Standard

Search for C violation in the decay η → π0e+e− with WASA-at-COSY. / The WASA-at-COSY Collaboration.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 784, 10.09.2018, p. 378-384.

Research output: Contribution to journal › Article › peer-review

Harvard

The WASA-at-COSY Collaboration 2018, 'Search for C violation in the decay η → π0e+e− with WASA-at-COSY', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 784, pp. 378-384. https://doi.org/10.1016/j.physletb.2018.07.017

APA

The WASA-at-COSY Collaboration (2018). Search for C violation in the decay η → π0e+e− with WASA-at-COSY. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 784, 378-384. https://doi.org/10.1016/j.physletb.2018.07.017

Vancouver

The WASA-at-COSY Collaboration. Search for C violation in the decay η → π0e+e− with WASA-at-COSY. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2018 Sept 10;784:378-384. doi: 10.1016/j.physletb.2018.07.017

Author

The WASA-at-COSY Collaboration. / Search for C violation in the decay η → π0e+e− with WASA-at-COSY. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2018 ; Vol. 784. pp. 378-384.

BibTeX

@article{c1e341431044425e9694a33f2569c518,
title = "Search for C violation in the decay η → π0e+e− with WASA-at-COSY",
abstract = "We report on the search for the rare decay η→π0e+e− which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum J{\"u}lich, Germany. In total 3×107 events of the reaction pd→3Heη have been recorded at an excess energy of Q=59.8MeV. Based on this data set the C parity violating decay η→π0γ⁎→π0e+e− via a single-photon intermediate state has been searched for, resulting in new upper limits of Γ(η→π0e+e−)/Γ(η→π+π−π0)<3.28×10−5 and Γ(η→π0e+e−)/Γ(η→all)<7.5×10−6 (CL=90%), respectively.",
keywords = "CONSERVING DECAY, UPPER LIMIT",
author = "{The WASA-at-COSY Collaboration} and P. Adlarson and W. Augustyniak and W. Bardan and M. Bashkanov and Bergmann, {F. S.} and M. Ber{\l}owski and A. Bondar and M. B{\"u}scher and H. Cal{\'e}n and I. Ciepa{\l} and H. Clement and E. Czerwi{\'n}ski and K. Demmich and R. Engels and A. Erven and W. Erven and W. Eyrich and P. Fedorets and K. F{\"o}hl and K. Fransson and F. Goldenbaum and A. Goswami and K. Grigoryev and Gullstr{\"o}m, {C. O.} and L. Heijkenskj{\"o}ld and V. Hejny and N. H{\"u}sken and L. Jarczyk and T. Johansson and B. Kamys and G. Kemmerling and G. Khatri and A. Khoukaz and A. Khreptak and Kirillov, {D. A.} and S. Kistryn and H. Kleines and B. K{\l}os and W. Krzemie{\'n} and P. Kulessa and A. Kup{\'s}{\'c} and A. Kuzmin and K. Lalwani and D. Lersch and B. Lorentz and A. Magiera and R. Maier and P. Marciniewski and B. Maria{\'n}ski and B. Shwartz",
note = "Publisher Copyright: {\textcopyright} 2018 The Author",
year = "2018",
month = sep,
day = "10",
doi = "10.1016/j.physletb.2018.07.017",
language = "English",
volume = "784",
pages = "378--384",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Search for C violation in the decay η → π0e+e− with WASA-at-COSY

AU - The WASA-at-COSY Collaboration

AU - Adlarson, P.

AU - Augustyniak, W.

AU - Bardan, W.

AU - Bashkanov, M.

AU - Bergmann, F. S.

AU - Berłowski, M.

AU - Bondar, A.

AU - Büscher, M.

AU - Calén, H.

AU - Ciepał, I.

AU - Clement, H.

AU - Czerwiński, E.

AU - Demmich, K.

AU - Engels, R.

AU - Erven, A.

AU - Erven, W.

AU - Eyrich, W.

AU - Fedorets, P.

AU - Föhl, K.

AU - Fransson, K.

AU - Goldenbaum, F.

AU - Goswami, A.

AU - Grigoryev, K.

AU - Gullström, C. O.

AU - Heijkenskjöld, L.

AU - Hejny, V.

AU - Hüsken, N.

AU - Jarczyk, L.

AU - Johansson, T.

AU - Kamys, B.

AU - Kemmerling, G.

AU - Khatri, G.

AU - Khoukaz, A.

AU - Khreptak, A.

AU - Kirillov, D. A.

AU - Kistryn, S.

AU - Kleines, H.

AU - Kłos, B.

AU - Krzemień, W.

AU - Kulessa, P.

AU - Kupść, A.

AU - Kuzmin, A.

AU - Lalwani, K.

AU - Lersch, D.

AU - Lorentz, B.

AU - Magiera, A.

AU - Maier, R.

AU - Marciniewski, P.

AU - Mariański, B.

AU - Shwartz, B.

N1 - Publisher Copyright: © 2018 The Author

PY - 2018/9/10

Y1 - 2018/9/10

N2 - We report on the search for the rare decay η→π0e+e− which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum Jülich, Germany. In total 3×107 events of the reaction pd→3Heη have been recorded at an excess energy of Q=59.8MeV. Based on this data set the C parity violating decay η→π0γ⁎→π0e+e− via a single-photon intermediate state has been searched for, resulting in new upper limits of Γ(η→π0e+e−)/Γ(η→π+π−π0)<3.28×10−5 and Γ(η→π0e+e−)/Γ(η→all)<7.5×10−6 (CL=90%), respectively.

AB - We report on the search for the rare decay η→π0e+e− which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum Jülich, Germany. In total 3×107 events of the reaction pd→3Heη have been recorded at an excess energy of Q=59.8MeV. Based on this data set the C parity violating decay η→π0γ⁎→π0e+e− via a single-photon intermediate state has been searched for, resulting in new upper limits of Γ(η→π0e+e−)/Γ(η→π+π−π0)<3.28×10−5 and Γ(η→π0e+e−)/Γ(η→all)<7.5×10−6 (CL=90%), respectively.

KW - CONSERVING DECAY

KW - UPPER LIMIT

UR - http://www.scopus.com/inward/record.url?scp=85052052848&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2018.07.017

DO - 10.1016/j.physletb.2018.07.017

M3 - Article

AN - SCOPUS:85052052848

VL - 784

SP - 378

EP - 384

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -

ID: 16243219