5 research outputs found
Precision measurement of the B0s-overlineB{}^0_s oscillation frequency with the decay B0s â D-sÏ+
A key ingredient to searches for physics beyond the Standard Model in B0s mixing phenomena is the measurement of the B0s- oscillation frequency, which is equivalent to the mass difference Îms of the B0s mass eigenstates. Using the world's largest B0s meson sample accumulated in a dataset, corresponding to an integrated luminosity of 1.0 fbâ1, collected by the LHCb experiment at the CERN LHC in 2011, a measurement of Îms is presented. A total of about 34â000 B0s â DâsÏ+ signal decays are reconstructed, with an average decay time resolution of 44 fs. The oscillation frequency is measured to be Îms = 17.768 ± 0.023 (stat) ±â0.006 (syst) psâ1, which is the most precise measurement to date
Precision measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency with the decay B-s(0) -> D-s(-)pi(+)
A key ingredient to searches for physics beyond the Standard Model in B-s(0) mixing phenomena is the measurement of the B-s(0)-(B) over bar (0)(s) oscillation frequency, which is equivalent to the mass difference Delta m(s) of the B-s(0) mass eigenstates. Using the world''s largest B-s(0) meson sample accumulated in a dataset, corresponding to an integrated luminosity of 1.0 fb(-1), collected by the LHCb experiment at the CERN LHC in 2011, a measurement of Delta m(s) is presented. A total of about 34 000 B-s(0) -> D-s(-)pi(+) signal decays are reconstructed, with an average decay time resolution of 44 fs. The oscillation frequency is measured to be Delta m(s) = 17.768 +/- 0.023 (stat) +/- 0.006 (syst) ps(-1), which is the most precise measurement to date
Precision measurement of the B[0 over s]â[â over B][0 over s] oscillation frequency with the decay B[0 over s]âD[â over s]Ï[superscript +]
A key ingredient to searches for physics beyond the Standard Model in B[0 over s] mixing phenomena is the measurement of the B[0 over s]â[â over B][0 over s] oscillation frequency, which is equivalent to the mass difference Îm[subscript s] of the B[0 over s] mass eigenstates. Using the world's largest B[0 over s] meson sample accumulated in a dataset, corresponding to an integrated luminosity of 1.0 fb[superscript â1], collected by the LHCb experiment at the CERN LHC in 2011, a measurement of Îm[subscript s] is presented. A total of about 34â000 B[0 over s] â D[â over s]Ï[superscript +] signal decays are reconstructed, with an average decay time resolution of 44 fs. The oscillation frequency is measured to be Îm[subscript s] = 17.768 ± 0.023 (stat) ±â0.006 (syst) ps[superscript â1], which is the most precise measurement to date.National Science Foundation (U.S.