We present a measurement of sigma(p (p) over bar -> W)xB(W -> e nu) at root s=1.96 TeV, using electrons identified in the forward region (1.2 <|eta|< 2.8) of the CDF II detector, in 223 pb(-1) of data. We measure sigma xB=2796 +/- 13(stat)(-90)(+95)(syst)+/- 162(lum) pb. Combining this result with a previous CDF measurement obtained using electrons in the central region (|eta|less than or similar to 1), we present the first measurement of the ratio of central-electron to forward-electron W partial cross sections R(exp)=0.925 +/- 0.006(stat)+/- 0.032(syst), consistent with theoretical predictions using Coordinated Theoretical-Experimental Project on QCD (CTEQ) and Martin-Roberts-Stirling-Thorne (MRST) parton distribution functions.

First measurement of the ratio of central-electron to forward-electron W partial cross sections in p(p)over-bar collisions at root s=1.96 TeV / Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M.g., Amerio, S., Amidei, D., Anastassov, A., Anikeev, K., Annovi, A., Antos, J., Aoki, M., Apollinari, G., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., AZZI BACCHETTA, P., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 98:(2007). [10.1103/physrevlett.98.251801]

First measurement of the ratio of central-electron to forward-electron W partial cross sections in p(p)over-bar collisions at root s=1.96 TeV

DE CECCO, Sandro;DIONISI, Carlo;GIAGU, Stefano;MARGAROLI, Fabrizio;IORI, Maurizio;MESSINA, Andrea;SORRENTINO, Lucia;
2007

Abstract

We present a measurement of sigma(p (p) over bar -> W)xB(W -> e nu) at root s=1.96 TeV, using electrons identified in the forward region (1.2 <|eta|< 2.8) of the CDF II detector, in 223 pb(-1) of data. We measure sigma xB=2796 +/- 13(stat)(-90)(+95)(syst)+/- 162(lum) pb. Combining this result with a previous CDF measurement obtained using electrons in the central region (|eta|less than or similar to 1), we present the first measurement of the ratio of central-electron to forward-electron W partial cross sections R(exp)=0.925 +/- 0.006(stat)+/- 0.032(syst), consistent with theoretical predictions using Coordinated Theoretical-Experimental Project on QCD (CTEQ) and Martin-Roberts-Stirling-Thorne (MRST) parton distribution functions.
2007
01 Pubblicazione su rivista::01a Articolo in rivista
First measurement of the ratio of central-electron to forward-electron W partial cross sections in p(p)over-bar collisions at root s=1.96 TeV / Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M.g., Amerio, S., Amidei, D., Anastassov, A., Anikeev, K., Annovi, A., Antos, J., Aoki, M., Apollinari, G., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., AZZI BACCHETTA, P., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 98:(2007). [10.1103/physrevlett.98.251801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/357533
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