PaperPanorama

Nuclear Experiment·nucl-ex

Thu·Jul 9, 2026

4 papers—2 primary·2 cross-listed

All4Primary2Cross-lists2
  1. 01

    Measurements of Cross Sections with the CLAS Detector for from 2.0--5.0~GeV and from 1.400--2.125~GeV

    A. Trivedi🇺🇸 · R.W. Gothe🇺🇸 · E. Phelps🇺🇸 · V.I. Mokeev🇺🇸 · D.S. Carman🇺🇸 · P. Achenbach🇺🇸 · J. S. Alvarado🇫🇷 · M.J. Amaryan🇺🇸 · H. Atac🇺🇸 · H. Avakian🇺🇸 · N.A. Baltzell🇺🇸 · L. Barion🇮🇹 and 113 other authors

    Observables in the electroproduction of the reaction channel off the proton that are sensitive to the polarization of the virtual photon are presented for the first time in addition to the extraction of the nine single-differential and fully integrated cross sections within the kinematics area of 2.0~GeV~GeV and 1.400~GeV ~GeV measured with the CLAS detector in Hall B at Jefferson Lab. The extraction of the unpolarized cross sections has been considerably improved in comparison with previously published results from this same dataset, offering finer binning over the five-dimensional hadronic reaction phase space, and including essential advances in the acceptance evaluation by implementing a new technique to stabilize the cross section extraction and minimize the systematic uncertainty associated with the simulation statistics. These improvements are of particular importance for the extraction of the electrocouplings from these data.

    nucl-ex1 citation
  2. 02

    Recent highlights from the STAR Experiment

    Rutik Manikandhan🇺🇸

    Understanding the QCD phase structure and the possible existence of a critical point remains one of the central goals of the heavy-ion program at RHIC. In this proceeding, we present recent STAR results across multiple observables that probe different aspects of the hot and dense matter created in Au+Au collisions. These include two-particle transverse momentum correlations of mean transverse momentum, net-proton cumulants up to fourth order, identical-pion femtoscopy, and baryon-strangeness correlations. We also discuss femtoscopic measurements of baryon-baryon pairs, which provide insight into hyperon-nucleon and hyperon-hyperon interactions and the possible formation of strange dibaryon states. Together, these results provide complementary probes of the system's evolution across a wide collision-energy range (sqrt(sNN) = 3-200 GeV), offering new constraints on the QCD equation of state and the location of the QCD critical point.

    nucl-exhep-exnucl-th0 citations
  3. 03

    Fierz-complete four-quark interactions and the QCD phase diagram

    Zi-ning Wang🇨🇳 · Li-jun Zhou🇨🇳 · Chuang Huang🇩🇪 · Rui Wen🇨🇳 · Shi Yin🇩🇪 · Wei-jie Fu🇨🇳

    The dynamics of Fierz-complete four-quark interactions and its influence on the QCD phase diagram have been investigated within the functional renormalization group approach to QCD at finite temperature and densities. It is found that in the vacuum the pion and sigma channels play the overwhelmingly dominant role, and all the other channels are negligible. However, when it is near the critical end point (CEP), the magnitude of four-quark couplings in other channels increases sizably and they become more and more important. In comparison to the single scalar-pseudoscalar channel of four-quark interactions, the dynamics of Fierz-complete four-quark interactions increases a bit the curvature of the phase boundary, and moves the CEP to location of larger baryon chemical potential and smaller temperature.

    ↳ hep-phnucl-exnucl-th3 citations
  4. 04

    Single inclusive hadron and jet production in lepton-hadron scattering

    Jian-Wei Qiu🇺🇸 · Kazuhiro Watanabe🇯🇵

    We present the first calculation of single inclusive hadron and jet production at large transverse momentum in lepton-hadron scattering in a joint QCD+QED factorization approach. The scattering cross section is factorized into a convolution of infrared-safe hard coefficient functions with universal lepton distribution functions (LDFs) and parton distribution functions (PDFs) of the colliding lepton and hadron, respectively, together with fragmentation functions (FFs) of the observed hadron (or jet). With joint QCD+QED factorization, the DGLAP-type evolution equations for LDFs, PDFs, and FFs necessarily have evolution kernels calculated in both QCD and QED. We derive a default set of LDFs for our calculations and discuss a strategy to extract universal, non-perturbative LDFs from future data. We present our calculations for single inclusive hadron and/or jet production at the energies of Jefferson Lab and the future Electron-Ion Collider.

    ↳ hep-phhep-exnucl-exnucl-th3 citations

Affiliations

first authorsco-authorsvia INSPIRE