The three photon final state produced in $e^+ e^-$ collision at 3.6-GeV and at the $\psi'$

+X%282830%29+PHOTON%22&type=SU">PSI(3700) --> X(2830) PHOTON, ETA(549) [ELECTROPRODUCTION], WIDTH [RADIATIVE DECAY], DESY DORIS STOR [EXPERIMENTAL RESULTS], ELECTROPRODUCTION [X(2830)], DASP [MAGNETIC DETECTOR], ddc:530, ELECTRON POSITRON --> X(2830) PHOTON, COLLIDING BEAMS [ELECTRON POSITRON], ELECTRON POSITRON --> ETA(549) PHOTON, ELECTRON POSITRON [COLLIDING BEAMS], RADIATIVE DECAY [PSI(3700)], RADIATIVE DECAY [WIDTH], ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION [PSI(3700)], BOUNDARY CONDITION [WIDTH], ANNIHILATION [ELECTRON POSITRON], PSI(3700) [ELECTROPRODUCTION], X(2830) [ELECTROPRODUCTION] -->
Popis: The three photon final state produced in e + e − collisions at 3.6 GeV and at the mass of the ψ′ resonance has been measured using the nonmagnetic part of the double arm spectrometer DASP. A total of 31 events is observed outside the resonance region compared to 35.1 events predicted from QED. At the mass of the ψ′ 49 events are observed compared to 37.2 events expected from QED. Limits on radiative decays via intermediate states are given.
Jazyk: English
DOI: 10.1016/0370-2693(77)90115-0
Přístupová URL adresa: https://explore.openaire.eu/search/publication?articleId=od______1108::e1866be812f58306d2012213f25e2e84
https://bib-pubdb1.desy.de/record/395573
Rights: OPEN
Přírůstkové číslo: edsair.od......1108..e1866be812f58306d2012213f25e2e84
Autor: Braunschweig, W., Martyn, H.-U., Gadermann, E., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., McNeely, W. A., Moffeit, K. C., Petersen, A., Sander, H. G., Rusch, R., Schliwa, M., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Poelz, G., Ringel, J., Sauerberg, K., Schmueser, Peter, de Boer, W., Schmitz, D., 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., Fries, R.
Jazyk: angličtina
Rok vydání: 1977
Předmět:
PHOTON [FINAL STATE]
QUANTUM ELECTRODYNAMICS
3.7 GEV-CMS [3.6]
FINAL STATE [PHOTON]
BOUNDARY CONDITION [TOTAL CROSS SECTION]
(3PHOTON) [FINAL STATE]
EXPERIMENTAL RESULTS [DESY DORIS STOR]
BRANCHING RATIO [PSI(3700)]
ELECTROPRODUCTION [ETA(549)]
PSI(3700) --> X(2830) PHOTON
ETA(549) [ELECTROPRODUCTION]
WIDTH [RADIATIVE DECAY]
DESY DORIS STOR [EXPERIMENTAL RESULTS]
ELECTROPRODUCTION [X(2830)]
DASP [MAGNETIC DETECTOR]
ddc:530
ELECTRON POSITRON --> X(2830) PHOTON
COLLIDING BEAMS [ELECTRON POSITRON]
ELECTRON POSITRON --> ETA(549) PHOTON
ELECTRON POSITRON [COLLIDING BEAMS]
RADIATIVE DECAY [PSI(3700)]
RADIATIVE DECAY [WIDTH]
ELECTRON POSITRON [ANNIHILATION]
ELECTROPRODUCTION [PSI(3700)]
BOUNDARY CONDITION [WIDTH]
ANNIHILATION [ELECTRON POSITRON]
PSI(3700) [ELECTROPRODUCTION]
X(2830) [ELECTROPRODUCTION]
Zdroj: (1977). doi:10.1016/0370-2693(77)90115-0
DOI: 10.1016/0370-2693(77)90115-0
Popis: The three photon final state produced in e + e − collisions at 3.6 GeV and at the mass of the ψ′ resonance has been measured using the nonmagnetic part of the double arm spectrometer DASP. A total of 31 events is observed outside the resonance region compared to 35.1 events predicted from QED. At the mass of the ψ′ 49 events are observed compared to 37.2 events expected from QED. Limits on radiative decays via intermediate states are given.
Databáze: OpenAIRE
Externí odkaz: