Search for η-mesic 4He with the WASA-at-COSY detector

P. Adlarson; W. Augustyniak; W. Bardan; M. Bashkanov; T. Bednarski; F. S. Bergmann; M. Berłowski; H. Bhatt; M. Büscher; H. Calén; H. Clement; D. Coderre; E. Czerwiński; K. Demmich; E. Doroshkevich; R. Engels; W. Erven; W. Eyrich; P. Fedorets; K. Föhl; K. Fransson; F. Goldenbaum; P. Goslawski; A. Goswami; K. Grigoryev; C. O. Gullström; F. Hauenstein; L. Heijkenskjöld; V. Hejny; F. Hinterberger; M. Hodana; B. Höistad; A. Jany; B. R. Jany; L. Jarczyk; T. Johansson; B. Kamys; G. Kemmerling; F. A. Khan; A. Khoukaz; S. Kistryn; J. Klaja; H. Kleines; B. Kłos; M. Krapp; W. Krzemień; P. Kulessa; A. Kupåć; K. Lalwani; D. Lersch; L. Li; B. Lorentz; A. Magiera; R. Maier; P. Marciniewski; B. Mariański; M. Mikirtychiants; H. P. Morsch; P. Moskal; B. K. Nandi; S. Niedåwiecki; H. Ohm; I. Ozerianska; E. Perez Del Rio; P. Pluciński; P. Podkopał; D. Prasuhn; A. Pricking; D. Pszczel; K. Pysz; A. Pyszniak; C. F. Redmer; J. Ritman; A. Roy; Z. Rudy; S. Sawant; S. Schadmand; A. Schmidt; T. Sefzick; V. Serdyuk; N. Shah; M. Siemaszko; R. Siudak; T. Skorodko; M. Skurzok; J. Smyrski; V. Sopov; R. Stassen; J. Stepaniak; E. Stephan; G. Sterzenbach; H. Stockhorst; H. Ströher; A. Szczurek; T. Tolba; A. Trzciński; R. Varma; P. Vlasov; G. J. Wagner; W. Wȩglorz; M. Wolke; A. Wrońska; P. Wüstner; P. Wurm; A. Yamamoto; X. Yuan; L. Yurev; J. Zabierowski; C. Zheng; M. J. Zieliński; W. Zipper; J. Złomańczuk; P. Auprański; M. Aurek

doi:10.1103/PhysRevC.87.035204

Search for η-mesic 4He with the WASA-at-COSY detector

P. Adlarson^*, W. Augustyniak, W. Bardan, M. Bashkanov, T. Bednarski, F. S. Bergmann, M. Berłowski, H. Bhatt, M. Büscher, H. Calén, H. Clement, D. Coderre, E. Czerwiński, K. Demmich, E. Doroshkevich, R. Engels, W. Erven, W. Eyrich, P. Fedorets, K. FöhlK. Fransson, F. Goldenbaum, P. Goslawski, A. Goswami, K. Grigoryev, C. O. Gullström, F. Hauenstein, L. Heijkenskjöld, V. Hejny, F. Hinterberger, M. Hodana, B. Höistad, A. Jany, B. R. Jany, L. Jarczyk, T. Johansson, B. Kamys, G. Kemmerling, F. A. Khan, A. Khoukaz, S. Kistryn, J. Klaja, H. Kleines, B. Kłos, M. Krapp, W. Krzemień, P. Kulessa, A. Kupåć, K. Lalwani, D. Lersch, L. Li, B. Lorentz, A. Magiera, R. Maier, P. Marciniewski, B. Mariański, M. Mikirtychiants, H. P. Morsch, P. Moskal, B. K. Nandi, S. Niedåwiecki, H. Ohm, I. Ozerianska, E. Perez Del Rio, P. Pluciński, P. Podkopał, D. Prasuhn, A. Pricking, D. Pszczel, K. Pysz, A. Pyszniak, C. F. Redmer, J. Ritman, A. Roy, Z. Rudy, S. Sawant, S. Schadmand, A. Schmidt, T. Sefzick, V. Serdyuk, N. Shah, M. Siemaszko, R. Siudak, T. Skorodko, M. Skurzok, J. Smyrski, V. Sopov, R. Stassen, J. Stepaniak, E. Stephan, G. Sterzenbach, H. Stockhorst, H. Ströher, A. Szczurek, T. Tolba, A. Trzciński, R. Varma, P. Vlasov, G. J. Wagner, W. Wȩglorz, M. Wolke, A. Wrońska, P. Wüstner, P. Wurm, A. Yamamoto, X. Yuan, L. Yurev, J. Zabierowski, C. Zheng, M. J. Zieliński, W. Zipper, J. Złomańczuk, P. Auprański, M. Aurek

^*Corresponding author for this work

Physics

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

Abstract

An exclusive measurement of the excitation function for the dd→3Hepπ^- reaction was performed at the Cooler Synchrotron COSY-Jülich with the WASA-at-COSY detection system. The data were taken during a slow acceleration of the beam from 2.185 to 2.400 GeV/c crossing the kinematic threshold for the η-meson production in the dd→4Heη reaction at 2.336 GeV/c. The corresponding excess energy with respect to the 4He-η system varied from -51.4 to 22 MeV. The integrated luminosity in the experiment was determined using the dd→3Hen reaction. The shape of the excitation function for the dd→3Hepπ^- reaction was examined. No signal of the 4He-η bound state was observed. An upper limit for the cross section for the bound state formation and decay in the process dd→(4He-η)bound→3Hepπ^- was determined on the 90% confidence level and it varies from 20 to 27 nb for the bound state width ranging from 5 to 35 MeV, respectively.

Original language	English
Article number	035204
Journal	Physical Review C - Nuclear Physics
Volume	87
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.87.035204
Publication status	Published - 8 Mar 2013

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10.1103/PhysRevC.87.035204

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Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bednarski, T., Bergmann, F. S., Berłowski, M., Bhatt, H., Büscher, M., Calén, H., Clement, H., Coderre, D., Czerwiński, E., Demmich, K., Doroshkevich, E., Engels, R., Erven, W., Eyrich, W., Fedorets, P., ... Aurek, M. (2013). Search for η-mesic 4He with the WASA-at-COSY detector. Physical Review C - Nuclear Physics, 87(3), Article 035204. https://doi.org/10.1103/PhysRevC.87.035204

@article{ce9da47882064f3db567ce619731e884,

title = "Search for η-mesic 4He with the WASA-at-COSY detector",

abstract = "An exclusive measurement of the excitation function for the dd→3Hepπ- reaction was performed at the Cooler Synchrotron COSY-J{\"u}lich with the WASA-at-COSY detection system. The data were taken during a slow acceleration of the beam from 2.185 to 2.400 GeV/c crossing the kinematic threshold for the η-meson production in the dd→4Heη reaction at 2.336 GeV/c. The corresponding excess energy with respect to the 4He-η system varied from -51.4 to 22 MeV. The integrated luminosity in the experiment was determined using the dd→3Hen reaction. The shape of the excitation function for the dd→3Hepπ- reaction was examined. No signal of the 4He-η bound state was observed. An upper limit for the cross section for the bound state formation and decay in the process dd→(4He-η)bound→3Hepπ- was determined on the 90% confidence level and it varies from 20 to 27 nb for the bound state width ranging from 5 to 35 MeV, respectively.",

author = "P. Adlarson and W. Augustyniak and W. Bardan and M. Bashkanov and T. Bednarski and Bergmann, {F. S.} and M. Ber{\l}owski and H. Bhatt and M. B{\"u}scher and H. Cal{\'e}n and H. Clement and D. Coderre and E. Czerwi{\'n}ski and K. Demmich and E. Doroshkevich and R. Engels and W. Erven and W. Eyrich and P. Fedorets and K. F{\"o}hl and K. Fransson and F. Goldenbaum and P. Goslawski and A. Goswami and K. Grigoryev and Gullstr{\"o}m, {C. O.} and F. Hauenstein and L. Heijkenskj{\"o}ld and V. Hejny and F. Hinterberger and M. Hodana and B. H{\"o}istad and A. Jany and Jany, {B. R.} and L. Jarczyk and T. Johansson and B. Kamys and G. Kemmerling and Khan, {F. A.} and A. Khoukaz and S. Kistryn and J. Klaja and H. Kleines and B. K{\l}os and M. Krapp and W. Krzemie{\'n} and P. Kulessa and A. Kup{\aa}{\'c} and K. Lalwani and D. Lersch and L. Li and B. Lorentz and A. Magiera and R. Maier and P. Marciniewski and B. Maria{\'n}ski and M. Mikirtychiants and Morsch, {H. P.} and P. Moskal and Nandi, {B. K.} and S. Nied{\aa}wiecki and H. Ohm and I. Ozerianska and {Perez Del Rio}, E. and P. Pluci{\'n}ski and P. Podkopa{\l} and D. Prasuhn and A. Pricking and D. Pszczel and K. Pysz and A. Pyszniak and Redmer, {C. F.} and J. Ritman and A. Roy and Z. Rudy and S. Sawant and S. Schadmand and A. Schmidt and T. Sefzick and V. Serdyuk and N. Shah and M. Siemaszko and R. Siudak and T. Skorodko and M. Skurzok and J. Smyrski and V. Sopov and R. Stassen and J. Stepaniak and E. Stephan and G. Sterzenbach and H. Stockhorst and H. Str{\"o}her and A. Szczurek and T. Tolba and A. Trzci{\'n}ski and R. Varma and P. Vlasov and Wagner, {G. J.} and W. Wȩglorz and M. Wolke and A. Wro{\'n}ska and P. W{\"u}stner and P. Wurm and A. Yamamoto and X. Yuan and L. Yurev and J. Zabierowski and C. Zheng and Zieli{\'n}ski, {M. J.} and W. Zipper and J. Z{\l}oma{\'n}czuk and P. Aupra{\'n}ski and M. Aurek",

year = "2013",

month = mar,

day = "8",

doi = "10.1103/PhysRevC.87.035204",

language = "English",

volume = "87",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "3",

}

Adlarson, P, Augustyniak, W, Bardan, W, Bashkanov, M, Bednarski, T, Bergmann, FS, Berłowski, M, Bhatt, H, Büscher, M, Calén, H, Clement, H, Coderre, D, Czerwiński, E, Demmich, K, Doroshkevich, E, Engels, R, Erven, W, Eyrich, W, Fedorets, P, Föhl, K, Fransson, K, Goldenbaum, F, Goslawski, P, Goswami, A, Grigoryev, K, Gullström, CO, Hauenstein, F, Heijkenskjöld, L, Hejny, V, Hinterberger, F, Hodana, M, Höistad, B, Jany, A, Jany, BR, Jarczyk, L, Johansson, T, Kamys, B, Kemmerling, G, Khan, FA, Khoukaz, A, Kistryn, S, Klaja, J, Kleines, H, Kłos, B, Krapp, M, Krzemień, W, Kulessa, P, Kupåć, A, Lalwani, K, Lersch, D, Li, L, Lorentz, B, Magiera, A, Maier, R, Marciniewski, P, Mariański, B, Mikirtychiants, M, Morsch, HP, Moskal, P, Nandi, BK, Niedåwiecki, S, Ohm, H, Ozerianska, I, Perez Del Rio, E, Pluciński, P, Podkopał, P, Prasuhn, D, Pricking, A, Pszczel, D, Pysz, K, Pyszniak, A, Redmer, CF, Ritman, J, Roy, A, Rudy, Z, Sawant, S, Schadmand, S, Schmidt, A, Sefzick, T, Serdyuk, V, Shah, N, Siemaszko, M, Siudak, R, Skorodko, T, Skurzok, M, Smyrski, J, Sopov, V, Stassen, R, Stepaniak, J, Stephan, E, Sterzenbach, G, Stockhorst, H, Ströher, H, Szczurek, A, Tolba, T, Trzciński, A, Varma, R, Vlasov, P, Wagner, GJ, Wȩglorz, W, Wolke, M, Wrońska, A, Wüstner, P, Wurm, P, Yamamoto, A, Yuan, X, Yurev, L, Zabierowski, J, Zheng, C, Zieliński, MJ, Zipper, W, Złomańczuk, J, Auprański, P & Aurek, M 2013, 'Search for η-mesic 4He with the WASA-at-COSY detector', Physical Review C - Nuclear Physics, vol. 87, no. 3, 035204. https://doi.org/10.1103/PhysRevC.87.035204

TY - JOUR

T1 - Search for η-mesic 4He with the WASA-at-COSY detector

AU - Adlarson, P.

AU - Augustyniak, W.

AU - Bardan, W.

AU - Bashkanov, M.

AU - Bednarski, T.

AU - Bergmann, F. S.

AU - Berłowski, M.

AU - Bhatt, H.

AU - Büscher, M.

AU - Calén, H.

AU - Clement, H.

AU - Coderre, D.

AU - Czerwiński, E.

AU - Demmich, K.

AU - Doroshkevich, E.

AU - Engels, R.

AU - Erven, W.

AU - Eyrich, W.

AU - Fedorets, P.

AU - Föhl, K.

AU - Fransson, K.

AU - Goldenbaum, F.

AU - Goslawski, P.

AU - Goswami, A.

AU - Grigoryev, K.

AU - Gullström, C. O.

AU - Hauenstein, F.

AU - Heijkenskjöld, L.

AU - Hejny, V.

AU - Hinterberger, F.

AU - Hodana, M.

AU - Höistad, B.

AU - Jany, A.

AU - Jany, B. R.

AU - Jarczyk, L.

AU - Johansson, T.

AU - Kamys, B.

AU - Kemmerling, G.

AU - Khan, F. A.

AU - Khoukaz, A.

AU - Kistryn, S.

AU - Klaja, J.

AU - Kleines, H.

AU - Kłos, B.

AU - Krapp, M.

AU - Krzemień, W.

AU - Kulessa, P.

AU - Kupåć, A.

AU - Lalwani, K.

AU - Lersch, D.

AU - Li, L.

AU - Lorentz, B.

AU - Magiera, A.

AU - Maier, R.

AU - Marciniewski, P.

AU - Mariański, B.

AU - Mikirtychiants, M.

AU - Morsch, H. P.

AU - Moskal, P.

AU - Nandi, B. K.

AU - Niedåwiecki, S.

AU - Ohm, H.

AU - Ozerianska, I.

AU - Perez Del Rio, E.

AU - Pluciński, P.

AU - Podkopał, P.

AU - Prasuhn, D.

AU - Pricking, A.

AU - Pszczel, D.

AU - Pysz, K.

AU - Pyszniak, A.

AU - Redmer, C. F.

AU - Ritman, J.

AU - Roy, A.

AU - Rudy, Z.

AU - Sawant, S.

AU - Schadmand, S.

AU - Schmidt, A.

AU - Sefzick, T.

AU - Serdyuk, V.

AU - Shah, N.

AU - Siemaszko, M.

AU - Siudak, R.

AU - Skorodko, T.

AU - Skurzok, M.

AU - Smyrski, J.

AU - Sopov, V.

AU - Stassen, R.

AU - Stepaniak, J.

AU - Stephan, E.

AU - Sterzenbach, G.

AU - Stockhorst, H.

AU - Ströher, H.

AU - Szczurek, A.

AU - Tolba, T.

AU - Trzciński, A.

AU - Varma, R.

AU - Vlasov, P.

AU - Wagner, G. J.

AU - Wȩglorz, W.

AU - Wolke, M.

AU - Wrońska, A.

AU - Wüstner, P.

AU - Wurm, P.

AU - Yamamoto, A.

AU - Yuan, X.

AU - Yurev, L.

AU - Zabierowski, J.

AU - Zheng, C.

AU - Zieliński, M. J.

AU - Zipper, W.

AU - Złomańczuk, J.

AU - Auprański, P.

AU - Aurek, M.

PY - 2013/3/8

Y1 - 2013/3/8

N2 - An exclusive measurement of the excitation function for the dd→3Hepπ- reaction was performed at the Cooler Synchrotron COSY-Jülich with the WASA-at-COSY detection system. The data were taken during a slow acceleration of the beam from 2.185 to 2.400 GeV/c crossing the kinematic threshold for the η-meson production in the dd→4Heη reaction at 2.336 GeV/c. The corresponding excess energy with respect to the 4He-η system varied from -51.4 to 22 MeV. The integrated luminosity in the experiment was determined using the dd→3Hen reaction. The shape of the excitation function for the dd→3Hepπ- reaction was examined. No signal of the 4He-η bound state was observed. An upper limit for the cross section for the bound state formation and decay in the process dd→(4He-η)bound→3Hepπ- was determined on the 90% confidence level and it varies from 20 to 27 nb for the bound state width ranging from 5 to 35 MeV, respectively.

AB - An exclusive measurement of the excitation function for the dd→3Hepπ- reaction was performed at the Cooler Synchrotron COSY-Jülich with the WASA-at-COSY detection system. The data were taken during a slow acceleration of the beam from 2.185 to 2.400 GeV/c crossing the kinematic threshold for the η-meson production in the dd→4Heη reaction at 2.336 GeV/c. The corresponding excess energy with respect to the 4He-η system varied from -51.4 to 22 MeV. The integrated luminosity in the experiment was determined using the dd→3Hen reaction. The shape of the excitation function for the dd→3Hepπ- reaction was examined. No signal of the 4He-η bound state was observed. An upper limit for the cross section for the bound state formation and decay in the process dd→(4He-η)bound→3Hepπ- was determined on the 90% confidence level and it varies from 20 to 27 nb for the bound state width ranging from 5 to 35 MeV, respectively.

UR - http://www.scopus.com/inward/record.url?scp=84875190163&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.87.035204

DO - 10.1103/PhysRevC.87.035204

M3 - Article

AN - SCOPUS:84875190163

SN - 0556-2813

VL - 87

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 3

M1 - 035204

ER -

Search for η-mesic 4He with the WASA-at-COSY detector

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