Observation of a 2+ + resonance at 1515 MeV in proton-antiproton annihilations into 3π0

E. Aker, C. Amsler, I. Augustin, C. A. Baker, B. M. Barnett, C. J. Batty, R. Beckmann, P. Birien, J. Bistirlich, P. Blüm, R. Bossingham, H. Bossy, K. Braune, M. Burchell, T. Case, S. Cierjacks, K. M. Crowe, K. Dederichs, W. Dünnweber, D. EngelhardtM. A. Faessler, C. Felix, G. Folger, R. Haddock, F. H. Heinsius, N. P. Hessey, P. Hidas, P. Illinger, D. Jamnik, H. Kalinowsky, B. Kämmle, T. Kiel, E. Klempt, H. Koch, K. Königsmann, M. Kunze, R. Landua, B. Lewendel, H. Matthaey, M. Merkel, C. A. Meyer, U. Meyer-Berkhout, L. Montanet, C. Pegel, K. Peters, S. Ravndal, A. H. Sanjari, E. Schäfer, B. Schmid, W. Schott, U. Strohbusch, M. Suffert, C. Sutton, D. Urner, D. Walther, S. Walther, U. Wiedner, N. Winter, J. Zoll, C. Zupancic

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Abstract

Antiproton-proton annihilations at rest into 3π0 are analyzed in terms of π0π0 final state interactions. A JPC = 2+ + resonance at a mass of 1515 ± 10 MeV with a width of 120 ± 10 MeV is required to explain the data. This result is supported by previous observations made on the ππ system in pp and pn annihilations which show that the resonance has I = 0. This resonance is practically degenerate in mass with the f′2 (1525) but the two resonances have very different production and decay characteristics.

Original languageEnglish
Pages (from-to)249-258
Number of pages10
JournalPhysics Letters B
Volume260
Issue number1-2
DOIs
Publication statusPublished - May 9 1991

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antiprotons
protons
decay
interactions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Aker, E., Amsler, C., Augustin, I., Baker, C. A., Barnett, B. M., Batty, C. J., ... Zupancic, C. (1991). Observation of a 2+ + resonance at 1515 MeV in proton-antiproton annihilations into 3π0. Physics Letters B, 260(1-2), 249-258. https://doi.org/10.1016/0370-2693(91)90999-7

Observation of a 2+ + resonance at 1515 MeV in proton-antiproton annihilations into 3π0. / Aker, E.; Amsler, C.; Augustin, I.; Baker, C. A.; Barnett, B. M.; Batty, C. J.; Beckmann, R.; Birien, P.; Bistirlich, J.; Blüm, P.; Bossingham, R.; Bossy, H.; Braune, K.; Burchell, M.; Case, T.; Cierjacks, S.; Crowe, K. M.; Dederichs, K.; Dünnweber, W.; Engelhardt, D.; Faessler, M. A.; Felix, C.; Folger, G.; Haddock, R.; Heinsius, F. H.; Hessey, N. P.; Hidas, P.; Illinger, P.; Jamnik, D.; Kalinowsky, H.; Kämmle, B.; Kiel, T.; Klempt, E.; Koch, H.; Königsmann, K.; Kunze, M.; Landua, R.; Lewendel, B.; Matthaey, H.; Merkel, M.; Meyer, C. A.; Meyer-Berkhout, U.; Montanet, L.; Pegel, C.; Peters, K.; Ravndal, S.; Sanjari, A. H.; Schäfer, E.; Schmid, B.; Schott, W.; Strohbusch, U.; Suffert, M.; Sutton, C.; Urner, D.; Walther, D.; Walther, S.; Wiedner, U.; Winter, N.; Zoll, J.; Zupancic, C.

In: Physics Letters B, Vol. 260, No. 1-2, 09.05.1991, p. 249-258.

Research output: Contribution to journalArticle

Aker, E, Amsler, C, Augustin, I, Baker, CA, Barnett, BM, Batty, CJ, Beckmann, R, Birien, P, Bistirlich, J, Blüm, P, Bossingham, R, Bossy, H, Braune, K, Burchell, M, Case, T, Cierjacks, S, Crowe, KM, Dederichs, K, Dünnweber, W, Engelhardt, D, Faessler, MA, Felix, C, Folger, G, Haddock, R, Heinsius, FH, Hessey, NP, Hidas, P, Illinger, P, Jamnik, D, Kalinowsky, H, Kämmle, B, Kiel, T, Klempt, E, Koch, H, Königsmann, K, Kunze, M, Landua, R, Lewendel, B, Matthaey, H, Merkel, M, Meyer, CA, Meyer-Berkhout, U, Montanet, L, Pegel, C, Peters, K, Ravndal, S, Sanjari, AH, Schäfer, E, Schmid, B, Schott, W, Strohbusch, U, Suffert, M, Sutton, C, Urner, D, Walther, D, Walther, S, Wiedner, U, Winter, N, Zoll, J & Zupancic, C 1991, 'Observation of a 2+ + resonance at 1515 MeV in proton-antiproton annihilations into 3π0', Physics Letters B, vol. 260, no. 1-2, pp. 249-258. https://doi.org/10.1016/0370-2693(91)90999-7
Aker E, Amsler C, Augustin I, Baker CA, Barnett BM, Batty CJ et al. Observation of a 2+ + resonance at 1515 MeV in proton-antiproton annihilations into 3π0. Physics Letters B. 1991 May 9;260(1-2):249-258. https://doi.org/10.1016/0370-2693(91)90999-7
Aker, E. ; Amsler, C. ; Augustin, I. ; Baker, C. A. ; Barnett, B. M. ; Batty, C. J. ; Beckmann, R. ; Birien, P. ; Bistirlich, J. ; Blüm, P. ; Bossingham, R. ; Bossy, H. ; Braune, K. ; Burchell, M. ; Case, T. ; Cierjacks, S. ; Crowe, K. M. ; Dederichs, K. ; Dünnweber, W. ; Engelhardt, D. ; Faessler, M. A. ; Felix, C. ; Folger, G. ; Haddock, R. ; Heinsius, F. H. ; Hessey, N. P. ; Hidas, P. ; Illinger, P. ; Jamnik, D. ; Kalinowsky, H. ; Kämmle, B. ; Kiel, T. ; Klempt, E. ; Koch, H. ; Königsmann, K. ; Kunze, M. ; Landua, R. ; Lewendel, B. ; Matthaey, H. ; Merkel, M. ; Meyer, C. A. ; Meyer-Berkhout, U. ; Montanet, L. ; Pegel, C. ; Peters, K. ; Ravndal, S. ; Sanjari, A. H. ; Schäfer, E. ; Schmid, B. ; Schott, W. ; Strohbusch, U. ; Suffert, M. ; Sutton, C. ; Urner, D. ; Walther, D. ; Walther, S. ; Wiedner, U. ; Winter, N. ; Zoll, J. ; Zupancic, C. / Observation of a 2+ + resonance at 1515 MeV in proton-antiproton annihilations into 3π0. In: Physics Letters B. 1991 ; Vol. 260, No. 1-2. pp. 249-258.
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abstract = "Antiproton-proton annihilations at rest into 3π0 are analyzed in terms of π0π0 final state interactions. A JPC = 2+ + resonance at a mass of 1515 ± 10 MeV with a width of 120 ± 10 MeV is required to explain the data. This result is supported by previous observations made on the ππ system in pp and pn annihilations which show that the resonance has I = 0. This resonance is practically degenerate in mass with the f′2 (1525) but the two resonances have very different production and decay characteristics.",
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T1 - Observation of a 2+ + resonance at 1515 MeV in proton-antiproton annihilations into 3π0

AU - Aker, E.

AU - Amsler, C.

AU - Augustin, I.

AU - Baker, C. A.

AU - Barnett, B. M.

AU - Batty, C. J.

AU - Beckmann, R.

AU - Birien, P.

AU - Bistirlich, J.

AU - Blüm, P.

AU - Bossingham, R.

AU - Bossy, H.

AU - Braune, K.

AU - Burchell, M.

AU - Case, T.

AU - Cierjacks, S.

AU - Crowe, K. M.

AU - Dederichs, K.

AU - Dünnweber, W.

AU - Engelhardt, D.

AU - Faessler, M. A.

AU - Felix, C.

AU - Folger, G.

AU - Haddock, R.

AU - Heinsius, F. H.

AU - Hessey, N. P.

AU - Hidas, P.

AU - Illinger, P.

AU - Jamnik, D.

AU - Kalinowsky, H.

AU - Kämmle, B.

AU - Kiel, T.

AU - Klempt, E.

AU - Koch, H.

AU - Königsmann, K.

AU - Kunze, M.

AU - Landua, R.

AU - Lewendel, B.

AU - Matthaey, H.

AU - Merkel, M.

AU - Meyer, C. A.

AU - Meyer-Berkhout, U.

AU - Montanet, L.

AU - Pegel, C.

AU - Peters, K.

AU - Ravndal, S.

AU - Sanjari, A. H.

AU - Schäfer, E.

AU - Schmid, B.

AU - Schott, W.

AU - Strohbusch, U.

AU - Suffert, M.

AU - Sutton, C.

AU - Urner, D.

AU - Walther, D.

AU - Walther, S.

AU - Wiedner, U.

AU - Winter, N.

AU - Zoll, J.

AU - Zupancic, C.

PY - 1991/5/9

Y1 - 1991/5/9

N2 - Antiproton-proton annihilations at rest into 3π0 are analyzed in terms of π0π0 final state interactions. A JPC = 2+ + resonance at a mass of 1515 ± 10 MeV with a width of 120 ± 10 MeV is required to explain the data. This result is supported by previous observations made on the ππ system in pp and pn annihilations which show that the resonance has I = 0. This resonance is practically degenerate in mass with the f′2 (1525) but the two resonances have very different production and decay characteristics.

AB - Antiproton-proton annihilations at rest into 3π0 are analyzed in terms of π0π0 final state interactions. A JPC = 2+ + resonance at a mass of 1515 ± 10 MeV with a width of 120 ± 10 MeV is required to explain the data. This result is supported by previous observations made on the ππ system in pp and pn annihilations which show that the resonance has I = 0. This resonance is practically degenerate in mass with the f′2 (1525) but the two resonances have very different production and decay characteristics.

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