Cross sections for e+p neutral current deep inelastic scattering have been measured at a center-of-mass energy of sqrt(s)=318 GeV with the ZEUS detector at HERA using an integrated luminosity of 63.2 pb-1. The double-differential cross section, d2sigma/dxdQ2, is presented for 200 GeV2<Q2<30 000 GeV2 and for 0.005<x<0.65. The single-differential cross sections dsigma/dQ2, dsigma/dx and dsigma/dy are presented for Q2>200 GeV2. The effect of Z-boson-exchange is seen in dsigma/dx measured for Q2>10 000 GeV2. The data presented here were combined with ZEUS e+p neutral current data taken at sqrt(s)=300 GeV and the structure function F2em was extracted. All results agree well with the predictions of the Standard Model.
High-Q^2 neutral current cross section in e^+p deep inelastic scattering at sqrt(s)=318 GeV.
MONACO, Vincenzo;SACCHI, Roberto;SOLANO, Ada Maria;
2004-01-01
Abstract
Cross sections for e+p neutral current deep inelastic scattering have been measured at a center-of-mass energy of sqrt(s)=318 GeV with the ZEUS detector at HERA using an integrated luminosity of 63.2 pb-1. The double-differential cross section, d2sigma/dxdQ2, is presented for 200 GeV2
| File | Dimensione | Formato | |
|---|---|---|---|
|
pippo.pdf
Accesso riservato
Tipo di file:
POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione
958.81 kB
Formato
Adobe PDF
|
958.81 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
