In a previous publication, measurements of the depolarization of a stored proton beam by interaction with a co-propagating unpolarized electron beam at low relative energy have been presented and an upper limit of about 3 ×107 b for the electron-proton spin-flip cross-section was determined. A refined analysis presented in this paper reduces the previous upper limit by a factor of three by the introduction of a new procedure that also makes use of non-identified particles.

New experimental upper limit of the electron–proton spin-flip cross-section

LENISA, Paolo;BARION, Luca;BERTELLI, Susanna;CARASSITI, Vittore;CIULLO, Giuseppe;CONTALBRIGO, Marco;FERRETTI, Paola;GUIDOBONI, Greta;PAPPALARDO, Luciano Libero;PESCE, Andrea;STATERA, Marco;
2014

Abstract

In a previous publication, measurements of the depolarization of a stored proton beam by interaction with a co-propagating unpolarized electron beam at low relative energy have been presented and an upper limit of about 3 ×107 b for the electron-proton spin-flip cross-section was determined. A refined analysis presented in this paper reduces the previous upper limit by a factor of three by the introduction of a new procedure that also makes use of non-identified particles.
D., Oellers; C., Weidemann; Lenisa, Paolo; H. O., Meyer; F., Rathmann; S., Trusov; W., Augustyniak; Z., Bagdasarian; Barion, Luca; S., Barsov; U., Bechstedt; Bertelli, Susanna; Carassiti, Vittore; D., Chiladze; Ciullo, Giuseppe; Contalbrigo, Marco; Ferretti, Paola; S., Dymov; R., Engels; M., Gaisser; R., Gebel; P., Goslawski; K., Grigoriev; Guidoboni, Greta; A., Kacharava; A., Khoukaz; A., Kulikov; H., Kleines; G., Langenberg; A., Lehrach; N., Lomidze; B., Lorentz; G., Macharashvili; R., Maier; B., Marianski; S., Martin; D., Mchedlishvili; S., Merzliakov; I. N., Meshkov; M., Mielke; M., Mikirtychiants; S., Mikirtychiants; A., Nass; N., Nikolaev; M., Nioradze; M., Papenbrock; Pappalardo, Luciano Libero; Pesce, Andrea; D., Prasuhn; J., Sarkadi; R., Schleichert; A., Smirnov; H., Seyfarth; Statera, Marco; E., Steffens; H. J., Stein; H., Stockhorst; H., Stro¨her; M., Tabidze; G., Tagliente; P., Tho¨rngren Engblom; A., Trzcinski; Y., Valdau; A., Vasiliev; P., Wüstner; P., Zupranski
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1996414
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 2
social impact