Download or read book Electroproduction of K Mesons at CLAS written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The electroproduction of K{sup *0} mesons using the CLAS detector is described. Data for two electron beam energies, 4.056 and 4.247 GeV, were measured and the normalized yields are compared.
Download or read book Electroproduction of PHI 1020 Mesons at High Q2 with CLAS written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electroproduction of 1020 Mesons at High Q2 with CLAS written by and published by . This book was released on 2007 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: This analysis studies the reaction ep → e'p'? in the kinematical range 1.6 ≤ Q2 ≤ 3.8 GeV2 and 2.0 ≤ W ≤ 3.0 GeV at CLAS. After successful signal identification, total and differential cross sections are measured and compared to the world data set. Comparisons are made to the predictions of the Jean-Mart Laget (JML) model based on Pomeron plus 2-gluon exchange. The overall scaling of the total cross section was determined to be 1/Q4.6+/-1.7 which is compatible within errors to the Vector Meson Dominance prediction of 1/ Q4 as well as to the expected behavior of a quark and gluon exchange-dominated model described by Generalized Parton Distributions of 1/Q6. The differential cross section d?/d? was used to determine that the s-channel helicity conservation (SCHC) assumption is valid within the precision of the current data. SCHC leads to a simple expression for the decay angular distribution from which R, the ratio of the longitudinal to the transverse cross section, can be extracted. Under the assumption of SCHC, we determine R = 1.33 ± 0.18 at an average Q2 of 2.21 GeV2 which leads to a determination of the longitudinal cross section sL = 5.3 ± 1.3 nb for exclusive ? production.
Download or read book Electroproduction of Omega 783 Mesons Using CLAS at Jefferson Lab written by Alan Clayton Coleman and published by . This book was released on 1999 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mesons and Light Nuclei 95 written by J. Adam and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Conference Mesons and Light Nuclei, organized by the Institute of Nuclear Physics (INP), Rez, was held during July 2 - 7, 1995 in small north Bohemian town Straz pod Ralskem. It was the sixth in a series of meetings which took place previously at Liblice 74 and 81, Bechyne 85 and 88, and Prague 91. The conferences gained already their firm position among intermediate energy nuclear physics activities. International nuclear physics community strongly supported our intention to continue the series. This year's venue for the conference was the accommodation and social area of the DIAMO company at Straz. The goal of the meeting was to summarize the present situation and the future perspectives concerning the experimental investigations and theoreti cal descriptions of light nuclei and their interactions with electromagnetic and hadronic probes, mainly at intermediate energies. The scientific program of the conference included the following areas of research: nuclear physics with pions and antiprotons, T)-meson physics, baryonic systems with strangeness, relativis tic few-body dynamics, and electroweak nuclear interaction. Representatives from many international groups working within different experimental facili ties and with different theoretical methods were invited and asked to present their latest results and future research programs. The Straz conference, attended by 102 physicist from institutions in 22 countries, was sponsored by the Austrian Ministry for Science and Research, Czech Ministry for Industry and Trade, and by SKODA PRAHA a.s. Thanks to this sponsorship we could also invite several participants and students at essentially reduced cost.
Download or read book Deeply Pseudoscalar Meson Electroproduction with CLAS and Generalized Parton Distribution written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We discuss the recent data of exclusive $\pi^0$ (and $\pi^+$) electroproduction on the proton obtained by the CLAS collaboration at Jefferson Lab. It is observed that the cross sections, which have been decomposed in $\sigma_T+\epsilon\sigma_L$, $\sigma_{TT}$ and $\sigma_{LT}$ structure functions, are dominated by transverse amplitude contributions. The data can be interpreted in the Generalized Parton Distribution formalism provided that one includes helicity-flip transversity GPDs.
Download or read book Electro and Photo production of W 783 Mesons Using CLAS at Jefferson Lab written by and published by . This book was released on 2000 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electro- and photoproduction of w(783) from a proton target have been measured in the CLAS detector at the Thomas Jefferson National Accelerator Facility in Newport News VA. The photoproduction data were taken over a photon energy range from 0.5 to 2.3 GeV, while the electroproduction data was obtained over a W range of 1.8-2.5 GeV/c2. Preliminary acceptance corrected center-of-mass angular distributions have been examined for both data sets.
Download or read book Electroproduction of phi 1020 Mesons at High Q 2 with CLAS written by and published by . This book was released on 2008 with total page 25210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Http://dx.doi.org/10.1103/PhysRevC. 78.025210 Electroproduction of exclusive $\phi$ vector mesons has been studied with the CLAS detector in the kinematical range $1.6\leq Q^2\leq 3.8$ GeV$^{2}$, $0.0\leq t^{\prime}\leq 3.6$ GeV$^{2}$, and $2.0\leq W\leq 3.0$ GeV. The scaling exponent for the total cross section as $1/(Q^2+M_{\phi}^2)^n$ was determined to be $n=2.49\pm 0.33$. The slope of the four-momentum transfer $t'$ distribution is $b_{\phi}=0.98 \pm 0.17$ GeV$^{-2}$. The data are consistent with the assumption of s-channel helicity conservation (SCHC). Under this assumption, we determine the ratio of longitudinal to transverse cross sections to be $R=0.86 \pm 0.24$. A 2-gluon exchange model is able to reproduce the main features of the data.
Download or read book Interpretation of K meson Decays written by Sidney A. Bludman and published by . This book was released on 1956 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electro and Photoproduction of omega 783 Mesons Using CLAS at Jefferson Lab written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electro- and photoproduction of [omega](783) from a proton target have been measured in the CLAS detector at the Thomas Jefferson National Accelerator Facility in Newport News, VA. The photoproduction data were taken over a photon energy range from 0.5 to 2.3 GeV, while the electroproduction data was obtained over a W range of 1.8--2.5 GeV/c2. Preliminary acceptance-corrected center-of-mass angular distributions have been examined for both data sets.
Download or read book Intersections of Particle and Nuclear Physics written by Tony M. Liss and published by American Institute of Physics. This book was released on 2006-12-13 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a conference that explores areas of common interest between nuclear physicists, high energy (particle) physicists, and astrophysicists. These areas range from studies of the strong interactions that bind the nuclei together, to physics of the very early Universe. They include such topics as the detailed behavior of neutrinos and searches for "new physics", that is phenomena that cannot be accounted for by our current theories.
Download or read book Electroproduction of Mesons and the Quark Model written by R. Meaburn and published by . This book was released on with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1972 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lambda Polarization in Exclusive Electro and Photoproduction at CLAS written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The CLAS collaboration at JLab has recent results on[Lambda] polarization for both electroproduction and photoproduction of K[sup+][Lambda] exclusive states. I note the striking phenomenological trends in the data and discuss the underlying physics which might give rise to these phenomena; both in the context of an e.ective Lagrangian formalism, where the degrees of freedom are intermediate mesons and baryons, and also in the context of a simple quark picture. The quark model argument leads to the conclusion that the s and[bar s] quarks are produced with spins anti-aligned, in apparent contradiction to the popular[sup 3]P[sub 0] model of quark pair creation in which the pair is created with vacuum quantum numbers (J=0 and positive parity), i.e. in an S=1, L=1, J=0 angular momentum state.
Download or read book Electroproduction of Omega Mesons written by James T Linnemann and published by . This book was released on 1978 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electroproduction of Phi 1020 Mesons written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Electroproduction of exclusive $\phi$ vector mesons has been studied with the CLAS detector at an average $Q^2$ of $2.21$\, GeV$^2$. The scaling exponent for the total cross section as $1/(Q^2+M_{\phi}^2)^n$ was determined to be $n=1.97 \pm 0.84$, consistent with the Vector Dominance Model prediction of n=2. The data are consistent with the assumption of s-channel helicity conservation (SCHC). Under this assumption we determine the ratio of longitudinal to transverse cross sections to be $R=0.86 \pm 0.24$.
