Speaker
Description
ALERT-SRC experiment, which will be carried out in this summer, employs the ALERT (A Low Energy Recoil Tracker) detector, installed inside the central region of CLAS12 in Hall B, to perform high-precision measurements of short-range correlation (SRC) effects in nuclei. The measurement is carried out with a 6.4 GeV electron beam under quasi-elastic kinematics, focusing on the exclusive ⁴He(e,e′p d)n channel. This study tests the factorization hypothesis for SRC and explores the transition from mean-field momentum to SRC-dominated momentum. Correlations between relative momentum p_rel and center-of-mass momentum p_cm will be analyzed to validate predictions of generalized contact formalism (GCF) models. ALERT consists of drift chambers and a dual-layer scintillator array, enabling efficient tracking and particle identification of low-momentum recoil nucleons. Due to ALERT’s large geometric acceptance and an optimized trigger design, the experiment is expected to achieve nearly two orders of magnitude increase in statistical precision compared to existing outcomes. These results will provide stringent empirical constraints on theoretical SRC models and advance our understanding of nucleon-nucleon correlations in nuclei.
