Indication of a deeply bound and compact K-pp state formed in the pp→pΛK+ reaction at 2.85 GeV

T. Yamazaki; M. Maggiora; P. Kienle; K. Suzuki; A. Amoroso; M. Alexeev; F. Balestra; Y. Bedfer; R. Bertini; L. C. Bland; A. Brenschede; F. Brochard; M. P. Bussa; Seonho Choi; M. L. Colantoni; R. Dressler; M. Dzemidzic; J. Cl Faivre; L. Ferrero; J. Foryciarz; 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; S. Sosio; V. Tchalyshev; S. E. Vigdor

doi:10.1103/PhysRevLett.104.132502

Indication of a deeply bound and compact K^-pp state formed in the pp→pΛK⁺ reaction at 2.85 GeV

T. Yamazaki, M. Maggiora, P. Kienle, K. Suzuki, A. Amoroso, M. Alexeev, F. Balestra, Y. Bedfer, R. Bertini, L. C. Bland, A. Brenschede, F. Brochard, M. P. Bussa, Seonho Choi, M. L. Colantoni, R. Dressler, M. Dzemidzic, J. Cl Faivre, L. Ferrero, J. ForyciarzI. 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, S. Sosio, V. Tchalyshev, S. E. Vigdor

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Abstract

We have analyzed data of the DISTO experiment on the exclusive pp→pΛK⁺ reaction at 2.85 GeV to search for a strongly bound compact K^-pp(X) state to be formed in the pp→K ⁺+X reaction. The observed spectra of the K⁺ missing mass and the pΛ invariant-mass with high transverse momenta of p and K ⁺ revealed a broad distinct peak of 26-σ confidence with a mass MX=2267±3(stat)±5(syst)MeV/c2 and a width ΓX= 118±8(stat)±10(syst)MeV. The enormously large cross section indicates formation of a compact K^-pp with a large binding energy of BK=103MeV, which can be a possible gateway toward cold and dense kaonic nuclear matter.

Original language	English
Article number	132502
Journal	Physical Review Letters
Volume	104
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.104.132502
Publication status	Published - 1 Apr 2010
Externally published	Yes

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Yamazaki, T., Maggiora, M., Kienle, P., Suzuki, K., Amoroso, A., Alexeev, M., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, S., Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J. C., Ferrero, L., ... Vigdor, S. E. (2010). Indication of a deeply bound and compact K^-pp state formed in the pp→pΛK⁺ reaction at 2.85 GeV. Physical Review Letters, 104(13), Article 132502. https://doi.org/10.1103/PhysRevLett.104.132502

@article{59081cbf4b264dbaa3f3da321947e399,

title = "Indication of a deeply bound and compact K-pp state formed in the pp→pΛK+ reaction at 2.85 GeV",

abstract = "We have analyzed data of the DISTO experiment on the exclusive pp→pΛK+ reaction at 2.85 GeV to search for a strongly bound compact K-pp(X) state to be formed in the pp→K ++X reaction. The observed spectra of the K+ missing mass and the pΛ invariant-mass with high transverse momenta of p and K + revealed a broad distinct peak of 26-σ confidence with a mass MX=2267±3(stat)±5(syst)MeV/c2 and a width ΓX= 118±8(stat)±10(syst)MeV. The enormously large cross section indicates formation of a compact K-pp with a large binding energy of BK=103MeV, which can be a possible gateway toward cold and dense kaonic nuclear matter.",

author = "T. Yamazaki and M. Maggiora and P. Kienle and K. Suzuki and A. Amoroso and M. Alexeev and F. Balestra and Y. Bedfer and R. Bertini and Bland, {L. C.} and A. Brenschede and F. Brochard and Bussa, {M. P.} and Seonho Choi and Colantoni, {M. L.} and R. Dressler and M. Dzemidzic and Faivre, {J. Cl} and L. Ferrero and J. Foryciarz and I. Fr{\"o}hlich and V. Frolov and R. Garfagnini and A. Grasso and S. Heinz and Jacobs, {W. W.} and W. K{\"u}hn and A. Maggiora and D. Panzieri and Pfaff, {H. W.} and G. Pontecorvo and A. Popov and J. Ritman and P. Salabura and S. Sosio and V. Tchalyshev and Vigdor, {S. E.}",

year = "2010",

month = apr,

day = "1",

doi = "10.1103/PhysRevLett.104.132502",

language = "English",

volume = "104",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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Yamazaki, T, Maggiora, M, Kienle, P, Suzuki, K, Amoroso, A, Alexeev, M, Balestra, F, Bedfer, Y, Bertini, R, Bland, LC, Brenschede, A, Brochard, F, Bussa, MP, 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, Sosio, S, Tchalyshev, V & Vigdor, SE 2010, 'Indication of a deeply bound and compact K^-pp state formed in the pp→pΛK⁺ reaction at 2.85 GeV', Physical Review Letters, vol. 104, no. 13, 132502. https://doi.org/10.1103/PhysRevLett.104.132502

TY - JOUR

T1 - Indication of a deeply bound and compact K-pp state formed in the pp→pΛK+ reaction at 2.85 GeV

AU - Yamazaki, T.

AU - Maggiora, M.

AU - Kienle, P.

AU - Suzuki, K.

AU - Amoroso, A.

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 - Choi, Seonho

AU - Colantoni, M. L.

AU - Dressler, R.

AU - Dzemidzic, M.

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 - Sosio, S.

AU - Tchalyshev, V.

AU - Vigdor, S. E.

PY - 2010/4/1

Y1 - 2010/4/1

N2 - We have analyzed data of the DISTO experiment on the exclusive pp→pΛK+ reaction at 2.85 GeV to search for a strongly bound compact K-pp(X) state to be formed in the pp→K ++X reaction. The observed spectra of the K+ missing mass and the pΛ invariant-mass with high transverse momenta of p and K + revealed a broad distinct peak of 26-σ confidence with a mass MX=2267±3(stat)±5(syst)MeV/c2 and a width ΓX= 118±8(stat)±10(syst)MeV. The enormously large cross section indicates formation of a compact K-pp with a large binding energy of BK=103MeV, which can be a possible gateway toward cold and dense kaonic nuclear matter.

AB - We have analyzed data of the DISTO experiment on the exclusive pp→pΛK+ reaction at 2.85 GeV to search for a strongly bound compact K-pp(X) state to be formed in the pp→K ++X reaction. The observed spectra of the K+ missing mass and the pΛ invariant-mass with high transverse momenta of p and K + revealed a broad distinct peak of 26-σ confidence with a mass MX=2267±3(stat)±5(syst)MeV/c2 and a width ΓX= 118±8(stat)±10(syst)MeV. The enormously large cross section indicates formation of a compact K-pp with a large binding energy of BK=103MeV, which can be a possible gateway toward cold and dense kaonic nuclear matter.

UR - http://www.scopus.com/inward/record.url?scp=77950413433&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.104.132502

DO - 10.1103/PhysRevLett.104.132502

M3 - Article

SN - 0031-9007

VL - 104

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

M1 - 132502

ER -

Indication of a deeply bound and compact K^-pp state formed in the pp→pΛK⁺ reaction at 2.85 GeV

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