The New Muon g-2 Experiment: Giving An Old Experiment A New Spin

The next PSE Open Mic presentation will be on Thursday, Dec. 3, 2015, at 3:30 p.m. in Bldg. 241, Conf. Rm. D-172.

Assistant Physicist and DOE Early Career Award recipient, Peter Winter will present "The New Muon g-2 Experiment: Giving An Old Experiment A New Spin."

Coherent Charged Pion Production at MINERvA

This seminar has been rescheduled for Monday, Nov. 23, 11 a.m., Bldg. 362, Rm. F108.

Neutrino-induced coherent charged pion production on nuclei is a rare, inelastic interaction that produces a charged lepton and pion in the forward direction while leaving the nucleus intact. Understanding this process at few GeV neutrino energy is important for precision measurements of neutrino oscillation parameters.

Advances in Coupled‐cluster Computations of Nuclei

In this talk I will present recent highlights in ab initio computations of nuclei using coupled‐cluster theory with interactions and currents from chiral effective field theory. The topics I will discuss include: (i) accurate nuclear binding energies and radii of light and medium mass nuclei from a chiral interaction, (ii) the neutral- and weak-charge distributions and electric dipole polarizability of 48Ca, quantities that are currently targeted by precision measurements worldwide, and (iii) the microscopic origins of the quenching of the axial vector coupling GA.

Covariant Derivative Expansion: Generic Calculation of SM EFT Wilson Coefficient at One Loop Level

In this talk I will show a novel calculation tool based on the covariant derivative expansions of the Coleman-Weinberg potential, which can match an arbitrary UV theory to the pure bosonic SM operator set. This method has advantage of getting all the operators simultaneously, being universal for specific models, and always giving analytical results. The matching has been generalized to fermionic models, and nondegenerated large scales.

Now Pentaquarks, What Next

With the discovery of a charmed pentaquark, the LHCb Collaboration has shown that a new configuration of four quarks plus one antiquark can exist as a short-lived particle. But not any combination of quarks will do this, as this case containing both a charm and an anticharm quark is the only pentaquark yet known.

New Developments for Scattering Amplitudes

In this talk I will discuss two branches of scattering amplitudes which have seen major developments in recent years. Firstly I will elaborate on Integrand Reduction techniques for multi-loop integrals and how they can be applied to the Color-Kinematic duality and secondly how these integrals can be computed by the method of differential equations, which recently has been stimulated by new ideas. I will conclude each part by a series of examples where these techniques have been applied.

Interpreting Cosmic Ray Signals Energy-peak Way

It has been shown that the energy distribution of the massless decay product from the 2-body decay of a scalar or unpolarized mother particle has a peak, whose location is identical to the fixed energy of that particle in the rest frame of the corresponding mother particle although its underlying boost distribution is unknown.