Published July 2003 | Version v1
Journal article Metadata-only

Observation of pionic 1s states in Sn nuclei and its implications on chiral symmetry restoration

Creators

  • 1. Tokyo Univ., Dept. of Physics, Tokyo (Japan)
  • 2. Nara Women's Univ., Dept. of Physics, Nara (Japan)
  • 3. Gesellshaft fuer Schwerionenforschung, Darmstadt (Germany)

Description

We observed deeply bound π- 1s states in 115,119,123Sn for the first time in 116,120,124Sn (d, 3He) reactions at recoil free conditions to determine the 1s binding energies and the widths precisely. A preliminary result is used to deduce the isovector scattering amplitude as b1 = 0.115 ± 0.005 mπ-1. The observed enhancement of b1 over the free πN value infers 35% reduction of fπ2 at the normal nuclear density, ρ = 0.17 fm-3. (author)

Additional details

Publishing Information

Journal Title
Progress of Theoretical Physics, Supplement
Journal Issue
no.149
Journal Page Range
p. 32-41
ISSN
0375-9687

Conference

Title
YITP-RCNP workshop on chiral restoration in nuclear medium
Acronym
Chiral 02
Dates
7-9 Oct 2002
Place
Kyoto (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
34068709
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BINDING ENERGY; CHIRAL SYMMETRY; CHIRALITY; CRITICAL TEMPERATURE; LEVEL WIDTHS; NUCLEAR MATTER; NUCLEAR MODELS; NUCLEAR STRUCTURE; ORDER PARAMETERS; PIONIC ATOMS; QUANTUM CHROMODYNAMICS; RECOILLESS FRACTION; S STATES; SYMMETRY BREAKING; TIN ISOTOPES
Descriptors DEC
ATOMS; ENERGY; ENERGY LEVELS; FIELD THEORIES; HADRONIC ATOMS; ISOTOPES; MATHEMATICAL MODELS; MATTER; MESIC ATOMS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; QUANTUM FIELD THEORY; SYMMETRY; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE

Optional Information

Notes
35 refs., 4 figs., 2 tabs.