Combination of inclusive and differential tt¯ charge asymmetry measurements using ATLAS and CMS data at √s = 7 and 8 TeV
Aaboud M., Aad G., Abbott B., Abdinov O., Abeloos B., Abidi SH., Abouzeid OS., Abraham NL., Abramowicz H., Abreu H., Abulaiti Y., Acharya BS., Adachi S., Adamczyk L., Adelman J., Adersberger M., Adye T., Affolder AA., Afik Y., Agheorghiesei C., Aguilar-Saavedra JA., Ahlen SP., Ahmadov F., Aielli G., Akatsuka S., Åkesson TP., Akilli E., Akimov AV., Alberghi GL., Albert J., Albicocco P., Alconada Verzini MJ., Alderweireldt SC., Aleksa M., Aleksandrov IN., Alexa C., Alexander G., Alexopoulos T., Alhroob M., Ali B., Aliev M., Alimonti G., Alison J., Alkire SP., Allbrooke BM., Allen BW., Allport PP., Aloisio A., Alonso A., Alonso F., Alpigiani C., Alshehri AA., Alstaty MI., Alvarez Gonzalez B., Álvarez Piqueras D., Alviggi MG., Amadio BT., Amaral Coutinho Y., Amelung C., Amidei D., Amor Dos Santos SP., Amoroso S., Anastopoulos C., Ancu LS., Andari N., Andeen T., Anders CF., Anders JK., Anderson KJ., Andreazza A., Andrei V., Angelidakis S., Angelozzi I., Angerami A., Anisenkov AV., Annovi A., Antel C., Antonelli M., Antonov A., Antrim DJ., Anulli F., Aoki M., Aperio Bella L., Arabidze G., Arai Y., Araque JP., Araujo Ferraz V., Arce AT., Ardell RE., Arduh FA., Arguin JF., Argyropoulos S., Armbruster AJ., Armitage LJ., Arnaez O., Arnold H., Arratia M., Arslan O., Artamonov A., Artoni G.
© CERN, for the benefit of the ATLAS-CMS Collaboration. This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centreof- mass energies of 7 and 8TeV. The data correspond to integrated luminosities of about 5 and 20 fb–1for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are ACLHC7= 0:005±0:007 (stat) ±0:006 (syst) at 7TeV and ACLHC7= 0:0055 ± 0:0023 (stat) ± 0:0025 (syst) at 8TeV. These values, as well as the combination of AC measurements as a function of the invariant mass of the [formula presented] system at 8TeV, are consistent with the respective standard model predictions.