A study of $$C\!P$$ C P violation in the decays $${{B} ^\pm } \rightarrow [{{K} ^+} {{K} ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^{\pm }$$ B ± → [ K + K - π + π - ] D h ± ( $$h = K, \pi $$ h = K , π ) and $${{B} ^\pm } \rightarrow [{{\uppi } ^+} {{\uppi } ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^{\pm }$$ B ± → [ π + π - π + π - ] D h ±
Name
10052_2023_Article_11560.pdf
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Checksum (MD5)
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Author(s)
Aaij, R.
Abdelmotteleb, A. S. W.
Beteta, C. A.
Abudinén, F.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Adlarson, P.
Afsharnia, H.
Agapopoulou, C.
Date Issued
June 29, 2023
Publisher
Springer Berlin Heidelberg
Citation
The European Physical Journal C. 2023 Jun 29;83(6):547
Version
Final published version
Abstract
Abstract
The first study of
$$C\!P$$
C
P
violation in the decay mode
$${{B} ^\pm } \rightarrow [{{K} ^+} {{K} ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^\pm $$
B
±
→
[
K
+
K
-
π
+
π
-
]
D
h
±
, with
$$h=K,\pi $$
h
=
K
,
π
, is presented, exploiting a data sample of proton–proton collisions collected by the LHCb experiment that corresponds to an integrated luminosity of
$$9\text {\,fb} ^{-1} $$
9
\,fb
-
1
. The analysis is performed in bins of phase space, which are optimised for sensitivity to local
$$C\!P$$
C
P
asymmetries.
$$C\!P$$
C
P
-violating observables that are sensitive to the angle
$$\gamma $$
γ
of the Unitarity Triangle are determined. The analysis requires external information on charm-decay parameters, which are currently taken from an amplitude analysis of LHCb data, but can be updated in the future when direct measurements become available. Measurements are also performed of phase-space integrated observables for
$${{B} ^\pm } \rightarrow [{{K} ^+} {{K} ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^\pm $$
B
±
→
[
K
+
K
-
π
+
π
-
]
D
h
±
and
$${{B} ^\pm } \rightarrow [{{\uppi } ^+} {{\uppi } ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^\pm $$
B
±
→
[
π
+
π
-
π
+
π
-
]
D
h
±
decays.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-023-11560-5
