495 citations · 1.9k across the 34 of their papers we have counts for
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MaRTIn -- Manual for the "Massive Recursive Tensor Integration"
Joachim Brod, Lorenz Hüdepohl, Emmanuel Stamou +1
We present MaRTIn, an extendable all-in-one package for calculating amplitudes up to two loops in an expansion in external momenta or using the method of infrared rearrangement. Re…
A Precise Electron EDM Constraint on CP-odd Heavy-Quark Yukawas
Joachim Brod, Zachary Polonsky, Emmanuel Stamou
CP-odd Higgs couplings to bottom and charm quarks arise in many extensions of the standard model and are of potential interest for electroweak baryogenesis. These couplings induce…
Leveraging on-shell interference to search for FCNCs of the top quark and the Z boson
Lucas Cremer, Johannes Erdmann, Roni Harnik +2
Flavour-changing-neutral currents (FCNCs) involving the top quark are highly suppressed within the Standard Model (SM). Hence, any signal in current or planned future collider expe…
Impact of indirect CP violation on Br
Joachim Brod, Emmanuel Stamou
The decay , with the final muon pair in an angular-momentum zero state, is a sensitive probe of short-distance physics. It has recently been shown how to…
Global Constraints on Yukawa Operators in the Standard Model Effective Theory
Joachim Brod, Jonathan M. Cornell, Dimitrios Skodras +1
CP-violating contributions to Higgs--fermion couplings are absent in the standard model of particle physics (SM), but are motivated by models of electroweak baryogenesis. Here, we…
New Physics Searches at Kaon and Hyperon Factories
Evgueni Goudzovski, Diego Redigolo, Kohsaku Tobioka +61
Rare meson decays are among the most sensitive probes of both heavy and light new physics. Among them, new physics searches using kaons benefit from their small total decay widths…
Updated Standard Model Prediction for and
Joachim Brod, Martin Gorbahn, Emmanuel Stamou
The rare decay modes and the parameter that measures CP violation in Kaon mixing are sensitive probes of physics beyond the standard model. In this article we…
Self-interacting neutrinos: solution to Hubble tension versus experimental constraints
Kun-Feng Lyu, Emmanuel Stamou, Lian-Tao Wang
Exotic self-interactions among the Standard-Model neutrinos have been proposed as a potential reason behind the tension in the expansion rate, H0, of the universe inferred from dif…
Standard-model prediction of with manifest CKM unitarity
Joachim Brod, Martin Gorbahn, Emmanuel Stamou
The parameter describes CP violation in the neutral kaon system and is one of the most sensitive probes of new physics. The large uncertainties related to the charm-quark con…
Probing flavoured Axions in the Tail of
Johannes Albrecht, Emmanuel Stamou, Robert Ziegler +1
We discuss how LHC di-muon data collected to study can be used to constrain light particles with flavour-violating couplings to -quarks. Focussing on the case of a…
Electric dipole moment constraints on CP-violating heavy-quark Yukawas at next-to-leading order
Joachim Brod, Emmanuel Stamou
Electric dipole moments are sensitive probes of new phases in the Higgs Yukawa couplings. We calculate the complete two-loop QCD anomalous dimension matrix for the mixing of CP-odd…
Weak mixing below the weak scale in dark-matter direct detection
Joachim Brod, Benjamin Grinstein, Emmanuel Stamou +1
If dark matter couples predominantly to the axial-vector currents with heavy quarks, the leading contribution to dark-matter scattering on nuclei is either due to one-loop weak cor…
Light Resonances and the Low- Bin of
Wolfgang Altmannshofer, Michael J. Baker, Stefania Gori +4
LHCb has reported hints of lepton-flavor universality violation in the rare decays , both in high- and low- bins. Although the high- hint may…
Interpreting a 750 GeV Diphoton Resonance
Rick S. Gupta, Sebastian Jäger, Yevgeny Kats +2
We discuss the implications of the significant excesses in the diphoton final state observed by the LHC experiments ATLAS and CMS around a diphoton invariant mass of 750 GeV. The i…
Large BR(h->tau mu) in the MSSM?
Daniel Aloni, Yosef Nir, Emmanuel Stamou
We study how large the rate of the lepton-flavor violating Higgs decay h->tau mu can be in the (R-parity conserving) MSSM. We make no assumptions, such as universality or alignment…
Dark Matter and Gauged Flavor Symmetries
Fady Bishara, Admir Greljo, Jernej F. Kamenik +2
We investigate the phenomenology of flavored dark matter (DM). DM stability is guaranteed by an accidental symmetry, a subgroup of the standard model (SM) flavor g…
Prospects for measuring the Higgs coupling to light quarks
Gilad Perez, Yotam Soreq, Emmanuel Stamou +1
We discuss the prospects to probe the light-quark Yukawa couplings to the Higgs boson. The Higgs coupling to the charm quark can be probed both via inclusive and exclusive approach…
Heavy baryons as polarimeters at colliders
Mario Galanti, Andrea Giammanco, Yuval Grossman +3
In new-physics processes that produce b or c jets, a measurement of the initial b or c-quark polarization could provide crucial information about the structure of the new physics.…
Constraining the Charm Yukawa and Higgs-quark Coupling Universality
Gilad Perez, Yotam Soreq, Emmanuel Stamou +1
We introduce four different types of data-driven analyses with different level of robustness that constrain the size of the Higgs-charm Yukawa coupling: (i) recasting the vector-bo…
Probing anomalous interactions with rare meson decays
Joachim Brod, Admir Greljo, Emmanuel Stamou +1
Anomalous couplings of the boson to top quarks are only marginally constrained by direct searches and are still sensitive to new particle dynamics at the TeV scale. Employing a…
Stealth QCD-like Strong Interactions and the t-tbar Asymmetry
Joachim Brod, Jure Drobnak, Alexander L. Kagan +2
We show that a new strongly interacting sector can produce large enhancements of the t-tbar asymmetries at the Tevatron. The Standard Model is extended by a new vector-like flavor…
Electroweak Corrections to
Christoph Bobeth, Martin Gorbahn, Emmanuel Stamou
We calculate the full two-loop electroweak matching corrections to the operator governing the decay B_q --> l^+ l^- in the Standard Model. Their inclusion removes an electroweak sc…
B_{s,d} -> l+ l- in the Standard Model with Reduced Theoretical Uncertainty
Christoph Bobeth, Martin Gorbahn, Thomas Hermann +3
We combine our new results for the O(alpha_em) and O(alpha_s^2) corrections to B_{s,d} -> l^+ l^-, and present updated branching ratio predictions for these decays in the standard…
Discrete Flavour Groups, θ_13 and Lepton Flavour Violation
Guido Altarelli, Ferruccio Feruglio, Luca Merlo +1
Discrete flavour groups have been studied in connection with special patterns of neutrino mixing suggested by the data, such as Tri-Bimaximal mixing (groups A4, S4...) or Bi-Maxima…