A Study of Hadronic Decays of the Chi(c) States Produced in Psi-prime Radiative Transitions at the Beijing Experimental Spectrometer PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download A Study of Hadronic Decays of the Chi(c) States Produced in Psi-prime Radiative Transitions at the Beijing Experimental Spectrometer PDF full book. Access full book title A Study of Hadronic Decays of the Chi(c) States Produced in Psi-prime Radiative Transitions at the Beijing Experimental Spectrometer by Gary Sim Varner. Download full books in PDF and EPUB format.
Author: Gary Sim Varner
Publisher:
ISBN:
Category : Charmonium
Languages : en
Pages : 400
Get Book Here
Book Description
Author: Gary Sim Varner
Publisher:
ISBN:
Category : Charmonium
Languages : en
Pages : 400
Get Book Here
Book Description
![Study of Intermediate States Produced by Radiative Decays of Psi. [Chi 3415, 3500, 3550]. PDF](https://books.google.com/books/content/images/frontcover/3M1pAQAACAAJ?fife=w80-h100)
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Recent experimental results on narrow states, intermediate between psi and psi', produced by radioactive decays of psi' are discussed. These chi states are examined using the following processes: (1) inclusive photon spectra to search for monoenergetic photon lines, (2) cascade processes, psi' .-->. .gamma.1chi .-->. .gamma.2psi .-->. ee− or .mu.mu.−, and (3) hadronic decays of chi states, psi' .-->. .gamma.chi .-->. hadrons. Clearly identified states have been produced at masses 3415, 3500, and 3550 MeV with preferred spin-parity assignments of 0+, 1+, and 2+, respectively. (SDF).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Results of studies of selected radiative decays of the psi' to charmonium and non-charmonium states which decay into photons are presented. These studies were performed using a sample of 1.8 x 106 produced psi''s collected by the Crystal Ball detector at the SPEAR electron-positron storage ring. The branching ratios of the chi0, chi2, and eta'/sub c/ to two photons have been measured to be (4.5 +- 2.2 +- 2.0) x 10−4, (9.5 +- 2.9 +- 4.5) x 10−4 (first errors statistical, second systematic), and 1 x 10−2 (90% C.L.). The signal from the decay chain psi' .--. .gamma.chi0, chi0 .-->. .pi.°.pi.° has been observed with essentially no background. Using the observed line shape of the radiative photon in this reaction, the full width of the psi0 has been found to be 8.8 +- 1.3 +- 1.5 MeV/c2. In addition, the branching ratios of the chi0 and chi2 to .pi.°.pi.° have been measured to be (3.5 +- 0.3 +- 1.2) x 10−3 and (1.2 +- 0.2 +- 0.4) x 10−3; the branching ratios of the chi0 and chi2 to eta eta have been measured to be (2.8 +- 0.9 +- 1.3) x 10−3 and (8.4 +- 4.2 +- 4.0) x 10−4. The decays of the psi' to four non-charmonium states have been investigated. The branching ratios and upper limits of these decays have been normalized to the branching ratios of the corresponding decays from the J/psi which have been measured using a sample of 2.2 x 106 produced J/psi's collected by the Crystal Ball detector. The ratios of the psi' branching ratios to the J/psi branching ratios for the final states .gamma.eta, .gamma.eta', .gamma.theta, and .gamma.f have been measured to be
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
Get Book Here
Book Description
![Hadronic Decays of [Psi] and One Photon Intermediate State PDF](https://books.google.com/books/content/images/frontcover/NXRiYgEACAAJ?fife=w80-h100)
Author: Kunihiko Terasaki
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
This is a review of J/psi physics from e/sup +/e− colliders presented at the Charm Workshop in Beijing, China. The review includes a brief historical summary of J/psi physics, a general discussion of theoretical models and detailed results on radiative and hadronic J/psi decays from the Mark III, DM2, Crystal Ball and MARK II groups. 119 refs., 13 figs., 10 tabs.
Author: Sergio Grancagnolo
Publisher:
ISBN:
Category :
Languages : en
Pages : 106
Get Book Here
Book Description
The work is based on the analysis of the data collected at the BaBar experiment on the PEP-II collider at SLAC (Stanford Linear Accelerator Center, California) between 1999 and 2002. The data sample collected corresponds at 122.1 ± 0.6 ± 1.3 millions of BBbar pairs. The observation by BaBar of the DsJ*(2317)+ and DsJ(2460)+ mesons, discovered in 2003, raised a lot of interest for the spectroscopy of charmed hadrons. l reviewed theoretical explanations and recent experimental results. In the first part of the thesis , l studied the reconstruction efficiency of low energy pions produced in the D* meson decay. In the second part I studied the production of the new DsJ particles in the hadronic decays of the B meson with two charm quarks. To reach this goal l developed the technique to reconstruct the decays B-->DsJD(*). After clear evidence of signal on all the decay modes under study (some of them seen for the first time in the world !), l estimated the number of signal events and l computed the corresponding branching ratios, after background rejection, reconstruction efficiency evaluatlon and systematic errors estimation. The order of magnitude of the branching ratios is 10/\-3; these values are slightly smaller than the corresponding of the decays B-->DsD(*) , expected of the same order in the factorisatlon hypothesis. Using angular analysis l measured the quantum numbers of DsJ(2460)+, obtaining a result compatible with the hypothesis JP=1+
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Theoretical ideas about the new particle spectrum and dynamics are compared with the experimental data for the radiative transitions and decays of psi' and psi.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Roger Alan Lee
Publisher:
ISBN:
Category : Particles (Nuclear physics)
Languages : en
Pages : 572
Get Book Here
Book Description
