Measurement of the charge asymmetry for the KS → πeν decay and test of CPT symmetry with the KLOE detector
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Published:2018-09
Issue:9
Volume:2018
Page:
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ISSN:1029-8479
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Container-title:Journal of High Energy Physics
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language:en
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Short-container-title:J. High Energ. Phys.
Author:
, Anastasi A., Babusci D., Berlowski M., Bloise C., Bossi F., Branchini P., Budano A., Cao B., Capon G., Ceradini F., Ciambrone P., Curciarello F., Czerwinski E., D’Agostini G., Danè E., De Leo V., De Lucia E., De Santis A., De Simone P., Di Cicco A., Di Domenico A., Domenici D., D’Uffizi A., Fantini A., Fantini G., Fermani P., Fiore S., Gajos A., Gauzzi P., Giovannella S., Graziani E., Ivanov V. L., Johansson T., Kang X., Kisielewska-Kaminska D.ORCID, Kozyrev E. A., Krzemien W., Kupsć A., Loffredo S., Lukin P. A., Mandaglio G., Martini M., Messi R., Miscetti S., Moricciani D., Moskal P., Passeri A., Patera V., Perez del Rio E., Raha N., Santangelo P., Schioppa M., Selce A., Silarski M., Sirghi F., Solodov E. P., Tortora L., Venanzoni G., Wislicki W., Wolke M.
Abstract
Abstract
Using 1.63 fb−1 of integrated luminosity collected by the KLOE experiment about 7 × 104
K
S
→ π
±
e
∓
ν decays have been reconstructed. The measured value of the charge asymmetry for this decay is A
S
= (−4.9 ± 5.7stat ± 2.6syst) × 10−3, which is almost twice more precise than the previous KLOE result. The combination of these two measurements gives A
S
= (−3.8 ± 5.0stat ± 2.6syst) × 10−3 and, together with the asymmetry of the K
L
semileptonic decay, provides significant tests of the CPT symmetry. The obtained results are in agreement with CPT invariance.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference23 articles.
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