154 citations · 841 across the 20 of their papers we have counts for
19 papers · 1 filter
Continuity and Semileptonic Form Factors
Andrew Kobach
Small changes in the masses of massive external scattering states should correspond to small changes in the non-perturbative parameterization of form factors in quantum field theor…
Baryon Number, Lepton Number, and Operator Dimension in the SMEFT with Flavor Symmetries
Andreas Helset, Andrew Kobach
For a large set of flavor symmetries, the lowest-dimensional baryon- or lepton-number violating operators in the Standard Model effective field theory (SMEFT) with flavor symmetry…
Reparameterization Invariant Operator Basis for NRQED and HQET
Andrew Kobach, Sridip Pal
We discuss how reparameterization invariance connects a rotationally-invariant heavy particle effective theory with a single fermion to a Lorentz-invariant theory. Using Hilbert-se…
Conformal Structure of the Heavy Particle EFT Operator Basis
Andrew Kobach, Sridip Pal
An operator basis of an effective theory with a heavy particle, subject to external gauge fields, is spanned by a particular kind of neutral scalar primary of the nonrelativistic c…
Neutrino Oscillation Measurements Computed in Quantum Field Theory
Andrew Kobach, Aneesh V. Manohar, John McGreevy
We perform a calculation in quantum field theory of neutrino oscillation probabilities, where we include simultaneously the source, detector, and neutrino fields in the Hamiltonian…
Hilbert Series and Operator Basis for NRQED and NRQCD/HQET
Andrew Kobach, Sridip Pal
We use a Hilbert series to construct an operator basis in the expansion of a theory with a nonrelativistic heavy fermion in an electromagnetic (NRQED) or color gauge field (N…
Model-Independent Extraction of from
Benjamin Grinstein, Andrew Kobach
We fit the unfolded data of from the Belle experiment, where , using a method independent of heavy quark symmetry to…
On Lepton-Number-Violating Searches for Muon to Positron Conversion
Jeffrey M. Berryman, André de Gouvêa, Kevin J. Kelly +1
There is no guarantee that the violation of lepton number, assuming it exists, will primarily manifest itself in neutrinoless double beta decay (). Lepton-number violation an…
Baryon Number, Lepton Number, and Operator Dimension in the Standard Model
Andrew Kobach
We prove that for a given operator in the Standard Model (SM) with baryon number B and lepton number L, that the operator's dimension is even (odd) if (B-L)/2 is even (odd). Conseq…
Gravitational Effects on Measurements of the Muon Dipole Moments
Andrew Kobach
If the technology for muon storage rings one day permits sensitivity to precession at the order of Hz, the local gravitational field of Earth can be a dominant contributi…
New physics in the kinematic distributions of
Rodrigo Alonso, Andrew Kobach, Jorge Martin Camalich
We investigate the experimentally-accessible kinematic distributions of the decays. Specifically, we study the decay rates as…
Global Constraints on a Heavy Neutrino
André de Gouvêa, Andrew Kobach
We estimate constraints on the existence of a heavy, mostly sterile neutrino with mass between 10 eV and 1 TeV. We improve upon previous analyses by performing a global combination…
A Sterile Neutrino at DUNE
Jeffrey M. Berryman, Andre de Gouvea, Kevin J. Kelly +1
We investigate the potential for the Deep Underground Neutrino Experiment (DUNE) to probe the existence and effects of a fourth neutrino mass-eigenstate. We study the mixing of the…
Heavy Neutrinos and the Kinematics of Tau Decays
Andrew Kobach, Sean Dobbs
Searches for heavy neutrinos often rely on the possibility that the heavy neutrinos will decay to detectable particles. Interpreting the results of such searches requires a particu…
CP-Invariance Violation at Short-Baseline Experiments in 3+1 Neutrino Scenarios
André de Gouvêa, Kevin J. Kelly, Andrew Kobach
New neutrino degrees of freedom allow for more sources of CP-invariance violation (CPV). We explore the requirements for accessing CP-odd mixing parameters in the so-called 3+1 sce…
Lepton-Flavored Dark Matter
Jennifer Kile, Andrew Kobach, Amarjit Soni
In this work, we address two paradoxes. The first is that the measured dark-matter relic density can be satisfied with new physics at O(100 GeV - 1 TeV), while the null results fro…
Neutrino Masses, Grand Unification, and Baryon Number Violation
Andre de Gouvea, Juan Herrero-Garcia, Andrew Kobach
If grand unification is real, searches for baryon-number violation should be included on the list of observables that may reveal information regarding the origin of neutrino masses…
Measuring the Mass of Dark Matter at the LHC
Andrew C. Kobach
Many methods have been developed for measuring the mass of invisible particles that only use kinematic information available at hadron colliders. Because a particle is identified b…
The Lightest Massive Invisible Particles at the LHC
Andre de Gouvea, Andrew C. Kobach
The observation of new physics events with large missing transverse energy at the LHC would potentially serve as evidence for the direct production of dark matter. A crucial step t…