Measurement of the W charge asymmetry in the W→μν decay mode in pp collisions at s=7 TeV with the ATLAS detector

This Letter reports a measurement of the muon charge asymmetry from W bosons produced in proton–proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the W→μν decay mode as a function of the muon pseudorapidity using a data sample co...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Physics letters. B 2011-06, Vol.701 (1), p.31-49
Hauptverfasser:	Aad, G., Aderholz, M., Adye, T., Arabidze, G., Barillari, T., Barton, A.E., Batley, J.R., Bednyakov, V.A., Buszello, C.P., Chekanov, S., Cranmer, K., Davidson, N., Dawe, E., De, K., De Vivie De Regie, J.B., Demers, S., Di Micco, B., do Vale, M.A.B., Dopke, J., Dotti, A., Düren, M., Erdmann, J., Errede, S., Formica, A., Gaycken, G., George, S., Glatzer, J., Glonti, G.L., Gross, E., Guo, B., Harenberg, T., Harris, O.M., Hartjes, F., Hauser, R., Henderson, R.C.W., Jia, J., Jiang, Y., Kawagoe, K., Khandanyan, H., König, A.C., Koffas, T., Kotov, S., Kroll, J., Lebedev, A., Mackeprang, R., Magradze, E., Mangeard, P.S., Manjavidze, I.D., Marx, M., Mehdiyev, R., Menke, S., Meroni, C., Mohr, W., Müller, T.A., Nikolopoulos, K., Oh, A., Padilla Aranda, C., Paolone, V., Pastore, Fr, Pataraia, S., Petridou, C., Porter, R., Psoroulas, S., Renaud, A., Romeo, G., Rousseau, D., Salt, J., Sauvage, G., Schmitt, C., Schumacher, M., Sevior, M.E., Shabalina, E., Shao, Q.T., Sloan, T.J., Smakhtin, V., Smirnova, L.N., Snesarev, A.A., Solodkov, A.A., Soukharev, A., Stahl, T., Strandberg, S., Sumida, T., Takeshita, T., Teixeira-Dias, P., Treis, J., Tricoli, A., Trivedi, A., Tsuno, S., Ukegawa, F., Urrejola, P., Vannucci, F., Veneziano, S., Viret, S., Vlachos, S., Wagner, W., Wicek, F., Wildt, M.A., Yilmaz, M., Yuan, L., Zhang, Z.
Format:	Artikel
Sprache:	eng
Schlagworte:	Charge asymmetry muon charge asymmetry Muon decay mode Parton distribution function PHYSICS OF ELEMENTARY PARTICLES AND FIELDS W production
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	This Letter reports a measurement of the muon charge asymmetry from W bosons produced in proton–proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the W→μν decay mode as a function of the muon pseudorapidity using a data sample corresponding to a total integrated luminosity of 31 pb−1. The results are compared to predictions based on next-to-leading order calculations with various parton distribution functions. This measurement provides information on the u and d quark momentum fractions in the proton.
ISSN:	0370-2693 1873-2445
DOI:	10.1016/j.physletb.2011.05.024