We present precise measurements of the η and K0 masses using the pro- cesses φ → ηγ, η → γγ and φ → KSKL, KS → π+π−. The K0 mass measurement, MK = 497.583 ± 0.005stat ± 0.020systMeV, is in acceptable agreement with the previ- ous 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.

Precise measurements of the eta meson and the neutral kaon masses with the KLOE detector / F., A., A., A., M., A., F., A., C., B., P., B., G., B., S., B., Bini, C., C., B., S., B., F., B., P., B., Caloi, R., P., C., G., C., T., C., F., C., S., C., G., C., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - (2007). [10.1088/1126-6708/2007/12/073]

Precise measurements of the eta meson and the neutral kaon masses with the KLOE detector

BINI, Cesare;CALOI, Rita;DE SANTIS, ANTONIO;DE ZORZI, Guido;DI DOMENICO, Antonio;FIORE, SALVATORE;FRANZINI, Paolo;GAUZZI, Paolo;LACAVA, Francesco;PATERA, Vincenzo;SCIUBBA, Adalberto;
2007

Abstract

We present precise measurements of the η and K0 masses using the pro- cesses φ → ηγ, η → γγ and φ → KSKL, KS → π+π−. The K0 mass measurement, MK = 497.583 ± 0.005stat ± 0.020systMeV, is in acceptable agreement with the previ- ous 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.
2007
e plus -e experiments
01 Pubblicazione su rivista::01a Articolo in rivista
Precise measurements of the eta meson and the neutral kaon masses with the KLOE detector / F., A., A., A., M., A., F., A., C., B., P., B., G., B., S., B., Bini, C., C., B., S., B., F., B., P., B., Caloi, R., P., C., G., C., T., C., F., C., S., C., G., C., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - (2007). [10.1088/1126-6708/2007/12/073]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/231057
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