Atomic-Mass Dependence of the Transverse-Momentum Distribution of Massive Muon Pairs from 225-GeV/c π--Nucleus Collisions
Abstract
We have measured the atomic-mass dependence of the PT distribution of massive muon pairs produced in 225-GeV/c π--nucleus collisions at Fermilab. We find that <P2T> is consistent with being independent of the atomic mass A, with the value of 1.69+/-0.10 (GeV/c)2 for muon pairs of mass between 4.0 and 8.5 GeV/c2. When the dependence of <P2T> on A is parametrized as <P2T>=a+bA13, we find that b=-0.079+/-0.073 (GeV/c)2 which corresponds to an upper limit of 0.015 (GeV/c)2 at the 90% confidence level.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 1984
- DOI:
- 10.1103/PhysRevLett.53.32
- Bibcode:
- 1984PhRvL..53...32S
- Keywords:
-
- 13.85.Qk;
- Inclusive production with identified leptons photons or other nonhadronic particles