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Title: Charm production by muons and its role in scale-noninvariance

Abstract

Interactions of 209 GeV muons in the Multimuon Spectrometer at Fermilab have yielded more than 8 x 10/sup 4/ events with two muons in the final state. After reconstruction and cuts, the data contain 20,072 events with (81 +- 10)% attributed to the diffractive production of charmed states decaying to muons. The cross section for diffractive charm muoproduction is 6.9 +- 1.4/sup 1/ /sup 9/nb where the error includes systematic uncertainities. Extrapolated to Q/sup 2/ = 0 with sigma(Q/sup 2/) = sigma(0)(1 + Q/sup 2//..lambda../sup 2/)/sup -2/, the effective cross section for 178 (100) GeV photons is 750 +- /sub 130//sup 180/ (560 +- /sub 120//sup 200/)nb and the parameter ..lambda.. is 3.3 +- 0.2 (2.9 +- 0.2) GeV/c. The nu dependence of the cross section is similar to that of the photon-gluon-fusion model. A first determination of the structure function F/sub 2/(c anti c) for diffractive charm production indicates that charm accounts for approximately 1/3 of the scale-noninvariance observed in inclusive muon-nucleon scattering at low Bjorken x. Okubo-Zweig-Iizuka selection rules and unitarity allow the muon data to set a 90%-confidence lower limit on the psi N total cross section of 0.9 mb.

Authors:
Publication Date:
Research Org.:
Princeton Univ., NJ (USA)
OSTI Identifier:
6090198
Alternate Identifier(s):
OSTI ID: 6090198
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: Thesis (Ph. D.)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHARM PARTICLES; PARTICLE PRODUCTION; MUON-NUCLEON INTERACTIONS; CROSS SECTIONS; FERMILAB ACCELERATOR; GEV RANGE 100-1000; INCLUSIVE INTERACTIONS; QUARKS; SCATTERING; STRUCTURE FUNCTIONS; ACCELERATORS; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; ENERGY RANGE; FUNCTIONS; GEV RANGE; INTERACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; PARTICLE INTERACTIONS; POSTULATED PARTICLES; SYNCHROTRONS 645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties

Citation Formats

Gollin, G.D. Charm production by muons and its role in scale-noninvariance. United States: N. p., 1981. Web.
Gollin, G.D. Charm production by muons and its role in scale-noninvariance. United States.
Gollin, G.D. Thu . "Charm production by muons and its role in scale-noninvariance". United States.
@article{osti_6090198,
title = {Charm production by muons and its role in scale-noninvariance},
author = {Gollin, G.D.},
abstractNote = {Interactions of 209 GeV muons in the Multimuon Spectrometer at Fermilab have yielded more than 8 x 10/sup 4/ events with two muons in the final state. After reconstruction and cuts, the data contain 20,072 events with (81 +- 10)% attributed to the diffractive production of charmed states decaying to muons. The cross section for diffractive charm muoproduction is 6.9 +- 1.4/sup 1/ /sup 9/nb where the error includes systematic uncertainities. Extrapolated to Q/sup 2/ = 0 with sigma(Q/sup 2/) = sigma(0)(1 + Q/sup 2//..lambda../sup 2/)/sup -2/, the effective cross section for 178 (100) GeV photons is 750 +- /sub 130//sup 180/ (560 +- /sub 120//sup 200/)nb and the parameter ..lambda.. is 3.3 +- 0.2 (2.9 +- 0.2) GeV/c. The nu dependence of the cross section is similar to that of the photon-gluon-fusion model. A first determination of the structure function F/sub 2/(c anti c) for diffractive charm production indicates that charm accounts for approximately 1/3 of the scale-noninvariance observed in inclusive muon-nucleon scattering at low Bjorken x. Okubo-Zweig-Iizuka selection rules and unitarity allow the muon data to set a 90%-confidence lower limit on the psi N total cross section of 0.9 mb.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Thesis/Dissertation:
Other availability
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