Near threshold K+K- meson-pair production in proton-proton collisions

Citation
C. Quentmeier et al., Near threshold K+K- meson-pair production in proton-proton collisions, PHYS LETT B, 515(3-4), 2001, pp. 276-282
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
515
Issue
3-4
Year of publication
2001
Pages
276 - 282
Database
ISI
SICI code
0370-2693(20010830)515:3-4<276:NTKMPI>2.0.ZU;2-U
Abstract
The near threshold total cross section and angular distributions of K+K- pa ir production via the reaction pp --> ppK(+)K(-) have been studied at an ex cess energy of Q = 17 MeV using the COSY-11 facility at the cooler synchrot ron COSY. The obtained cross section as well as an upper limit at an excess energy of Q = 3 MeV represent the first measurements on the K+K- productio n in the region of small excess energies where production via the channel p p --> pp Phi --> ppK(+)K(-) is energetically forbidden. The possible influe nce of a resonant production via intermediate scalar states f(0)(980) and a (0)(980) is discussed. (C) 2001 Elsevier Science B.V. All rights reserved.