Published December 15, 1989 | Version v1
Journal article Metadata-only

Charm hadroproduction with an impact parameter trigger

Creators

  • 1. Univ. of Bologa/INFN (Italy)
  • 2. European Organization for Nuclear Research, Geneva (Switzerland)
  • 3. Univ. of Geneva/INFN (Italy)
  • 4. Univ. of Milano/INFN (Italy)
  • 5. Univ. of Mons (Belgium)
  • 6. Moscow Lebedev Phys. Inst., Moscow (USSR)

Description

We report results on hadroproduction of charm based on a sample of ∼750 D mesons. Charmed particles, produced in a thin segmented target of Si and W by a 340 GeV/c π- beam and selected by a novel trigger with an enrichment factor of ∼15, are identified by the invariant mass of secondary vertices. Data were collected with the Ω' spectrometer at the CERN SPS supplemented by a silicon microstrip vertex detector. Assuming the parameterization σ(π-N→DX)∼Aα where A is the atomic number, we find α=0.89±0.05±0.05 for a data sample with an average xF of 0.2. The xF and pperpendicular distributions of the charged D mesons are also described and the possibility of a leading effect is investigated

Additional details

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
196
Journal Issue
1
Series
AIP Conf. Proc.
Journal Page Range
285-298
ISSN
0094-243X
CODEN
APCPC

Conference

Title
International symposium on heavy quark physics.
Dates
13-17 Jun 1989.
Place
Ithaca, NY (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
21056534
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
ATOMIC NUMBER; CERN SPS SYNCHROTRON; CHARM PARTICLES; CROSS SECTIONS; D MESONS; EXPERIMENTAL DATA; GEV RANGE 100-1000; HADRON-HADRON INTERACTIONS; MULTI-PARAMETER ANALYSIS; PARTICLE PRODUCTION; PION BEAMS; SILICON; SPECTROMETERS; TUNGSTEN
Descriptors DEC
ACCELERATORS; BEAMS; BOSONS; CHARMED MESONS; CYCLIC ACCELERATORS; DATA; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; MEASURING INSTRUMENTS; MESON BEAMS; MESONS; METALS; NUMERICAL DATA; PARTICLE BEAMS; PARTICLE INTERACTIONS; PSEUDOSCALAR MESONS; SEMIMETALS; SYNCHROTRONS; TRANSITION ELEMENTS

Optional Information

Secondary number(s)
CONF-8906204--.