Diffractive hadronic production of D mesons

Conference · Tue Jan 01 04:00:00 EST 1980

OSTI ID:6781529

Koester, L. J.; Alverson, G.; Ascoli, G.

A search for charmed D mesons was made with a 217 GeV ..pi../sup -/ beam on a liquid hydrogen target. The Chicago Cyclotron Spectrometer at Fermilab was used to analyze the hadronic decay of a D meson in coincidence with a prompt muon and a recoil proton. A total of 50 +- 12 D/sup + -/ events were observed with equal numbers in the two channels K/sup + -/..pi../sup - +/..pi../sup - +/. Some of the cuts selected diffractive events. When these cuts were removed the signal remained the same, although the background was greatly increased. The Feynman X and angular distributions were consistent with diffractive production. A diffractive model yielded a cross section of (6 to 10) +- 4 ..mu..b.

• Research Organization: Illinois Univ., Urbana (USA); Fermi National Accelerator Lab., Batavia, IL (USA); Harvard Univ., Cambridge, MA (USA); Oxford Univ. (UK); Tufts Univ., Medford, MA (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76ER03023; AC02-76ER01195
• OSTI ID: 6781529
• Report Number(s): CONF-800724-55
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHARM PARTICLES
CHARMED MESON RESONANCES
CROSS SECTIONS
D RESONANCES
D-1865 RESONANCES
DATA
DIFFRACTION MODELS
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 100-1000
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MATHEMATICAL MODELS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE MODELS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
POSTULATED PARTICLES
RESONANCE PARTICLES