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Author : Petros-Afentoulis Rapidis
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.F/5 ( download)
Download or read book D Meson Production in E+e− Annihilation written by Petros-Afentoulis Rapidis and published by . This book was released on 1979 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Petros-Afentoulis Rapidis
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.:/5 (654 download)
Download or read book D Meson Production in Ee− Annihilation written by Petros-Afentoulis Rapidis and published by . This book was released on 1979 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download D Meson Production in Ee− Annihilation. [3. 7 to 7. 0 GeV, Total Cross Section, Branching Ratio]. PDF Online Free](https://books.google.com/books/content/images/frontcover/jxmsAQAACAAJ?fife=w200-h370)
Download or read book D Meson Production in Ee− Annihilation. [3. 7 to 7. 0 GeV, Total Cross Section, Branching Ratio]. written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of D mesons in ee− annihilation for the center-of-mass energy range 3.7 to 7.0 GeV was studied with the MARK I magnetic detector at SPEAR. A resonance was observed in the total cross section for hadron production in ee− annihilation at an energy just above the threshold for charm production. This resonance, which is named psi'', has a mass of 3772 +- 6 MeV/c2, a total width of 28 +- 5 MeV/c2, a partial width to electron pairs of 345 +- 85 eV/c2, and decays almost exclusively into D anti D pairs. The psi'' provides a rich source of background-free and kinematically well defined D mesons for study. From produced in the decay of the psi'' the masses of the D° and D/sup +/ mesons were determined to be 1863.3 +- 0.9 MeV/c2 and 1868.3 +- 0.9 MeV/c2 respectively. Also the branching fractions for D° decay to K−.pi./sup +/, anti K°.pi./sup +/.pi.− and K−.pi./sup +/.pi.−.pi./sup +/ were determined to be (2.2 +- 0.6)%, (4.0 +- 1.3)%, and (3.2 +- 1.1)% and the branching fractions for D/sup +/ decay to anti K°.pi./sup +/ and K−.pi./sup +/.pi./sup +/ to be (1.5 +- 0.60)% and (3.9 +- 1.0)%. The average number of kaons per D decay was found to be 0.52 +- 0.14 K°'s and 0.42 +- 0.12 K/sup +/'s. The rate for inclusive production of D mesons at center-of-mass energies above the psi'' was measured; it is found that it can account for most, if not all, of the observed increase in the total hadronic cross-section for center-of-mass energies above 4 GeV. The inclusive momentum and energy spectra for D's were measured at the highest available center-of-mass energy (7 GeV). The energy spectra are rapidly decreasing functions of energy with a slope similar to the slope of the charged pion spectrum at the same center-of-mass energy. This behavior suggests that the fragmentation function of the charmed quark into charmed mesons is a decreasing function of the scaling variable z = 2E/sub D//E/sub CM/. 81 references.
Download or read book D* and D Meson Production in Ee− Annihilation at 29 GeV. written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results on D* and D meson production at 29 GeV are presented from the DELCO, HRS, and MARK II collaborations at PEP.
Download or read book Case for Charmed Meson Production in Ee- Annihilation at Spear written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Evidence is presented that a new particle, a narrow resonance of mass 1865 MeV/c2, and its associated excited state can be identified with the (D°, D/sup +/) and (D*°, D*/sup +/) doublets of charm theory. The D production in e−e/sup +/ annihilation and various properties of the decay modes are considered. 54 references. (JFP).
![Download Production and decay of the charged D* [D] meson in e_1hn+e_1hn- [ee] annihilation at 10 GeV centre of mass energy PDF Online Free](https://books.google.com/books/content/images/frontcover/9TExygAACAAJ?fife=w200-h370)
Download or read book Production and decay of the charged D* [D] meson in e_1hn+e_1hn- [ee] annihilation at 10 GeV centre of mass energy written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Charmed Meson Production by Ee- Annihilation. [Branching Ratios, Angular Distributions]. PDF Online Free](https://books.google.com/books/content/images/frontcover/URNoAQAACAAJ?fife=w200-h370)
Download or read book Charmed Meson Production by Ee- Annihilation. [Branching Ratios, Angular Distributions]. written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Compelling evidence is presented for the production of the lying (D°, D) isodoublet of charmed mesons by ee− annihilation. A study of the recoil mass spectra against these mesons reveals the presence of more massive charmed states, the D*° and D*+, produced in association with the D isodoublet. Mass values and upper limits on the width of the D and D* are established, and the branching fractions for several D* decay modes are obtained. An analysis of the production and decay angular distributions shows that the D is probably a pseudoscalar state and the D* is probably a vector. Finally, upper limits are obtained for D°-antiD° mixing.
![Download F meson production from e_1hn+e_1hn- [ee] annihilation in the Tasso detector PDF Online Free](https://books.google.com/books/content/images/frontcover/ARNZygAACAAJ?fife=w200-h370)
Download or read book F meson production from e_1hn+e_1hn- [ee] annihilation in the Tasso detector written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Parkinson
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (494 download)
Download or read book Meson Production in Antiproton-nucleon Annihilation written by Michael Parkinson and published by . This book was released on 1965 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (16 download)
Download or read book Threshold Production of $D$ and $B$ Meson Pairs in $e+̂ E-̂$ Annihilation written by and published by . This book was released on 1989 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Production and Decay of the Charged D[superscript *] Meson in E+e- Annihilation at 10 GeV Centre-of-mass Energy PDF Online Free](https://books.google.com/books/content/images/frontcover/CQP5GgAACAAJ?fife=w200-h370)
Author : ARGUS Collaboration
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (354 download)
Download or read book Production and Decay of the Charged D[superscript *] Meson in E+e- Annihilation at 10 GeV Centre-of-mass Energy written by ARGUS Collaboration and published by . This book was released on 1984 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (929 download)
Download or read book Production and Fragmentation of the D*(sup)0 Meson in E+e- Annihilation at Sqr(s) written by and published by . This book was released on 1986 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Janis Anne McKenna
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (977 download)
Download or read book Production and Decay of the Ds and Ds* Mesons in Ee− Annihilation written by Janis Anne McKenna and published by . This book was released on 1988 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 45 pages
Book Rating : 4.:/5 (16 download)
Download or read book Charmed Mesons Produced in E+e- Annihilation written by and published by . This book was released on 1980 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: We shall begin our review by summarizing the first experimental indications for the existence of charm as obtained from experiments in e+e− annihilation. This will include a brief discussion of the role of charm in the understanding of the ? mesons, as well as the unraveling of the intricate structure present in the e+ e− total hadronic cross section. Next we shall discuss the discovery of the D°, and D+, and detail those properties crucial to their identification as charmed particles. Following will be a review of the properties of the D° and D+ learned through studies at the ?(3770) resonance, Compelling evidence will be summarized indicating that this state decays nearly exclusively into D{bar D}, thus making it particularly useful in establishing inclusive and exclusive D branching fractions. Our discussion of branching fractions will include two particularly important D decay modes, D°→?+?− and D°→K+−. These processes are suppressed relative to D°→K−?+ in the standard charm model, and thus serve as a critical test of that theory. This will be followed by a discussion of the D semileptonic decay modes which provide useful information on the D° and D+ lifetimes. Turning our attention to the data collected beyond the ?(3770) we will discuss the properties and production mechanisms of the excited charm mesons, the D*° and the D*+. D production just above the ?(3770) appears to be dominated by the three quasi-two-body processes e+ e− → D{bar D}, D*{bar D} + {bar D}*D, and D*{bar D}*, in accordance with early theoretical predictions. The relative amounts of each process, on the other hand, is somewhat surprising, and has led to considerable theoretical speculation. Finally, we will summarize evidence for the existence of the F meson which is as yet not on as solid a footing as the D°, D+ isodoublet.
![Download A Measurement of D and Ds Production in Ee− Annihilation at [square Root Of] S PDF Online Free](https://books.google.com/books/content/images/frontcover/Wy5IOAAACAAJ?fife=w200-h370)
Author : Derrell Durrett
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (346 download)
Download or read book A Measurement of D and Ds Production in Ee− Annihilation at [square Root Of] S written by Derrell Durrett and published by . This book was released on 1993 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Charmed Meson Production and Decay Properties at the [psi] (3770) PDF Online Free](https://books.google.com/books/content/images/frontcover/cOtEAAAAIAAJ?fife=w200-h370)
Author : Rafe Schindler
Publisher :
ISBN 13 :
Total Pages : 458 pages
Book Rating : 4.F/5 ( download)
Download or read book Charmed Meson Production and Decay Properties at the [psi] (3770) written by Rafe Schindler and published by . This book was released on 1979 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hitoshi Yamamoto
Publisher :
ISBN 13 :
Total Pages : 434 pages
Book Rating : 4.:/5 (436 download)
Download or read book A Study of D* Mesons Produced in E+e- Annihilation at Ecm written by Hitoshi Yamamoto and published by . This book was released on 1986 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
