We present measurements of the forward-backward charge asymmetry in top pair production using 1.9??fb-1 of pp? collisions at ?s=1.96??TeV recorded with the Collider Detector at Fermilab II. Correcting for acceptance and measurement dilutions we obtain parton-level asymmetries of AFBpp? =0.17±0.08 in the pp? frame and AFBtt? =0.24±0.14 in the tt? frame. The values are consistent with the standard model expectation and disfavor exotic production mechanisms with significant negative values.

Forward-Backward Asymmetry in Top-Quark Production in p(p)over-bar Collisions at root s=1.96 TeV / Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M.g., Gonzalez, B.a., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Apresyan, A., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., Azzurri, P., Badgett, W., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 101:(2008). [10.1103/PhysRevLett.101.202001]

Forward-Backward Asymmetry in Top-Quark Production in p(p)over-bar Collisions at root s=1.96 TeV

CECCO S;DIONISI, Carlo;GIAGU, Stefano;MARGAROLI, Fabrizio;IORI, Maurizio;LUCI, Claudio;
2008

Abstract

We present measurements of the forward-backward charge asymmetry in top pair production using 1.9??fb-1 of pp? collisions at ?s=1.96??TeV recorded with the Collider Detector at Fermilab II. Correcting for acceptance and measurement dilutions we obtain parton-level asymmetries of AFBpp? =0.17±0.08 in the pp? frame and AFBtt? =0.24±0.14 in the tt? frame. The values are consistent with the standard model expectation and disfavor exotic production mechanisms with significant negative values.
2008
01 Pubblicazione su rivista::01a Articolo in rivista
Forward-Backward Asymmetry in Top-Quark Production in p(p)over-bar Collisions at root s=1.96 TeV / Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M.g., Gonzalez, B.a., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Apresyan, A., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., Azzurri, P., Badgett, W., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 101:(2008). [10.1103/PhysRevLett.101.202001]
File allegati a 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/11573/357597
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 177
  • ???jsp.display-item.citation.isi??? 184
social impact