A brief overview of strangeness physics with the CLAS detector at JLab is given, mainly covering the domain of nucleon resonances. Several excited states predicted by the symmetric constituent quark model may have significant couplings to the K-Lambda or K-Sigma channels. I will discuss data that are relevant in the search for such states in the strangeness channel, and give an outlook on the future prospects of the N* program at JLab with electromagnetic probes.
The KL2016 Workshop is following the Letter of Intent LoI12-15-001 "Physics Opportunities with Secondary KL beam at JLab" submitted to PAC43 with the main focus on the physics of excited hyperons produced by the Kaon beam on unpolarized and polarized targets with GlueX setup in Hall D. Such studies will broaden a physics program of hadron spectroscopy extending it to the strange sector. The Workshop was organized to get a feedback from the community to strengthen physics motivation of the LoI and prepare a full proposal. Further details about the Workshop can be found on the web page of the co…
Following a Letter of Intent submitted to PAC43 at JLab in this talk we discuss the possibility to create a secondary K0_L beam in Hall-D to be used with GlueX detector for spectroscopy of excited hyperons.
The program of parity violation with the proposed new SoLID spectrometer at JLab is presented. Physics topics include searched for physics beyond the Standard Model, studies of charge symmetry violation at the quark level, searched for quark-quark correlations, and a measurement of the ratio of up and down PDF's in the proton.
Dense compact objects like neutron stars or black holes have always been one of Gerry Brown's favorite research topics. This is closely related to the effects of strangeness in nuclear physics. Here, we review the chiral Effective Field Theory approach to interactions involving nucleons and hyperons, the possible existence of strange dibaryons, the fate of hyperons in nuclear matter and the present status of three-body forces involving hyperons and nucleons.
Several persistent problems in strangeness nuclear physics are discussed in this opening talk at HYP2018, Portsmouth-Norfolk VA, June 2018: (i) the $^3_Λ$H and $^3_Λ$n (if existing) lifetimes; (ii) charge symmetry breaking in $Λ$ hypernuclei; (iii) the overbinding of $^5_Λ$He which might be related to the hyperon puzzle in neutron stars; and (iv) does $Λ^\ast$(1405) survive in strange hadronic matter?
Extensions of nuclear physics to the strange sector are reviewed, covering data and models of Lambda and other hypernuclei, multi-strange matter, and anti-kaon bound states and condensation. Past achievements are highlighted, present unresolved problems discussed, and future directions outlined.
The DAΦNE collider at INFN-LNF is a unique source of low-energy kaons, which was used by the DEAR, SIDDHARTA and AMADEUS collaborations for unique measurements of kaonic atoms and kaon-nuclei interactions. Presently, the SIDDHARTA-2 collaboration is underway to measure the kaonic deuterium exotic atom. With this document we outline a proposal for fundamental physics at the strangeness frontier for future measurements of kaonic atoms and kaon-nuclei interactions at DAΦNE, which is intended to stimulate discussions within the broad scientific community performing research directly or indirectly …
Stored antiprotons beams in the GeV range represent a unparalleled factory for hyperon-antihyperon pairs. Their outstanding large production probability in antiproton collisions will open the floodgates for a series of new studies of strange hadronic systems with unprecedented precision. The behavior of hyperons and -- for the first time -- of antihyperons in nuclear systems can be studied under well controlled conditions. The exclusive production of $Λ\barΛ$ and $Σ^-\barΛ$ pairs in antiproton-nucleus interactions probe the neutron and proton distribution in the nuclear periphery and will help…
High Precision Fundamental Physics Experiments at JLab with Spin-transparent Storage Rings of Low-energy Polarized Electron Beams
Thomas Jefferson National Accelerator Facility（托马斯·杰斐逊国家加速器设施）；Mississippi State University（密西西比州立大学）；Brookhaven National Laboratory（布鲁克海文国家实验室）；CERN（欧洲核子研究组织）；Christopher Newport University（克里斯托弗纽波特大学）；Duke University（杜克大学）；Facility for Rare Isotope Beams, Michigan State University（密歇根州立大学稀有同位束设施）；Michigan State University（密歇根州立大学）；Universidade Federal do Maranhão（马拉尼昂联邦大学）；Universidade Federal do Rio Grande do Sul（南里奥格兰德联邦大学）；Universidade Federal do Triângulo Mineiro（米纳斯吉拉斯三角区联邦大学）；Indian Institute of Technology Guwahati（古瓦哈提印度理工学院）；Istituto Nazionale Fisica Nucleare - Sezione di Genova（意大利国家核物理研究所热那亚分部）；Università degli Studi di Genova（热那亚大学）；Institut für Theoretische Physik, Leibniz Universität, Hannover（汉诺威莱布尼茨大学理论物理研究所）；Oak Ridge National Laboratory（橡树岭国家实验室）
The Jefferson Lab CLAS12 detector will provide a world-leading facility for the study of electron-nucleon scattering. The CLAS12 physics program is very broad and includes studies on quarks dynamics as well as studies on the meson and baryon spectroscopy with quasi-real photoproduction in a large variety of final states. The particle identification will be complemented by a ring imaging Cherenkov detector (RICH), that will provide separation of kaons from protons and pions in the momentum range between 3 and 8 GeV/c allowing the study of pion and kaon electroproduction in semi-inclusive deep i…
