Branching ratios for p̄ p annihilation at rest into two-body final states

A. Abele, J. Adomeit, C. Amsler, C. A. Baker, B. M. Barnett, C. J. Batty, M. Benayoun, S. Bischoff, P. Blüm, K. Braune, D. V. Bugg, T. Case, K. M. Crowe, T. Degener, M. Doser, W. Dünnweber, D. Engelhardt, M. A. Faessler, P. Giarritta, R. P. HaddockF. H. Heinsius, M. Heinzelmann, A. Herbstrith, M. Herz, N. P. Hessey, P. Hidas, C. Hodd, C. Holtzhaußen, D. Jamnik, H. Kalinowsky, P. Kammel, J. Kisiel, E. Klempt, H. Koch, M. Kunze, U. Kurilla, M. Lakata, R. Landua, H. Matthäy, R. McCrady, J. Meier, C. A. Meyer, L. Montanet, R. Ouared, K. Peters, B. Pick, M. Ratajczak, C. Regenfus, W. Roethel, S. Spanier, H. Stöck, C. Straßburger, U. Strohbusch, M. Suffert, J. S. Suh, U. Thoma, M. Tischhäuser, I. Uman, C. Völcker, S. Wallis-Plachner, D. Walther, U. Wiedner, K. Wittmack, B. S. Zou

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Measurements of two-body branching ratios for p̄p annihilations at rest in liquid and gaseous (12ρSTP) hydrogen are reported. Channels studied are p̄p→π0π00η, K0SK0L, K+K-. The branching ratio for the π0π0 channel in liquid H2 is measured to be (6.14±0.40)×10-4. The results are compared with those from other experiments. The fraction of P-state annihilation for a range of target densities from 0.002ρSTP to liquid H2 is determined. Values obtained include 0.11±0.02 in liquid H2 and 0.48±0.04 in 12ρSTP H2 gas.

Original languageEnglish
Pages (from-to)563-576
Number of pages14
JournalNuclear Physics A
Volume679
Issue number3-4
DOIs
Publication statusPublished - Jan 1 2001

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liquids
hydrogen
gases

Keywords

  • 13.75.Cs
  • 13.85.Ni
  • 36.10.Gv
  • Antiproton annihilation
  • Branching ratios
  • Protonium cascade
  • Two-body meson production

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Abele, A., Adomeit, J., Amsler, C., Baker, C. A., Barnett, B. M., Batty, C. J., ... Zou, B. S. (2001). Branching ratios for p̄ p annihilation at rest into two-body final states. Nuclear Physics A, 679(3-4), 563-576. https://doi.org/10.1016/S0375-9474(00)00361-4

Branching ratios for p̄ p annihilation at rest into two-body final states. / Abele, A.; Adomeit, J.; Amsler, C.; Baker, C. A.; Barnett, B. M.; Batty, C. J.; Benayoun, M.; Bischoff, S.; Blüm, P.; Braune, K.; Bugg, D. V.; Case, T.; Crowe, K. M.; Degener, T.; Doser, M.; Dünnweber, W.; Engelhardt, D.; Faessler, M. A.; Giarritta, P.; Haddock, R. P.; Heinsius, F. H.; Heinzelmann, M.; Herbstrith, A.; Herz, M.; Hessey, N. P.; Hidas, P.; Hodd, C.; Holtzhaußen, C.; Jamnik, D.; Kalinowsky, H.; Kammel, P.; Kisiel, J.; Klempt, E.; Koch, H.; Kunze, M.; Kurilla, U.; Lakata, M.; Landua, R.; Matthäy, H.; McCrady, R.; Meier, J.; Meyer, C. A.; Montanet, L.; Ouared, R.; Peters, K.; Pick, B.; Ratajczak, M.; Regenfus, C.; Roethel, W.; Spanier, S.; Stöck, H.; Straßburger, C.; Strohbusch, U.; Suffert, M.; Suh, J. S.; Thoma, U.; Tischhäuser, M.; Uman, I.; Völcker, C.; Wallis-Plachner, S.; Walther, D.; Wiedner, U.; Wittmack, K.; Zou, B. S.

In: Nuclear Physics A, Vol. 679, No. 3-4, 01.01.2001, p. 563-576.

Research output: Contribution to journalArticle

Abele, A, Adomeit, J, Amsler, C, Baker, CA, Barnett, BM, Batty, CJ, Benayoun, M, Bischoff, S, Blüm, P, Braune, K, Bugg, DV, Case, T, Crowe, KM, Degener, T, Doser, M, Dünnweber, W, Engelhardt, D, Faessler, MA, Giarritta, P, Haddock, RP, Heinsius, FH, Heinzelmann, M, Herbstrith, A, Herz, M, Hessey, NP, Hidas, P, Hodd, C, Holtzhaußen, C, Jamnik, D, Kalinowsky, H, Kammel, P, Kisiel, J, Klempt, E, Koch, H, Kunze, M, Kurilla, U, Lakata, M, Landua, R, Matthäy, H, McCrady, R, Meier, J, Meyer, CA, Montanet, L, Ouared, R, Peters, K, Pick, B, Ratajczak, M, Regenfus, C, Roethel, W, Spanier, S, Stöck, H, Straßburger, C, Strohbusch, U, Suffert, M, Suh, JS, Thoma, U, Tischhäuser, M, Uman, I, Völcker, C, Wallis-Plachner, S, Walther, D, Wiedner, U, Wittmack, K & Zou, BS 2001, 'Branching ratios for p̄ p annihilation at rest into two-body final states', Nuclear Physics A, vol. 679, no. 3-4, pp. 563-576. https://doi.org/10.1016/S0375-9474(00)00361-4
Abele A, Adomeit J, Amsler C, Baker CA, Barnett BM, Batty CJ et al. Branching ratios for p̄ p annihilation at rest into two-body final states. Nuclear Physics A. 2001 Jan 1;679(3-4):563-576. https://doi.org/10.1016/S0375-9474(00)00361-4
Abele, A. ; Adomeit, J. ; Amsler, C. ; Baker, C. A. ; Barnett, B. M. ; Batty, C. J. ; Benayoun, M. ; Bischoff, S. ; Blüm, P. ; Braune, K. ; Bugg, D. V. ; Case, T. ; Crowe, K. M. ; Degener, T. ; Doser, M. ; Dünnweber, W. ; Engelhardt, D. ; Faessler, M. A. ; Giarritta, P. ; Haddock, R. P. ; Heinsius, F. H. ; Heinzelmann, M. ; Herbstrith, A. ; Herz, M. ; Hessey, N. P. ; Hidas, P. ; Hodd, C. ; Holtzhaußen, C. ; Jamnik, D. ; Kalinowsky, H. ; Kammel, P. ; Kisiel, J. ; Klempt, E. ; Koch, H. ; Kunze, M. ; Kurilla, U. ; Lakata, M. ; Landua, R. ; Matthäy, H. ; McCrady, R. ; Meier, J. ; Meyer, C. A. ; Montanet, L. ; Ouared, R. ; Peters, K. ; Pick, B. ; Ratajczak, M. ; Regenfus, C. ; Roethel, W. ; Spanier, S. ; Stöck, H. ; Straßburger, C. ; Strohbusch, U. ; Suffert, M. ; Suh, J. S. ; Thoma, U. ; Tischhäuser, M. ; Uman, I. ; Völcker, C. ; Wallis-Plachner, S. ; Walther, D. ; Wiedner, U. ; Wittmack, K. ; Zou, B. S. / Branching ratios for p̄ p annihilation at rest into two-body final states. In: Nuclear Physics A. 2001 ; Vol. 679, No. 3-4. pp. 563-576.
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abstract = "Measurements of two-body branching ratios for p̄p annihilations at rest in liquid and gaseous (12ρSTP) hydrogen are reported. Channels studied are p̄p→π0π0,π0η, K0SK0L, K+K-. The branching ratio for the π0π0 channel in liquid H2 is measured to be (6.14±0.40)×10-4. The results are compared with those from other experiments. The fraction of P-state annihilation for a range of target densities from 0.002ρSTP to liquid H2 is determined. Values obtained include 0.11±0.02 in liquid H2 and 0.48±0.04 in 12ρSTP H2 gas.",
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TY - JOUR

T1 - Branching ratios for p̄ p annihilation at rest into two-body final states

AU - Abele, A.

AU - Adomeit, J.

AU - Amsler, C.

AU - Baker, C. A.

AU - Barnett, B. M.

AU - Batty, C. J.

AU - Benayoun, M.

AU - Bischoff, S.

AU - Blüm, P.

AU - Braune, K.

AU - Bugg, D. V.

AU - Case, T.

AU - Crowe, K. M.

AU - Degener, T.

AU - Doser, M.

AU - Dünnweber, W.

AU - Engelhardt, D.

AU - Faessler, M. A.

AU - Giarritta, P.

AU - Haddock, R. P.

AU - Heinsius, F. H.

AU - Heinzelmann, M.

AU - Herbstrith, A.

AU - Herz, M.

AU - Hessey, N. P.

AU - Hidas, P.

AU - Hodd, C.

AU - Holtzhaußen, C.

AU - Jamnik, D.

AU - Kalinowsky, H.

AU - Kammel, P.

AU - Kisiel, J.

AU - Klempt, E.

AU - Koch, H.

AU - Kunze, M.

AU - Kurilla, U.

AU - Lakata, M.

AU - Landua, R.

AU - Matthäy, H.

AU - McCrady, R.

AU - Meier, J.

AU - Meyer, C. A.

AU - Montanet, L.

AU - Ouared, R.

AU - Peters, K.

AU - Pick, B.

AU - Ratajczak, M.

AU - Regenfus, C.

AU - Roethel, W.

AU - Spanier, S.

AU - Stöck, H.

AU - Straßburger, C.

AU - Strohbusch, U.

AU - Suffert, M.

AU - Suh, J. S.

AU - Thoma, U.

AU - Tischhäuser, M.

AU - Uman, I.

AU - Völcker, C.

AU - Wallis-Plachner, S.

AU - Walther, D.

AU - Wiedner, U.

AU - Wittmack, K.

AU - Zou, B. S.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Measurements of two-body branching ratios for p̄p annihilations at rest in liquid and gaseous (12ρSTP) hydrogen are reported. Channels studied are p̄p→π0π0,π0η, K0SK0L, K+K-. The branching ratio for the π0π0 channel in liquid H2 is measured to be (6.14±0.40)×10-4. The results are compared with those from other experiments. The fraction of P-state annihilation for a range of target densities from 0.002ρSTP to liquid H2 is determined. Values obtained include 0.11±0.02 in liquid H2 and 0.48±0.04 in 12ρSTP H2 gas.

AB - Measurements of two-body branching ratios for p̄p annihilations at rest in liquid and gaseous (12ρSTP) hydrogen are reported. Channels studied are p̄p→π0π0,π0η, K0SK0L, K+K-. The branching ratio for the π0π0 channel in liquid H2 is measured to be (6.14±0.40)×10-4. The results are compared with those from other experiments. The fraction of P-state annihilation for a range of target densities from 0.002ρSTP to liquid H2 is determined. Values obtained include 0.11±0.02 in liquid H2 and 0.48±0.04 in 12ρSTP H2 gas.

KW - 13.75.Cs

KW - 13.85.Ni

KW - 36.10.Gv

KW - Antiproton annihilation

KW - Branching ratios

KW - Protonium cascade

KW - Two-body meson production

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U2 - 10.1016/S0375-9474(00)00361-4

DO - 10.1016/S0375-9474(00)00361-4

M3 - Article

AN - SCOPUS:0035218149

VL - 679

SP - 563

EP - 576

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 3-4

ER -