ISSN:
1434-6052
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract We study single and double inclusive diffractive production in a 32 GeV/c K + p experiment in MIRABELLE at the Serpukhov accelerator. From reactionsK + p→K ++X + andK + p→X ++p we determine the total proton and kaon single diffractive dissociation cross sections $$\sigma (p\xrightarrow{{K^ + }}p_D ) = 0.90 \pm 0.12 mb$$ and $$\sigma (K^ + \xrightarrow{p}K_D^ + ) = 0$$ . 90±0.17 mb, respectively. In either case the only notable contributions come from dissociations into 1 and 3 charged particles. Kaon dissociation exhibits a pronounced slope-mass correlation. The search for double diffractive production in reactionsK + p→(K +π−π+)+X + andK + p→(pπ + π −)+X + leads in either case to an estimated total double diffractive cross section σ(K +p→K D + pD) of ≅220 μb. The double dissociation differential cross section exhibits a large slope of ≅10GeV−2 in the nearthreshold mass region, rapidly decreasing to ≅4 GeV−2 with increasing excitation mass. At our c.m. energy $$(\sqrt s \simeq 8 GeV)$$ the ratio σinel dif/σel is 0.85±0.10, the total diffractive cross section σdif≡σel+σinel dif=4.41±0.24 mb and the fraction σdif(K + p)/σtot(K + p) is 25±2%. TheK + andK − diffractive excitation mass spectra, differential cross sections and total diffractive cross sections are very similar for both single and double dissociations.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01576191
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