TY - JOUR
T1 - First Observation of D0-D-0 Oscillations in D0 →k+π-π+π- Decays and Measurement of the Associated Coherence Parameters
AU - (LHCb Collaboration)
AU - Aaij, R.
AU - Abellán Beteta, C.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Affolder, A.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Ali, S.
AU - Alkhazov, G.
AU - Alvarez Cartelle, P.
AU - Alves, A. A.
AU - Amato, S.
AU - Amerio, S.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Andreassi, G.
AU - Andreotti, M.
AU - Andrews, J. E.
AU - Appleby, R. B.
AU - Aquines Gutierrez, O.
AU - Archilli, F.
AU - D'Argent, P.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Auriemma, G.
AU - Baalouch, M.
AU - Bachmann, S.
AU - Back, J. J.
AU - Badalov, A.
AU - Baesso, C.
AU - Baldini, W.
AU - Barlow, R. J.
AU - Barschel, C.
AU - Barsuk, S.
AU - Barter, W.
AU - Batozskaya, V.
AU - Battista, V.
AU - Bay, A.
AU - Beaucourt, L.
AU - Beddow, J.
AU - Bedeschi, F.
AU - Bediaga, I.
AU - Bel, L. J.
AU - Calvo Gomez, M.
AU - Vilasis-Cardona, X.
N1 - Funding Information:
We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); FOM and NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MinES and FANO (Russia); MinECo (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); NSF (U.S.).
Publisher Copyright:
© 2016 CERN.
PY - 2016/6/17
Y1 - 2016/6/17
N2 - Charm meson oscillations are observed in a time-dependent analysis of the ratio of D0→K+π-π+π- to D0→K-π+π-π+ decay rates, using data corresponding to an integrated luminosity of 3.0 fb-1 recorded by the LHCb experiment. The measurements presented are sensitive to the phase-space averaged ratio of doubly Cabibbo-suppressed to Cabibbo-favored amplitudes rDK3π and the product of the coherence factor RDK3π and a charm mixing parameter yK3π′. The constraints measured are rDK3π=(5.67±0.12)×10-2, which is the most precise determination to date, and RDK3πyK3π′=(0.3±1.8)×10-3, which provides useful input for determinations of the CP-violating phase γ in B±→DK±, D→Kπ±ππ± decays. The analysis also gives the most precise measurement of the D0→K+π-π+π- branching fraction, and the first observation of D0-D-0 oscillations in this decay mode, with a significance of 8.2 standard deviations.
AB - Charm meson oscillations are observed in a time-dependent analysis of the ratio of D0→K+π-π+π- to D0→K-π+π-π+ decay rates, using data corresponding to an integrated luminosity of 3.0 fb-1 recorded by the LHCb experiment. The measurements presented are sensitive to the phase-space averaged ratio of doubly Cabibbo-suppressed to Cabibbo-favored amplitudes rDK3π and the product of the coherence factor RDK3π and a charm mixing parameter yK3π′. The constraints measured are rDK3π=(5.67±0.12)×10-2, which is the most precise determination to date, and RDK3πyK3π′=(0.3±1.8)×10-3, which provides useful input for determinations of the CP-violating phase γ in B±→DK±, D→Kπ±ππ± decays. The analysis also gives the most precise measurement of the D0→K+π-π+π- branching fraction, and the first observation of D0-D-0 oscillations in this decay mode, with a significance of 8.2 standard deviations.
UR - http://www.scopus.com/inward/record.url?scp=84975512199&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.116.241801
DO - 10.1103/PhysRevLett.116.241801
M3 - Article
AN - SCOPUS:84975512199
SN - 0031-9007
VL - 116
JO - Physical Review Letters
JF - Physical Review Letters
IS - 24
M1 - 241801
ER -