Study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>Δ</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mi>p</mml:mi></mml:math>interactions at 100, 200, and 360 GeV/<i>c</i>
Patrick D. HigginsRadiation OncologyN. N. BiswasUniversity of Notre DameJ.M. BishopUniversity of Notre DameR. L. BolducUniversity of Notre DameN. M. CasonUniversity of Notre DameV. P. KenneyUniversity of Notre DameR. RuchtiUniversity of Notre DameW. D. ShephardUniversity of Notre DameW. D. WalkerDuke University#TAB#J. S. LoosArgonne National Laboratory; Duke UniversityL. FortneyDuke University#TAB#A. T. GoshawDuke University#TAB#W. J. RobertsonDuke University#TAB#E. W. AndersonIowa State University
H. B. CrawleyIowa State University
A. FirestoneIowa State University
Richard L. FloydIowa State University
W. J. KernanIowa State University
J. LamsaIowa State University
D. ParkerIowa State University
G. A. SnowUniv. of Maryland,#TAB#B.Y. Oh Michigan State UniversityM. Pratap Michigan State UniversityG. Sionakides Michigan State UniversityGerald A. Smith Michigan State UniversityJ. Whitmore Michigan State UniversityV. SreedharCase Western Reserve University; University of TorontoG.M. LevmanArgonne National Laboratory; University of TorontoBertram SchwarzschildUniversity of TorontoT.-S. YoonUniversity of TorontoG. HartnerMcGill University; University of TorontoP. M. PatelMcGill UniversityL. VoyvodicFermi National Accelerator LaboratoryR.J. WalkerFermi National Accelerator Laboratory
1979lv
ABI
Annotatsiya
We present a systematic study of ${\ensuremath{\Delta}}^{++}$ production in ${\ensuremath{\pi}}^{\ensuremath{-}}p$ reactions at Fermilab energies. Inclusive and semi-inclusive ${\ensuremath{\Delta}}^{++}(1232)$ production cross sections are determined. We observe these cross sections to be energy independent. The invariant cross sections as a function of Feynman $x$ and ${{p}_{T}}^{2}$ are also energy independent consistent with scaling behavior. We show that ${\ensuremath{\Delta}}^{++}$ production is consistent with a one-pion-exchange mechanism. Comparison of the density matrix elements with model predictions and results of a triple-Regge analysis both support the validity of a one-pion-exchange model.
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