The B-s(0)-(B) over bar (0)(s) oscillation frequency Delta m(s) is measured with 36 pb(-1) of data collected in pp collisions at = 7 TeV by the LHCb experiment at the Large Hadron Collider. A total of 1381 B-s(0) -> D-s(-) pi(+) and B-s(0) -> D-s(-) pi(+)pi(-)pi(+) signal decays are reconstructed, with average decay time resolutions of 44 fs and 36 fs, respectively. An oscillation signal with a statistical significance of 4.6 sigma is observed. The measured oscillation frequency is Delta m(s) = 17.63 +/- 0.11 (stat) +/-0.02 (syst)ps(-1) (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
Archilli, F., Carboni, G., Messi, R., Santovetti, E., The LHCb, C. (2012). Measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency Delta m(s) in B-s(0) -> D-s(-)(3)pi decays. PHYSICS LETTERS. SECTION B, 709(3), 177-184 [10.1016/j.physletb.2012.02.031].
Measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency Delta m(s) in B-s(0) -> D-s(-)(3)pi decays
Archilli, FMembro del Collaboration Group
;Carboni, GMembro del Collaboration Group
;Messi, RMembro del Collaboration Group
;Santovetti, EMembro del Collaboration Group
;
2012-01-01
Abstract
The B-s(0)-(B) over bar (0)(s) oscillation frequency Delta m(s) is measured with 36 pb(-1) of data collected in pp collisions at = 7 TeV by the LHCb experiment at the Large Hadron Collider. A total of 1381 B-s(0) -> D-s(-) pi(+) and B-s(0) -> D-s(-) pi(+)pi(-)pi(+) signal decays are reconstructed, with average decay time resolutions of 44 fs and 36 fs, respectively. An oscillation signal with a statistical significance of 4.6 sigma is observed. The measured oscillation frequency is Delta m(s) = 17.63 +/- 0.11 (stat) +/-0.02 (syst)ps(-1) (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
