Download or read book Comparison of the Differential Cross sections For Pi sup p Eta n And Pi sup p Eta N at 8 4 GeV c Simple Quark Model Quadratic Mixing written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary data are presented based on 45 percent of the sample, from a simultaneous study of .pi./sup -/p .-->. eta'n, eta' .-->. eta.pi./sup +/.pi./sup -/, eta .-->. .gamma gamma., (1770 events) and .pi./sup -/p .-->. etan.pi./sup 0/.pi./sup +/.pi./sup -/ .-->. .gamma gamma., (3250 events) at 8.4 GeV/c, covering a range of momentum transfer t' from 0 to 1.7 (GeV/c)/sup 2/. Both charged pions and both .gamma.'s from each reaction were measured in the charged and neutral spectrometer at the Argonne ZGS. Backgrounds are 2 to 5 percent. The shapes of dsigma/dt for the two reactions are found significantly different, the eta' having considerably less forward turnover. The ratio of dsigma/dt at t' = 0 is (within present understanding of the systematics) consistent with a simple quark model and quadratic mixing angle approximately -10/sup 0.
Download or read book Comparison of the Differential Cross sections For Pi p Eta n And Pi p Eta N at 8 45 GeV c written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The ratio R of the differential cross sections for .pi.−p eta'n and .pi.−p eta n was measured with high statistics and small systematic errors at 8.45 GeV/c. R is generally interpreted as the relative content of nonstrange, ground-state quarks in eta' and eta. It is found that R decreases with increasing t; however, extrapolation to t = 0 gives R(0) = 0.672 +- 0.032 (statistical) +- 0.047 (systematic) for the dominant spin flip cross sections, and R(0) = 0.500 +- 0.085 +- 0.035 for the spin nonflip, in excellent agreement with results at higher energy.
Download or read book Measurement of the pi sup p Yields pi sup 0 n and pi sup p Yields Eta N Differential Cross Sections at Beam Momenta from 20 to 200 GeV c written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of a measurement of the $pi$$sup -$p $Yields$ $pi$$sup 0$n and $pi$$sup -$p $Yields$ eta n differential cross sections at six pion beam momenta from 20 to 200 GeV/c are presented. The data for these cross sections were collected at the Fermi National Accelerator Laboratory in Batavia, Illinois. A 73.5 x 73.5 cm lead--scintillator hodoscope was used to detect the two photons from the decay of the $pi$$sup 0$ and the eta; all other reactions were eliminated by detection of their charged particles and additional photons in an array of veto counters. The zero-degree charge exchange cross sections determined from these measurements are shown to be consistent with the measured $pi$$sup +$p and $pi$$sup -$p total cross section differences. Effective Regge trajectories for the rho and the A$sub 2$ also extracted from the data. 34 figures, 9 tables. (auth).
Download or read book Measurement of the pi p Yields pi n and pi p Yields Eta N Differential Cross Sections at Beam Momenta from 20 to 200 GeV c written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of a measurement of the [pi]−p $Yields$ [pi]°n and [pi]−p $Yields$ eta n differential cross sections at six pion beam momenta from 20 to 200 GeV/c are presented. The data for these cross sections were collected at the Fermi National Accelerator Laboratory in Batavia, Illinois. A 73.5 x 73.5 cm lead--scintillator hodoscope was used to detect the two photons from the decay of the $pi$° and the eta; all other reactions were eliminated by detection of their charged particles and additional photons in an array of veto counters. The zero-degree charge exchange cross sections determined from these measurements are shown to be consistent with the measured $pi$$sup +$p and $pi$−p total cross section differences. Effective Regge trajectories for the rho and the A2 also extracted from the data. 34 figures, 9 tables. (auth).
Download or read book J psi psi prime r arrow mu sup mu sup minus and B r arrow J psi psi prime Cross Sections written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents a measurement of J/[psi], [psi][prime] differential cross sections in p[bar p] collisions at [radical]s = 1. 8 TeV. The cross sections are measured above 4 GeV/c in the central region ([vert-bar][eta][vert-bar]
Download or read book Measurement of the pi Symbol P right Arrow pi Symbol 0 N and pi Symbol P right Arrow eta Symbol N Differential Cross Sections at Beam Momenta from 20 to 200 GeV c written by Randy Allan Johnson and published by . This book was released on 1975 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Total Cross Sections of pi sup K sup P and Anti P on Protons and Deuterons Between 50 and 200 GeV c written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Differential Cross Sections and Scaling in pi p Yields X p at 25 and 40 GeV c written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: From second international conference on elementary particles; Aix-en- Provence, France (6 Sep 1973). The reaction pi −p yields X−p was investigated at P/sup inc/ = 25 and 40 GeV/c at the Serpuknov Accelerator. The differential inelastic cross sections DELTA 2 sigma // DELTA t DELTA M/sup 2/ are presented as a function of s, t, and M2 (X−). The scaling hypothesis was tested. (auth).
Download or read book Differential Cross Sections and Scaling in pi sup p Yields X sup p at 25 and 40 GeV c written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: From second international conference on elementary particles; Aix-en- Provence, France (6 Sep 1973). The reaction pi /sup -/p yields X/sup -/p was investigated at P/sup inc/ = 25 and 40 GeV/c at the Serpuknov Accelerator. The differential inelastic cross sections DELTA /sup 2/ sigma // DELTA t DELTA M/sup 2/ are presented as a function of s, t, and M/sup 2/ (X/sup -/). The scaling hypothesis was tested. (auth).
Download or read book Measurement of the Differential Cross Section at 3 4 5 6 GeV c for the Reactions pi sup p Yields K sup 0 lambda sup 0 and pi sup p Yields K sup 0 Sigma sup 0 and of lambda sup 0 Polarization at 5 GeV c written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement Of Differential Cross Sections Of P e E pi sup n For High Lying Resonances At Q sup 2 5 GeV sup 2 written by and published by . This book was released on 2014 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exclusive electro-production process ep -> e'n? was measured in the range of the invariant mass for n?+ system 1.6 GeV
Download or read book Pi P Elastic Differential Cross Sections Between 1 2 and 2 3 GeV written by Alvin Toivo Laasanen and published by . This book was released on 1973 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Differential Cross Sections in pi p Yields K lambda and pi p Yields K Sigma from 3 to 6 GeV c written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Topological Cross Sections and Multiplicity Moments for pi sup p Interactions at 250 GeV c written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The data are from a 46,000 picture exposure of the 15-foot hydrogen bubble chamber at Fermilab to a 250-GeV/c $pi$$sup -$run. An inelastic cross section of 21.1 +- 0.6 mb was obtained. Topological cross sections and multiplicity moments are presented and compared with results at lower energies. The energy dependence of the mean charged multiplicity, (n), and the second moment, f$sub 2$, are well fit by a polynomial in log's for $pi$$sup -$p experiment from 10 to 250 GeV/c. (auth).
Download or read book A Measurement of Pi p Backward Elastic Differential Cross sections from 1 282 to 2 472 GeV c written by D. J. Candlin and published by . This book was released on 1984 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Backward Production In Pi Minus Plus Proton Goes to Neutron Pi Plus PI Minus at 8 GeV c Differential Cross Sections written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Events of the form .pi./sup -/p .-->. n.pi./sup +/.pi./sup -/ where the neutron is produced fast and forward in the laboratory are reported. The data were obtained in an initial exposure of 160,000 pictures in the University of Illinois--Argonne National Laboratory streamer chamber using an 8 GeV/c pion beam. The chamber was triggered by the detection of a fast forward neutral hadron interacting in an array of thick plate optical spark chambers. The dominant feature of the data is quasi-two body-production of nrho/sup 0/ and nf/sup 0/ intermediate states. The differential cross section for rho/sup 0/ production shows evidence for backward peaking near u' = 0. The f/sup 0/ decay angular distributions appear to be consistent with the hypothesis of u channel proton exchange as the dominant production mechanism. For both nrho/sup 0/ and nf/sup 0/ production the observed cross sections are on the order of one microbarn. (auth).
Download or read book Measurements of Total Cross Sections Between 23 and 280 GeV c written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The high precision measurements of the total cross sections for [pi]/sup +-/, K/sup +-/, p, and anti p scattering from H2 and D2 were continued with an extension of the energy range from 23 to 280 GeV/c. (JFP).
