Published December 2007
| Version v1
Journal article
Precise measurements of the η meson and the neutral kaon masses with the KLOE detector
- 1. Dip. di Scienze Fisiche dell'Universita 'Federico II' e Sezione INFN, Naples (Italy)
- 2. Laboratori Nazionali di Frascati dell'INFN, Frascati (Italy)
Description
We present precise measurements of the η and K0 masses using the processes φ→ηγ, η→γγ and φ → KS K L, KS→π+π-. The K0 mass measurement, MK 497.583±0.005stat±0.020syst MeV, is in acceptable agreement with the previous measurements but is more accurate. We find mη 547.874±0.007stat±0.029syst MeV. Our value is the most accurate to date and is in agreement with two recent measurements based on η decays, but is inconsistent, by about 10σ, with a measurement of comparable precision based on η production at threshold
Additional details
Identifiers
Publishing Information
- Journal Title
- Journal of High Energy Physics
- Journal Volume
- 2007
- Journal Issue
- 12
- Journal Page Range
- p. 073
- ISSN
- 1126-6708
INIS
- Country of Publication
- Italy
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39044338
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ACCURACY; ETA MESONS; KAONS NEUTRAL LONG-LIVED; KAONS NEUTRAL SHORT-LIVED; MEV RANGE; MULTIPARTICLE SPECTROMETERS; PARTICLE DECAY; PARTICLE IDENTIFICATION; PARTICLE PRODUCTION; PHI MESONS; PHOTONS; PIONS MINUS; PIONS PLUS; REST MASS
- Descriptors DEC
- BOSONS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; HADRONS; KAONS; KAONS NEUTRAL; MASS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; MESONS; PIONS; PSEUDOSCALAR MESONS; SPECTROMETERS; STRANGE MESONS; STRANGE PARTICLES
Optional Information
- Collaborations
- KLOE Collaboration