Download or read book Measurement of the Unpolarized K sup Lambda and K sup Sigma sup 0 Electroproduction Cross Sections and Interference Terms from the Proton with the CLAS Detector written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using the CLAS detector, we measure the K[sup+][Lambda] and K[sup+][Sigma][sup 0] electroproduction response functions over the continuous kinematic range from threshold to W= 2.05 GeV and for Q[sup 2] between 0.5 and 1.5 (GeV/c)[sup 2], with nearly complete angular coverage in the center-of-momentum frame angles. The[sigma][sub T]+[epsilon][sigma][sub L], [sigma][sub TT] terms are extracted and compared to recent theoretical calculations based upon a hadrodynamic effective-Lagrangian framework. From examining the W-dependence of the response functions for the K[sup+][Lambda] final state, we find features in the ([sigma][sub T]+[epsilon][sigma][sub L]) term in the W= 1.75 to 1.90GeV region, similar to features seen in recent photoproduction results. In general, the[sigma][sub TT] and[sigma][sub LT] response-functions for[Lambda] production are of the same order of magnitude as the ([sigma][sub T]+[epsilon][sigma][sub L]) term, suggesting that both[sigma][sub T] and[sigma][sub L] contribute significantly. For the K[sup+][Sigma][sup 0] final state the W-dependence of the ([sigma][sub T]+[epsilon][sigma][sub L]) and[sigma][sub TT] terms have large, resonant-like features near W= 1.9GeV. Unlike in[Lambda] electroproduction, the[sigma][sub LT] interference term for[Sigma][sup 0] electroproduction is found to be consistent with zero across nearly the entire kinematic range, while[sigma][sub TT] is comparable in magnitude to the[sigma][sub T]+[epsilon][sigma][sub L] differential cross-section. The models, while achieving some qualitative agreement with the data, fail to both describe the details of the angular distributions and reproduce the resonant-like behavior observed.
Download or read book Measurement of the Unpolarized K Lambda and K Sigma 0 Electroproduction Cross Sections and Interference Terms from the Proton with the CLAS Detector written by and published by . This book was released on 2002 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of the Unpolarized K Lambda and Sigma0 Electroproduction Cross sections and Interference Terms from the Proton with the CLAS Detector written by Robert J. Feuerbach and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of the Unpolarized K K Lambda and K 0 K Sigma 0 Electroproduction Cross section Off the Proton with KAOS spectrometer written by Salvador Sánchez Majos and published by . This book was released on 2012 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of the Unpolarized K Lambda and K Sigma 0 Electroproduction Cross section Off the Proton with KAOS spectrometer written by Salvador Sánchez Majos and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Total Cross Sections of K sup p and K sup d from 411 to 1065 MeV c written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Total cross sections of K$sup -$p and K$sup -$d were measured between 411 and 1065 MeV/c with high statistical precision. In addition to the well known $lambda$(1690), $Sigma$(1765) and the $Sigma$(1670), the data show indications of several possible structures in both I = 0 and I = 1 isotopic spin states. (auth).
Download or read book Photographic Print of Painting Showing the Death of Lincoln written by and published by . This book was released on 1940 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Print in true wood frame with glass.
Download or read book K sup p and Anti Pp Charge Exchange Cross Sections Below 1 1 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 cross sections are measured for K$sup -$p $Yields$ anti K$sup 0$n at 520 to 1060 MeV/c and for anti pp $Yields$ anti nn from 270 to 960 MeV/c with a typical point-to-point precision of about 1 percent. The cross sections in preliminary form are shown and discussed. It is suggested that the spin of the $Sigma$(1590) must be at least $sup 2$/$sub 3$ and that of a possible resonance at the bump at 475 MeV/c must be at least 4. (JFP).
Download or read book Measurement of the Differential Cross Section of K sup n K sup 0 p at K sup Momenta of 0 7 0 8 and 0 9 GeV c Lifetime Partial Waves written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The cross section and differential cross section for K/sup +/n .-->. K/sup 0/p charge-exchange scattering was measured at 700 to 900 MeV/c, and the K/sup 0/ decay lifetime was also measured. Comparisons were made with partial-wave-analysis predictions. (JFP).
Download or read book Measurement of Differential Cross Sections and Cx and Cz for Gamma P K Lambda and Gamma P K Sigma0 Using CLAS at Jefferson Lab written by Robert K. Bradford and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Differential Cross Sections and Cx and Cz for Gamma Photon proton Going to Kaon lambda Baryon and Gamma Photon proton Going to Kaon sigma Baryon Using CLAS at Jefferson Lab written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents several observables for the reactions [gamma] p → K+[Lambda] and [gamma] p → K+[Sigma]°. In addition to measuring differential cross sections, we have made first measurements of the double polarization observables Cx and Cz. Cx and C z characterize the transfer of polarization from the incident photon to the produced hyperons. Data were obtained at Jefferson Lab using a circularly polarized photon beam at endpoint energies of 2.4, 2.9, and 3.1 GeV. Events were detected with the CLAS spectrometer. In the [Lambda] channel, the cross sections support the recent observation of new resonant structure at W = 1900 MeV. Studies of the invariant cross section, dsdd show scaling behavior suggesting that the production mechanism becomes t-channel dominated near threshold at forward kaon angles. The double polarization observables show that the recoiling [Lambda] is almost maximally polarized along the direction of the incident photon from mid to forward kaon angles. While [Sigma]o differential cross sections are of the same magnitude as the [Lambda] differential cross sections, there is evidence of different physics dominating the production mechanism. The [Sigma]° invariant cross sections do not show the same t-scaling behavior present in the [Lambda] results. The double polarization observables indicate that the [Sigma]° is not polarized as strongly as the [Lambda]. They also fail to identify one preferred polarization axis. Complete interpretation of these results will rely on model calculations. Currently available isobar models obtain varying degrees of success while attempting to predict the double polarization observables. While the models are in better agreement with the differential cross sections, discrepancies with our cross sections indicate that they must be re-optimized in light of the new data. While the data suggest that a Regge model would provide a good description of K+[Lambda] over most of the range in W, the available Regge calculation overstates the strength of the cross section and does not predict Cx and Cz correctly.
Download or read book K 0 Photoproduction Off the Proton at CLAS written by K. Hicks and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report here differential cross sections for the reaction {gamma}p {yields} K*{sup 0}{Sigma}{sup +} for the first time with high statistics. The measurements were done using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Data were taken at 3.115 GeV electron beam energy using tagged photons incident upon a liquid hydrogen target. In addition, our analysis provides information about nucleon resonances and their couplings to K* decay. Our data will be used to test predictions of theoretical models of K* production, and to provide constraints on the K*{Sigma}N coupling constant used in these models.
Download or read book Lambda K sup 0 AND Sigma sup 0 K sup 0 Production in 1 5 GeV C pi sup p Interactions written by and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Measurement of Unpolarized Cross Sections and Polarized Cross Section Differences of Deeply Virtual Compton Scattering on the Proton at Jefferson Laboratory Using CLAS e1 dvcs2 written by Nicholas A. N. Hirlinger Saylor and published by . This book was released on 2013 with total page 624 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 Total Cross Sections of pi sup K sup P and Anti P on Protons and Deuterons at Very High Energies 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 Analysis of the Interaction K sup p Yields Sigma sup 0 pi sup 0 in the 1575 to 1750 MeV Region written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: From 2nd internationnl conference on elementary particles; Aix-en- Provence, France (6 Sep 1973). A formation type experiment made in a heavy liquid bubble chamber for the channel K/sup -/p yields SIGMA /sup o/ pi /sup o/ in the 1575 to 1750 M eV cm energy range is considered. From the results containing 2̃/3 of the statistics, essentially the total and differential cross sections for this channel are presented and compared with the results of a hydrogen BC experiment made by a CHS collaboration, where the SIGMA /sup o/ pi / sup o/ channel was studied indirectly. (auth).
