Abstract
We have analyzed data of the DISTO experiment on the exclusive pp → K + Λp process at T p = 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 M X = 2265 ±2 MeV/c 2 and Γ X = 118 ±8 MeV.
Similar content being viewed by others
References
Akaishi, Y., Yamazaki, T.: Phys. Rev. C 65, 044005 (2002)
Yamazaki, T., Akaishi, Y.: Phys. Lett. B 535, 70 (2002)
Yamazaki, T., Akaishi, Y.: Proc. Jpn Acad. B 83, 144 (2007) ArXiv:0706.3651v2
Yamazaki, T., Akaishi, Y.: Phys. Rev. C 76, 045201 (2007)
Shevchenko, N.V., Gal, A., Mares, J.: Phys. Rev. Lett. 98, 082301 (2007)
Shevchenko, N.V., Gal, A., Mares, J., Révai, J.: Phys. Rev. C 76 044004 (2007)
Ikeda, Y., Sato, T.: Phy. Rev. C 76, 035203 (2007)
Jido, D., Oller, J.A., Oset, E., Ramos, A., Meissner, U.-G.: Nucl. Phys. A725, 181 (2003)
Magas, V.K, Oset, E., Ramos, A.: Phys. Rev. Lett. 95, 052301 (2005)
Hyodo, T., Weise, W.: Phys. Rev. C77, 035204 (2008)
Doté, A., Hyodo, T., Weise, W.: Phys. Rev. C79, 014003 (2009)
Agnello, M., et al.: Phys. Rev. Lett. 94, 212303 (2005)
Balestra, F., et al.: Nucl. Instr. Meth. 426, 385 (1999)
Maggiora, M., et al.: Nucl. Phys. A691, 329c (2001)
Wycech, S., Green, A.M.: arXiv:0808.3329 [nucl-th]
Akaishi, Y., Myint, K.S., Yamazaki, T.: Proc. Jpn. Acad., Series B, 84, 264 (2008)
Ivanov, A.N., Kienle, P., Marton, J.: (2009, in press)
Author information
Authors and Affiliations
Consortia
Corresponding author
Rights and permissions
About this article
Cite this article
Yamazaki, T., Kienle, P., Suzuki, K. et al. First exclusive measurements of the K − pp state populated in the pp → K + Λp reaction at 2.85 GeV. Hyperfine Interact 193, 181–187 (2009). https://doi.org/10.1007/s10751-009-9997-5
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10751-009-9997-5