Published 2005 | Version v1
Book Metadata-only

First measurement of the π+π- atom lifetime

Creators

  • 1. Joint Institute for Nuclear Research, Dubna, Moscow Region (Russian Federation). Lab. of Nuclear Problems

Description

The goal of the DIRAC experiment at CERN (PS212) is to measure the π+π- atom lifetime with 10% precision. Such a measurement would yield a precision of 5% on the value of the S-wave ππ scattering lengths combination |a0 - a2|. Based on part of the collected data we present a first result on the lifetime, τ = [2.91-0.62+0.49] x 10-15 s, and discuss the major systematic errors. This lifetime corresponds to |a0 - a2| = 0.264 m -0.020+0.033 mπ-1. (author)

Part of:
Hadron spectroscopy. Proceedings of the 11. International conference on hadron spectroscopy

Additional details

Publishing Information

Publisher
AIP
Imprint Place
New York (United States)
ISBN
0-7354-0307-4
Imprint Title
Hadron spectroscopy. Proceedings of the 11. International conference on hadron spectroscopy
Imprint Pagination
780 p.
Journal Page Range
p. 220-229

Conference

Title
11. International Conference on Hadron Spectroscopy
Dates
21-26 Aug 2005
Place
Rio de Janeiro (Brazil)

INIS

Country of Publication
United States
Country of Input or Organization
Brazil
INIS RN
37092617
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
A CODES; BREAKUP REACTIONS; CERN PS SYNCHROTRON; DATA COVARIANCES; EXPERIMENTAL DATA; G CODES; LIFETIME; MAGNETIC SPECTROMETERS; PAIR PRODUCTION; PIONIC ATOMS; PIONIUM; PIONS MINUS; PIONS PLUS; SCATTERING LENGTHS
Descriptors DEC
ACCELERATORS; ATOMS; BOSONS; COMPUTER CODES; CYCLIC ACCELERATORS; DATA; DIMENSIONS; ELEMENTARY PARTICLES; HADRONIC ATOMS; HADRONS; INFORMATION; INTERACTIONS; LENGTH; MEASURING INSTRUMENTS; MESIC ATOMS; MESONS; NUCLEAR REACTIONS; NUMERICAL DATA; PARTICLE PRODUCTION; PIONS; PSEUDOSCALAR MESONS; SPECTROMETERS; SYNCHROTRONS

Optional Information

Notes
26 refs., 3 figs., 3 tabs.; (DIRAC collaboration) Imprint:AIP Conference Proceedings, v. 814