First exclusive measurements of the K- pp state populated in the pp → K+ Λp reaction at 2.85 GeV

T. Yamazaki, P. Kienle, K. Suzuki, M. Maggiora, M. Alexeev, F. Balestra, Y. Bedfer, R. Bertini, L. C. Bland, A. Brenschede, F. Brochard, M. P. Bussa, M. Chiosso, Seonho Choi, M. L. Colantoni, R. Dressler, Mario Dzemidzic, J. Cl Faivre, L. Ferrero, J. Foryciarz & 18 others I. Fröhlich, V. Frolov, R. Garfagnini, A. Grasso, S. Heinz, W. W. Jacobs, W. Kühn, A. Maggiora, D. Panzieri, H. W. Pfaff, G. Pontecorvo, A. Popov, J. Ritman, P. Salabura, V. Tchalyshev, F. Tosello, S. E. Vigdor, G. Zosi

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We have analyzed data of the DISTO experiment on the exclusive pp → K+ Λp process at Tp = 2.85 GeV to search for a K-pp (≡ X) nuclear bound state to be formed in the pp → K+ + X reaction. The deviation spectra of the K+ missing-mass ΔM (K+) and Λp invariant-mass M(Λp) with selection of large-angle proton emission revealed a structure with MX = 2265 ±2 MeV/c2 and ΓX = 118 ±8 MeV.

Original languageEnglish (US)
Pages (from-to)181-187
Number of pages7
JournalHyperfine Interactions
Volume193
Issue number1-3
DOIs
StatePublished - Aug 28 2009
Externally publishedYes

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Protons
deviation
protons
Experiments
morpholinoanthracycline MX2

Keywords

  • K̄ nuclei
  • Kaon condensation
  • Strange dibaryon
  • Super-strong nuclear force

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this

Yamazaki, T., Kienle, P., Suzuki, K., Maggiora, M., Alexeev, M., Balestra, F., ... Zosi, G. (2009). First exclusive measurements of the K- pp state populated in the pp → K+ Λp reaction at 2.85 GeV. Hyperfine Interactions, 193(1-3), 181-187. https://doi.org/10.1007/s10751-009-9997-5

First exclusive measurements of the K- pp state populated in the pp → K+ Λp reaction at 2.85 GeV. / Yamazaki, T.; Kienle, P.; Suzuki, K.; Maggiora, M.; Alexeev, M.; Balestra, F.; Bedfer, Y.; Bertini, R.; Bland, L. C.; Brenschede, A.; Brochard, F.; Bussa, M. P.; Chiosso, M.; Choi, Seonho; Colantoni, M. L.; Dressler, R.; Dzemidzic, Mario; Faivre, J. Cl; Ferrero, L.; Foryciarz, J.; Fröhlich, I.; Frolov, V.; Garfagnini, R.; Grasso, A.; Heinz, S.; Jacobs, W. W.; Kühn, W.; Maggiora, A.; Panzieri, D.; Pfaff, H. W.; Pontecorvo, G.; Popov, A.; Ritman, J.; Salabura, P.; Tchalyshev, V.; Tosello, F.; Vigdor, S. E.; Zosi, G.

In: Hyperfine Interactions, Vol. 193, No. 1-3, 28.08.2009, p. 181-187.

Research output: Contribution to journalArticle

Yamazaki, T, Kienle, P, Suzuki, K, Maggiora, M, Alexeev, M, Balestra, F, Bedfer, Y, Bertini, R, Bland, LC, Brenschede, A, Brochard, F, Bussa, MP, Chiosso, M, Choi, S, Colantoni, ML, Dressler, R, Dzemidzic, M, Faivre, JC, Ferrero, L, Foryciarz, J, Fröhlich, I, Frolov, V, Garfagnini, R, Grasso, A, Heinz, S, Jacobs, WW, Kühn, W, Maggiora, A, Panzieri, D, Pfaff, HW, Pontecorvo, G, Popov, A, Ritman, J, Salabura, P, Tchalyshev, V, Tosello, F, Vigdor, SE & Zosi, G 2009, 'First exclusive measurements of the K- pp state populated in the pp → K+ Λp reaction at 2.85 GeV', Hyperfine Interactions, vol. 193, no. 1-3, pp. 181-187. https://doi.org/10.1007/s10751-009-9997-5
Yamazaki, T. ; Kienle, P. ; Suzuki, K. ; Maggiora, M. ; Alexeev, M. ; Balestra, F. ; Bedfer, Y. ; Bertini, R. ; Bland, L. C. ; Brenschede, A. ; Brochard, F. ; Bussa, M. P. ; Chiosso, M. ; Choi, Seonho ; Colantoni, M. L. ; Dressler, R. ; Dzemidzic, Mario ; Faivre, J. Cl ; Ferrero, L. ; Foryciarz, J. ; Fröhlich, I. ; Frolov, V. ; Garfagnini, R. ; Grasso, A. ; Heinz, S. ; Jacobs, W. W. ; Kühn, W. ; Maggiora, A. ; Panzieri, D. ; Pfaff, H. W. ; Pontecorvo, G. ; Popov, A. ; Ritman, J. ; Salabura, P. ; Tchalyshev, V. ; Tosello, F. ; Vigdor, S. E. ; Zosi, G. / First exclusive measurements of the K- pp state populated in the pp → K+ Λp reaction at 2.85 GeV. In: Hyperfine Interactions. 2009 ; Vol. 193, No. 1-3. pp. 181-187.
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T1 - First exclusive measurements of the K- pp state populated in the pp → K+ Λp reaction at 2.85 GeV

AU - Yamazaki, T.

AU - Kienle, P.

AU - Suzuki, K.

AU - Maggiora, M.

AU - Alexeev, M.

AU - Balestra, F.

AU - Bedfer, Y.

AU - Bertini, R.

AU - Bland, L. C.

AU - Brenschede, A.

AU - Brochard, F.

AU - Bussa, M. P.

AU - Chiosso, M.

AU - Choi, Seonho

AU - Colantoni, M. L.

AU - Dressler, R.

AU - Dzemidzic, Mario

AU - Faivre, J. Cl

AU - Ferrero, L.

AU - Foryciarz, J.

AU - Fröhlich, I.

AU - Frolov, V.

AU - Garfagnini, R.

AU - Grasso, A.

AU - Heinz, S.

AU - Jacobs, W. W.

AU - Kühn, W.

AU - Maggiora, A.

AU - Panzieri, D.

AU - Pfaff, H. W.

AU - Pontecorvo, G.

AU - Popov, A.

AU - Ritman, J.

AU - Salabura, P.

AU - Tchalyshev, V.

AU - Tosello, F.

AU - Vigdor, S. E.

AU - Zosi, G.

PY - 2009/8/28

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N2 - We have analyzed data of the DISTO experiment on the exclusive pp → K+ Λp process at Tp = 2.85 GeV to search for a K-pp (≡ X) nuclear bound state to be formed in the pp → K+ + X reaction. The deviation spectra of the K+ missing-mass ΔM (K+) and Λp invariant-mass M(Λp) with selection of large-angle proton emission revealed a structure with MX = 2265 ±2 MeV/c2 and ΓX = 118 ±8 MeV.

AB - We have analyzed data of the DISTO experiment on the exclusive pp → K+ Λp process at Tp = 2.85 GeV to search for a K-pp (≡ X) nuclear bound state to be formed in the pp → K+ + X reaction. The deviation spectra of the K+ missing-mass ΔM (K+) and Λp invariant-mass M(Λp) with selection of large-angle proton emission revealed a structure with MX = 2265 ±2 MeV/c2 and ΓX = 118 ±8 MeV.

KW - K̄ nuclei

KW - Kaon condensation

KW - Strange dibaryon

KW - Super-strong nuclear force

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