التفاصيل البيبلوغرافية
| العنوان: |
Radiative decays of the J/$\psi$ and evidence for a new heavy resonance |
| المؤلفون: |
Braunschweig, W., Martyn, H.-U., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., McNeely, W. A., Moffeit, K. C., Petersen, A., Schliwa, M., Sander, H. G., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Poelz, G., Ringel, J., Sauerberg, K., Schmueser, Peter, de Boer, W., Schmitz, Daniel, Buschhorn, G., Gunderson, B., Kotthaus, R., Lierl, H., Oberlack, H., Pretzl, K., Orito, S., Suda, T., Totsuka, Y., Yamada, S., Sturm, W., DASP Collaboration, Wallraff, W., Berkelman, Karl, Cords, D., Felst, R., Gadermann, E. |
| المصدر: |
(1977). doi:10.1016/0370-2693(77)90114-9 |
| سنة النشر: |
1977 |
| المجموعة: |
DESY Publication Database (PUBDB) |
| مصطلحات موضوعية: |
info:eu-repo/classification/ddc/530, ELECTRON POSITRON: ANNIHILATION, ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON: COLLIDING BEAMS, COLLIDING BEAMS: ELECTRON POSITRON, J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION: J/PSI(3100), J/PSI(3100): RADIATIVE DECAY, PHOTON: FINAL STATE, FINAL STATE: PHOTON, ETA(549), ETA(958), PI0: FINAL STATE, FINAL STATE: PI0, X(2830), FINAL STATE: (3PHOTON), J/PSI(3100): BRANCHING RATIO, RADIATIVE DECAY: WIDTH, WIDTH: RADIATIVE DECAY, MAGNETIC SPECTROMETER: DASP, DESY DORIS STOR: EXPERIMENTAL RESULTS, EXPERIMENTAL RESULTS: DESY DORIS STOR, J/PSI(3100) --> ETA(549) PHOTON, J/PSI(3100) --> ETA(958) PHOTON, J/PSI(3100) --> PI0 PHOTON, J/PSI(3100) --> X(2830) PHOTON, J/PSI(3100) --> 3PHOTON, 3.1 GEV-CMS |
| جغرافية الموضوع: |
DE |
| الوصف: |
The three photon final state produced in e + e − collisions has been measured at the mass of the J ψ resonance using the nonmagnetic part of the double arm spectrometer DASP. The decays J ψ → ηγ, η'γ and π o γ were observed and their branching ratios are given. A four standard deviation signal was observed in the γγ mass spectrum at a mass of (2.83 ± 0.03) GeV. An upper limit is given for the direct decay J ψ → 3γ . |
| نوع الوثيقة: |
report |
| اللغة: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/issn/1873-2445; info:eu-repo/semantics/altIdentifier/issn/0370-2693; https://bib-pubdb1.desy.de/record/395572; https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2017-12167%22 |
| الاتاحة: |
https://bib-pubdb1.desy.de/record/395572
https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2017-12167%22 |
| Rights: |
info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edsbas.2A26E612 |
| قاعدة البيانات: |
BASE |