Observation of π-K+ and π+K- atoms

被引：0
|
作者：
Yazkov, Valeriy [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, DV Skobeltsyn Inst Nucl Phys, Leninskie Gory 1, Moscow 119991, Russia
来源：
INTERNATIONAL CONFERENCE ON EXOTIC ATOMS AND RELATED TOPICS - EXA2017 | 2018年 / 181卷
关键词：
D O I：
10.1051/epjconf/201818101036
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Experiment DIRAC at CERN PS detects 349 +/- 62 pairs from pi K--(+) and pi K-+(-) atoms and makes observation of exotic atoms consist of pion and kaon. It allows to measure a difference of S-wave pion-kaon scattering length with isospin 1/2 and 3/2: vertical bar a(0)(1/2) - a(0)(3/2)vertical bar. Values of pion-kaon scattering lengths are predicted in a frame of ChPT and LQCD. Therefore investigation of pi K--(+) and pi K-+(-) atoms gives possibility to check these predictions for simplest hadron-hadron system with s-quark.
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