Title
Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons
Date Issued
06 May 2011
Access level
open access
Resource Type
journal article
Author(s)
Aaltonen T.
Álvarez González B.
Amerio S.
Amidei D.
Anastassov A.
Annovi A.
Antos J.
Apollinari G.
Appel J.A.
Apresyan A.
Arisawa T.
Artikov A.
Asaadi J.
Ashmanskas W.
Auerbach B.
Aurisano A.
Azfar F.
Badgett W.
Barbaro-Galtieri A.
Barnes V.E.
Barnett B.A.
Barria P.
Bartos P.
Bauce M.
Bauer G.
Bedeschi F.
Beecher D.
Behari S.
Bellettini G.
Bellinger J.
Benjamin D.
Beretvas A.
Bhatti A.
Binkley M.
Bisello D.
Bizjak I.
Bland K.R.
Blumenfeld B.
Bocci A.
Bodek A.
Bortoletto D.
Boudreau J.
Boveia A.
Brau B.
Brigliadori L.
Brisuda A.
Bromberg C.
Brucken E.
Bucciantonio M.
Budagov J.
Budd H.S.
Budd S.
Burkett K.
Busetto G.
Bussey P.
Buzatu A.
Calancha C.
Camarda S.
Campanelli M.
Campbell M.
Canelli F.
Canepa A.
Carls B.
Carlsmith D.
Carosi R.
Carrillo S.
Carron S.
Casal B.
Casarsa M.
Castro A.
Catastini P.
Cauz D.
Cavaliere V.
Cavalli-Sforza M.
Cerri A.
Cerrito L.
Chen Y.C.
Chertok M.
Chiarelli G.
Chlachidze G.
Chlebana F.
Cho K.
Chokheli D.
Chou J.P.
Chung W.H.
Chung Y.S.
Ciobanu C.I.
Ciocci M.A.
Clark A.
Compostella G.
Convery M.E.
Conway J.
Corbo M.
Cordelli M.
Cox C.A.
Cox D.J.
Crescioli F.
Cuenca Almenar C.
Cuevas J.
Culbertson R.
Abstract
We report measurements of direct CP-violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 1fb-1 of integrated luminosity, we obtain the first measurements of direct CP violation in bottom strange mesons, ACP(Bs0→K -π+)=+0.39±0.15(stat)±0.08(syst), and bottom baryons, ACP(Λb0→pπ-)=+0. 03±0.17(stat)±0.05(syst) and ACP(Λb0→ pK-)=+0.37±0.17(stat)±0.03(syst). In addition, we measure CP violation in B0→K+π- decays with 3.5σ significance, ACP(B0→K+π-)=- 0.086±0.023(stat)±0.009(syst), in agreement with the current world average. Measurements of branching fractions of Bs0→K+K - and B0→π+π- decays are also updated. © 2011 American Physical Society.
Volume
106
Issue
18
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Física atómica, molecular y química
Scopus EID
2-s2.0-79960760533
Source
Physical Review Letters
ISSN of the container
10797114
Sponsor(s)
Science and Technology Facilities Council - PP/E000444/1, ST/H001026/1, ST/H001026/2, ST/H001069/1, ST/H001077/1.
Japan Society for the Promotion of Science - 18071002.
Sources of information:
Directorio de Producción Científica
Scopus