Experimental Study of In-medium Spectral Change of Vector Mesons at J-PARC

Kazuo Aoki ,Daichi Arimizu,Sakiko Ashikaga,Kengo Ebata,Hideki Hamagaki,Koki Kanno,Yuta Kimura,H En’yo ,W Y Chang ,K Shigaki ,H Murakami ,K Shirotori ,T Sakaguchi ,Ryumon Honda ,M Ichikawa ,F Sakuma ,T Nonaka ,T Chujo ,M Naruki ,H Noumi ,Shinya Kajikawa ,Chao‐Wen Lin ,M Sekimoto ,Kazuya Yamaguchi ,A Kiyomichi ,K Ozawa ,S Sawada ,H Sako ,Takehito Kondo ,Y Morino ,Tomoki Murakami ,S Esumi ,T Takahashi ,Shono Kyan,Chih-Hsun Lin,Ryotaro Muto,Shunnosuke Nagafusa,Wataru Nakai,Satomi Nakasuga,Shuta Ochiai,Susumu Sato,Hitoshi Sugimura,Yudai Takaura,Ryohei Tatsumi,Kosuke Tsukui,Po-Hung Wang,Kanta Yahiro,S Yokkaichi

doi:10.1007/s00601-023-01828-7

Experimental Study of In-medium Spectral Change of Vector Mesons at J-PARC

Kazuo Aoki , Daichi Arimizu + Show 46 more

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https://doi.org/10.1007/s00601-023-01828-7

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Journal: Few-Body Systems	Publication Date: Jul 11, 2023
Citations: 2	License type: CC BY 4.0

Affiliation: RIKEN Nishina Center, Institute of Physics, Academia Sinica, Kyoto University, Hiroshima University, The University of Tokyo, Tokyo University of Science, Osaka University, High Energy Accelerator Research Organization, Brookhaven National Laboratory, Japan Atomic Energy Agency, Advanced Science Research Center, University of Tsukuba, Nagasaki Institute of Applied Science, Tohoku University, Japan Synchrotron Radiation Research Institute, Bunkyo University

#Primary Proton Beam #Spontaneous Breaking + Show 8 more

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Abstract

Chiral symmetry and its spontaneous breaking is an essential property of the QCD vacuum and is closely related to the generation of hadron mass. J-PARC E16 experiment measures dielectron spectra in p+A collisions at 30 GeV to study the in-medium spectral change of vector mesons that signals the partial restoration of the broken symmetry. The experiment uses the primary proton beam available at the high-momentum beam line of the J-PARC hadron experimental facility. We performed three proton-beam runs intended for beamline and detector commissioning. We are preparing for the next commissioning run in 2023 and the first physics run. We present the experimental setup, some of the expected results, preparation status, and some findings in the commissioning runs.

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