Measurement of the D± production asymmetry in 7 TeV pp collisions

• Published in: Physics letters. B 2013-01, Vol.718 (3), p.902-909
• Main Authors: Adinolfi, M., Adrover, C., Alkhazov, G., Anderlini, L., Aslanides, E., Back, J.J., Baesso, C., Bencivenni, G., Benson, S., Bocci, V., Bondar, A., Bowcock, T.J.V., Bozzi, C., Brown, H., Büchler-Germann, A., Carbone, A., Cardinale, R., Chen, P., Chiapolini, N., Closier, J., Cogneras, E., Cunliffe, S., De Paula, L., Dordei, F., Dovbnya, A., Dziurda, A., Eisenhardt, S., Eklund, L., Fernandez Albor, V., Filippov, S., Frei, C., Garosi, P., Gershon, T., Ghez, Ph, Gomes, A., Gordon, H., Graciani Diaz, R., Gys, T., Hansmann-Menzemer, S., Harnew, S.T., He, J., Hicks, E., Iakovenko, V., Jaeger, A., Jaton, P., Jones, C.R., Jost, B., Kaballo, M., Ketel, T., Koopman, R.F., Kudryavtsev, V., Lacarrere, D., Lai, A., Li, Y., Lindner, R., Linn, C., Lopes, J.H., Maev, O., Mangiafave, N., Marconi, U., Martellotti, G., McCarthy, J., Minard, M.-N., Muheim, F., Muster, B., Nguyen-Mau, C., Niess, V., Nomerotski, A., Oggero, S., Owen, P., Perez Trigo, E., Pietrzyk, B., Puig Navarro, A., Rauschmayr, N., Redford, S., Romanovsky, V., Ruf, T., Sabatino, G., Sail, P., Santinelli, R., Schmelling, M., Sciascia, B., Sciubba, A., Seco, M., Serra, N., Shears, T., Shires, A., Skwarnicki, T., Sparkes, A., Stone, S., Swientek, S., Teubert, F., Uwer, U., Vazquez Regueiro, P., Viaud, B., Voong, D., Vorobyev, A., Vorobyev, V., Wilson, F.F., Wotton, S.A.
• Format: Article
• Language: English
• Subjects: High Energy Physics - Experiment; Physics
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/j.physletb.2012.11.038

The asymmetry in the production cross-section σ of D± mesons,AP=σ(D+)−σ(D−)σ(D+)+σ(D−), is measured in bins of pseudorapidity η and transverse momentum pT within the acceptance of the LHCb detector. The result is obtained with a sample of D+→KS0π+ decays corresponding to an integrated luminosity of 1.0 fb−1, collected in pp collisions at a centre of mass energy of 7 TeV at the Large Hadron Collider. When integrated over the kinematic range 2.0