Measurement of the CKM angle gamma using B (0) -> DK (*0) with D -> K-S(0) pi (+) pi (-) decays
A model-dependent amplitude analysis of the decay B (0) -> D(K (S)
(0) pi (+) pi (-))K (au 0) is performed using proton-proton collision
data corresponding to an integrated luminosity of 3.0 fb(-1), recorded
at and 8 TeV by the LHCb experiment. The CP violation observables x
(+/-) and y (+/-), sensitive to the CKM angle gamma, are measured to be
x- = 0.15 +/- 0.14 +/- 0.03 +/- 0.01; y- = 0.25 +/- 0.15 +/- 0.06 +/-
0.01; x+ = 0.05 +/- 0.24 +/- 0.04 +/- 0.01; y+ = 0.65(-0.23)(+0.24) +/-
0.08 +/- 0.01;
where the first uncertainties are statistical, the second systematic and
the third arise from the uncertainty on the D -> K (S) (0) pi (+) pi
(-) amplitude model. These are the most precise measurements of these
observables. They correspond to gamma = (80 (- 22) (+ 21) )A degrees and
, where is the magnitude of the ratio of the suppressed and favoured B
(0) -> DK (+) pi (-) decay amplitudes, in a K pi mass region of +/-
50 MeV around the K (*)(892)(0) mass and for an absolute value of the
cosine of the K (*0) decay angle larger than 0.4.
Title:
| Measurement of the CKM angle gamma using B (0) -> DK (*0) with D -> K-S(0) pi (+) pi (-) decays | |
| Authors: | Aaij, R. Abellan Beteta, C. Adeva, B. |
| Keywords: | B physics Hadron-Hadron scattering (experiments) Flavor physics CP violation CKM angle gamma |
| Issue Date: | 2016 |
| Publisher: | SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA |
| Citation: | ISIKNOWLEDGE |
| Abstract: | A model-dependent amplitude analysis of the decay B (0) -> D(K (S) (0) pi (+) pi (-))K (au 0) is performed using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb(-1), recorded at and 8 TeV by the LHCb experiment. The CP violation observables x (+/-) and y (+/-), sensitive to the CKM angle gamma, are measured to be x- = 0.15 +/- 0.14 +/- 0.03 +/- 0.01; y- = 0.25 +/- 0.15 +/- 0.06 +/- 0.01; x+ = 0.05 +/- 0.24 +/- 0.04 +/- 0.01; y+ = 0.65(-0.23)(+0.24) +/- 0.08 +/- 0.01; where the first uncertainties are statistical, the second systematic and the third arise from the uncertainty on the D -> K (S) (0) pi (+) pi (-) amplitude model. These are the most precise measurements of these observables. They correspond to gamma = (80 (- 22) (+ 21) )A degrees and , where is the magnitude of the ratio of the suppressed and favoured B (0) -> DK (+) pi (-) decay amplitudes, in a K pi mass region of +/- 50 MeV around the K (*)(892)(0) mass and for an absolute value of the cosine of the K (*0) decay angle larger than 0.4. |
| Description: | JOURNAL OF HIGH ENERGY PHYSICS Issue: 8 Article Number: 137 ; 30 p. ; TNS06551 |
| URI: | http://repository.vnu.edu.vn/handle/VNU_123/29979 |
| Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
Nhận xét
Đăng nhận xét