Aubert, B;
Barate, R;
Boutigny, D;
Couderc, F;
Gaillard, JM;
Hicheur, A;
Karyotakis, Y;
... BaBar Collaboration; + view all
(2004)
Direct CP violating asymmetry in B-0 -> K+pi(-) decays.
PHYS REV LETT
, 93
(13)
, Article 131801. 10.1103/PhysRevLett.93.131801.
![]() Preview |
PDF
1303678.pdf Download (792kB) |
Abstract
We present a measurement of the direct CP violating asymmetry in the decay B-0-->K(+)pi(-) using a data sample of 227x10(6) Y(4S)-->B (B) over bar decays ollected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. We observe a total signal yield of n(K)(-)pi(+)+n(K)(+)pi(-)=1606+/-51 decays and measure the asymmetry (n(K)(-)pi(+)-n(K)(+)pi(-))/(n(K)(-)pi(+)+n(K)(+)pi(-))=-0.133+/-0.030(stat)+/-0.009(syst). The probability of observing such an asymmetry in the absence of direct CP violation is 1.3x10(-5), corresponding to 4.2 standard deviations.
Type: | Article |
---|---|
Title: | Direct CP violating asymmetry in B-0 -> K+pi(-) decays |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevLett.93.131801 |
Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.93.131801 |
Language: | English |
Additional information: | The American Physical Society |
Keywords: | NEUTRAL KAON |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
URI: | https://discovery.ucl.ac.uk/id/eprint/1303678 |



1. | ![]() | 2 |
2. | ![]() | 1 |
3. | ![]() | 1 |
4. | ![]() | 1 |
Archive Staff Only
![]() |
View Item |