Search for η mesic 3He with the WASA-at-COSY facility in the pd→3He2γ and pd→3He6γ reactions

Standard

Search for η mesic ³He with the WASA-at-COSY facility in the pd→³He2γ and pd→³He6γ reactions. / The WASA-at-COSY Collaboration ; Шварц, Борис Альбертович.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 802, 135205, 10.03.2020.

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

Harvard

The WASA-at-COSY Collaboration & Шварц, БА 2020, 'Search for η mesic ³He with the WASA-at-COSY facility in the pd→³He2γ and pd→³He6γ reactions', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 802, 135205. https://doi.org/10.1016/j.physletb.2020.135205

APA

The WASA-at-COSY Collaboration, & Шварц, Б. А. (2020). Search for η mesic ³He with the WASA-at-COSY facility in the pd→³He2γ and pd→³He6γ reactions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 802, [135205]. https://doi.org/10.1016/j.physletb.2020.135205

Vancouver

The WASA-at-COSY Collaboration, Шварц БА. Search for η mesic ³He with the WASA-at-COSY facility in the pd→³He2γ and pd→³He6γ reactions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2020 Mar 10;802:135205. doi: 10.1016/j.physletb.2020.135205

Author

The WASA-at-COSY Collaboration ; Шварц, Борис Альбертович. / Search for η mesic ³He with the WASA-at-COSY facility in the pd→³He2γ and pd→³He6γ reactions. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2020 ; Vol. 802.

BibTeX

@article{a7dc665d34da4b168743a4fdd470dd05,

title = "Search for η mesic 3He with the WASA-at-COSY facility in the pd→3He2γ and pd→3He6γ reactions",

abstract = "We report on the experimental search for the bound state of an η meson and He3 nucleus performed using the WASA-at-COSY detector setup. In order to search for the η-mesic nucleus decay, the pd→3He2γ and pd→3He6γ channels have been analysed. These reactions manifest the direct decay of the η meson bound in a He3 nucleus. This non-mesonic decay channel has been considered for the first time. When taking into account only statistical errors, the obtained excitation functions reveal a slight indication for a possible bound state signal corresponding to a 3He-η nucleus width Γ above 20 MeV and binding energy Bs between 0 and 15 MeV. However, the determined cross sections are consistent with zero in the range of the systematic uncertainty. Therefore, as final result we estimate only the upper limit for the cross section of the η-mesic He3 nucleus formation followed by the η meson decay which varies between 2 nb and 15 nb depending on possible bound state parameters.",

keywords = "η meson, η-mesic nuclei, eta-meson, NUCLEI, BOUND-STATES, MESON, eta-mesic nuclei",

author = "{The WASA-at-COSY Collaboration} and P. Adlarson and W. Augustyniak and W. Bardan and M. Bashkanov and Bass, {S. D.} 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 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 L. Heijkenskj{\"o}ld and V. Hejny and S. Hirenzaki and L. Jarczyk and T. Johansson and B. Kamys and Kelkar, {N. G.} and G. Kemmerling 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 K. Lalwani and D. Lersch and B. Lorentz and A. Magiera and R. Maier and P. Marciniewski and B. Maria{\'n}ski and Morsch, {H. P.} and P. Moskal and H. Ohm and W. Parol and {Perez del Rio}, E. and Шварц, {Борис Альбертович}",

year = "2020",

month = mar,

day = "10",

doi = "10.1016/j.physletb.2020.135205",

language = "English",

volume = "802",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Search for η mesic 3He with the WASA-at-COSY facility in the pd→3He2γ and pd→3He6γ reactions

AU - The WASA-at-COSY Collaboration

AU - Adlarson, P.

AU - Augustyniak, W.

AU - Bardan, W.

AU - Bashkanov, M.

AU - Bass, S. D.

AU - Berłowski, M.

AU - Bondar, A.

AU - Büscher, M.

AU - Calén, H.

AU - Ciepał, I.

AU - Clement, H.

AU - Czerwiński, E.

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 - Heijkenskjöld, L.

AU - Hejny, V.

AU - Hirenzaki, S.

AU - Jarczyk, L.

AU - Johansson, T.

AU - Kamys, B.

AU - Kelkar, N. G.

AU - Kemmerling, G.

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 - Lalwani, K.

AU - Lersch, D.

AU - Lorentz, B.

AU - Magiera, A.

AU - Maier, R.

AU - Marciniewski, P.

AU - Mariański, B.

AU - Morsch, H. P.

AU - Moskal, P.

AU - Ohm, H.

AU - Parol, W.

AU - Perez del Rio, E.

AU - Шварц, Борис Альбертович

PY - 2020/3/10

Y1 - 2020/3/10

N2 - We report on the experimental search for the bound state of an η meson and He3 nucleus performed using the WASA-at-COSY detector setup. In order to search for the η-mesic nucleus decay, the pd→3He2γ and pd→3He6γ channels have been analysed. These reactions manifest the direct decay of the η meson bound in a He3 nucleus. This non-mesonic decay channel has been considered for the first time. When taking into account only statistical errors, the obtained excitation functions reveal a slight indication for a possible bound state signal corresponding to a 3He-η nucleus width Γ above 20 MeV and binding energy Bs between 0 and 15 MeV. However, the determined cross sections are consistent with zero in the range of the systematic uncertainty. Therefore, as final result we estimate only the upper limit for the cross section of the η-mesic He3 nucleus formation followed by the η meson decay which varies between 2 nb and 15 nb depending on possible bound state parameters.

AB - We report on the experimental search for the bound state of an η meson and He3 nucleus performed using the WASA-at-COSY detector setup. In order to search for the η-mesic nucleus decay, the pd→3He2γ and pd→3He6γ channels have been analysed. These reactions manifest the direct decay of the η meson bound in a He3 nucleus. This non-mesonic decay channel has been considered for the first time. When taking into account only statistical errors, the obtained excitation functions reveal a slight indication for a possible bound state signal corresponding to a 3He-η nucleus width Γ above 20 MeV and binding energy Bs between 0 and 15 MeV. However, the determined cross sections are consistent with zero in the range of the systematic uncertainty. Therefore, as final result we estimate only the upper limit for the cross section of the η-mesic He3 nucleus formation followed by the η meson decay which varies between 2 nb and 15 nb depending on possible bound state parameters.

KW - η meson

KW - η-mesic nuclei

KW - eta-meson

KW - NUCLEI

KW - BOUND-STATES

KW - MESON

KW - eta-mesic nuclei

UR - http://www.scopus.com/inward/record.url?scp=85077926532&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2020.135205

DO - 10.1016/j.physletb.2020.135205

M3 - Article

AN - SCOPUS:85077926532

VL - 802

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

M1 - 135205

ER -

ID: 23187482