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Transverse momentum broadening of hadrons produced in semi-inclusive deep-inelastic scattering on nuclei
- Source :
- PHYSICS LETTERS B, Physics letters / B 684, 114-118 (2010). doi:10.1016/j.physletb.2010.01.020
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- The first direct measurement of the dependence on target nuclear mass of the average squared transverse momentum of pi+, pi-, and K+ mesons from deep-inelastic lepton scattering is obtained as a function of several kinematic variables. The data were accumulated at the HERMES experiment at DESY, in which the HERA 27.6 GeV lepton beam was scattered off several nuclear gas targets. The average squared transverse momentum was clearly observed to increase with atomic mass number. The effect increases as a function of Q**2 and x and remains constant as a function of both the virtual photon energy nu and the fractional hadron energy z, except that it vanishes as z approaches unity.<br />Comment: 6 pages, 2 figures
- Subjects :
- HERMES experiment
Nuclear and High Energy Physics
Particle physics
Meson
DEUTERIUM
Hadron
FOS: Physical sciences
Virtual particle
7. Clean energy
01 natural sciences
High Energy Physics - Experiment
Nuclear physics
High Energy Physics - Experiment (hep-ex)
TARGETS
0103 physical sciences
ddc:530
HADRONIZATION
Nuclear Experiment
010306 general physics
Mass number
Physics
010308 nuclear & particles physics
HERA
Deep inelastic scattering
Physics and Astronomy
High Energy Physics::Experiment
FRAGMENTATION
Lepton
Subjects
Details
- ISSN :
- 03702693
- Volume :
- 684
- Database :
- OpenAIRE
- Journal :
- Physics Letters B
- Accession number :
- edsair.doi.dedup.....f1fb9da158bdaeaca10d16d927c3d183