Indication of an onset of hard-like effects in K+p, π+p and pp collisions at 250 GeV/c EHS/NA22 Collaboration Aachen-Antwerp/Brussel-Berlin (Zeuthen)-Helsinki-Cracow-Moscow-Nijmegen-Rio de Janeiro- Serpukhov-Warsaw-Yerevan
Abstract
Similarly as in lepton-hadron scattering, but less pronounced than in e+e- annihilation at comparable energies, we observe a rise of the ``sea-gull'' wings with CMS energy. The large average transverse momenta around Feynman xF=0.4 are mainly due to high multiplicity events, for which also a tail develops in the multiplicity distribution. Neither of these effects can be reproduced by currently used low-pT fragmentation models.
Partially funded by the German Federal Minister for Research and Technology (BMFT) under contract number 053AC41P.- Publication:
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Physics Letters B
- Pub Date:
- October 1987
- DOI:
- 10.1016/0370-2693(87)90420-5
- Bibcode:
- 1987PhLB..197..457A