general -parity conserving MSSM. For a set of MSSM parameters as i…
NNLO soft function for electroweak boson production at large transverse momentum
Thomas Becher, Guido Bell, Stefanie Marti
The soft function relevant for the production of an electroweak boson (photon, W, Z or H) with large transverse momentum at a hadron collider is computed at next-to-next-to-leading…