Nuclear Theory·nucl-th

Thursday·November 29, 2018

10 papers—7 primary·3 cross-listed

08
Cross Sections for A(e,e')X Reactions
U. Mosel🇩🇪 · K. Gallmeister🇩🇪
Recent JLAB measurements of inclusive (e,A) cross sections as a function of outgoing lepton momentum may provide information on the nucleon spectral function in targets that will be relevant for the planned DUNE neutrino long-baseline experiment. They also provide an important testing ground for neutrino generators. We have therefore used the transport theoretical framework and code GiBUU to calculate the cross sections for the targets C, Ar and Ti. We compare the calculations with the experimental data. The overall agreement is good. Relatively small discrepancies appear mainly on the low-electronenergy side of the QE-peak where QE and 2p2h excitation processes overlap.
↳ nucl-exhep-exhep-phnucl-thPRC(2019)·14 citations
09
Nucleon matrix elements of the antisymmetric quark tensor
Martin Hoferichter🇺🇸 · Bastian Kubis🇩🇪 · Jacobo Ruiz de Elvira🇨🇭 · Peter Stoffer🇺🇸
If physics beyond the Standard Model enters well above the electroweak scale, its low-energy effects are described by Standard Model Effective Field Theory. Already at dimension six many operators involve the antisymmetric quark tensor $q ˉ σ^{μν} q$ , whose matrix elements are difficult to constrain from experiment, Ward identities, or low-energy theorems, in contrast to the corresponding vector and axial-vector or even scalar and pseudoscalar currents. However, with normalizations determined from lattice QCD, analyticity and unitarity often allow one to predict the momentum dependence in a large kinematic range. Starting from recent results in the meson sector, we extend this method to the nucleon case and, in combination with pole dominance, provide a comprehensive assessment of the current status of the nucleon form factors of the quark tensor.
↳ hep-phhep-latnucl-thPRL(2019)·46 citations
10
Thermal effective potential for the Polyakov loop to higher loop order
Hiromichi Nishimura🇺🇸 · Chris Korthals-Altes🇳🇱 · Robert D. Pisarski🇺🇸 · Vladimir Skokov🇺🇸
This is a progress report on the calculation of the effective potential for the Polyakov loop in $S U (N)$ pure gauge theory beyond two-loop order. We introduce a new approach using the Poisson resummation formula to compute sum-integrals with the holonomy. We show partial results for the free energy at order $g^{3}$ and $g^{4}$ .
↳ hep-thhep-lathep-phnucl-thPoS(2019)·4 citations

Affiliations

first authorsco-authorsvia INSPIRE

Cross Sections for A(e,e')X Reactions

Nucleon matrix elements of the antisymmetric quark tensor

Thermal effective potential for the Polyakov loop to higher loop order

Affiliations