Production and fragmentation of the D sup *0 charm meson in e sup + e sup minus annihilations at radical s = 29 GeV

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5016060

Low, H L

In this thesis, the neutral vector charm meson D{sup *0} has been studied. The data, corresponding to an integrated luminosity of 300 pb{sup {minus}1}, were collected using the High Resolution Spectrometer (HRS). The HRS is located at the PEP e{sup +}e{sup {minus}} storage ring at the Stanford Linear Accelerator Center. The detector subsystems relevant to the analysis are the seventeen layer drift chamber system and the barrel calorimeter system. Both of these devices are located within a solenoidal magnetic field of 1.62 Tesla. The charged particle momentum resolution is {sigma}{sub p}/p {approx} 6 {times} 10{sup {minus}3}p (p in GeV) for the momentum range used in this analysis. The electromagnetic energy resolution of the barrel shower counter system is {sigma}{sub E}/E {approx} 0.16/{radical}E (E in GeV). The radiative decay of the D{sup {asterisk}0} into a scalar charm meson, D{sup 0}, and a photon, {gamma}, where the D{sup 0} decays into a kaon and a pion (K{sup {minus}} {pi}{sup +}) has been observed. The production cross section in units of the point cross section is 0.63 {plus minus} 0.22 for fractional energy Z {ge} 0.5. This results is compared with the result form the JADE collaboration. The fragmentation function is compared with that of the D{sup *+} meson, also measured with the HRS.

• Research Organization: Purdue Univ., Lafayette, IN (USA)
• OSTI ID: 5016060
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
645103 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
BOSONS
CHARM PARTICLES
CHARMED MESONS
COLLISIONS
D MESONS
DATA
ELECTRON COLLISIONS
ELECTRON-POSITRON COLLISIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 10-100
HADRONS
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
MESONS
NUMERICAL DATA
PEP STORAGE RINGS
POSITRON COLLISIONS
PRODUCTION
PSEUDOSCALAR MESONS
STORAGE RINGS