Measurement of branching fractions and $CP$ asymmetries for $D_s^{+} \rightarrow K^+ (\eta, \pi^0) $ and $D_s^{+} \rightarrow \pi^+ (\eta, \pi^0)$ decays at Belle

Guan, Y.; Schwartz, A.J.; Kinoshita, K.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D.M.; Atmacan, H.; Aulchenko, V.; Aushev, T.

doi:10.1103/PhysRevD.103.112005

Measurement of branching fractions and $CP$ asymmetries for $D_s^{+} \rightarrow K^+ (\eta, \pi^0)$ and $D_s^{+} \rightarrow \pi^+ (\eta, \pi^0)$ decays at Belle

Belle

Collaboration

•

Y. Guan
(
- Cincinnati U.
)

Mar 17, 2021

11 pages

Published in:

Phys.Rev.D 103 (2021) 112005

Published: Jun 9, 2021

e-Print:

2103.09969 [hep-ex]

DOI:

10.1103/PhysRevD.103.112005

PDG:

{{\mathit D}_{{{s}}}^{+}}

\rightarrow

{{\mathit \eta}}{{\mathit \pi}^{+}}

Report number:

Belle Preprint 2021-04; KEK Preprint 2020-46; UC Preprint UCHEP-21-02

Experiments:

KEK-BF-BELLE

View in:

reference search16 citations

Citations per year

Abstract: (arXiv)

We report measurements of the branching fractions and

CP

asymmetries for

D_s^{+} \rightarrow K^{+} \eta

,

D_s^{+} \rightarrow K^{+} \pi^0

, and

D_s^{+} \rightarrow \pi^{+} \eta

decays, and the branching fraction for

D_s^{+} \rightarrow \pi^{+} \pi^0

. Our results are based on a data sample corresponding to an integrated luminosity of 921 fb

^{-1}

collected by the Belle detector at the KEKB

e^+e^-

asymmetric-energy collider. Our measurements of

CP

asymmetries in these decays are the most precise to-date; no evidence for

CP

violation is found.

Note:

11 pages, 4 figures

electron positron: annihilation
electron positron: colliding beams
D/s+: branching ratio: measured
asymmetry: CP
CP: violation
D/s+: hadronic decay
BELLE
KEK-B
experimental results
D/s+ --> K+ eta

References(36)

Figures(13)

[1]

Direct CP violation in two-body hadronic charmed meson decays

Hai-Yang Cheng
(
- Taiwan, Inst. Phys.
)
,
Cheng-Wei Chiang
(
- Taiwan, Natl. Central U. and
- Taiwan, Inst. Phys. and
- NCTS, Hsinchu
)

- Phys.Rev.D 85 (2012) 034036,
- Phys.Rev.D 85 (2012) 079903 (erratum)
•
e-Print:
- 1201.0785
•
DOI:
- 10.1103/PhysRevD.85.034036

[1]

Direct CP violation in two-body hadronic charmed meson decays

Hai-Yang Cheng
(
- Taiwan, Inst. Phys.
)
,
Cheng-Wei Chiang
(
- Taiwan, Natl. Central U. and
- Taiwan, Inst. Phys. and
- NCTS, Hsinchu
)

- Phys.Rev.D 85 (2012) 034036,
- Phys.Rev.D 85 (2012) 079903 (erratum)
•
e-Print:
- 1201.0785
•
DOI:
- 10.1103/PhysRevD.85.034036

[2]

Branching ratios and direct CP asymmetries in $D\to PP$ decays

Hsiang-nan Li
(
)
,
Cai-Dian Lu
(
- Beijing, Inst. High Energy Phys. and
- TPCSF, Beijing
)
,
Fu-Sheng Yu
(
- Beijing, Inst. High Energy Phys. and
- TPCSF, Beijing and
- Orsay, LAL
)

- Phys.Rev.D 86 (2012) 036012
•
e-Print:
- 1203.3120
•
DOI:
- 10.1103/PhysRevD.86.036012

[3]

New physics and CP violation in singly Cabibbo suppressed D decays

Yuval Grossman
(
- Technion
)
,
Alexander L. Kagan
(
- Cincinnati U.
)
,
Yosef Nir
(
- Weizmann Inst.
)

- Phys.Rev.D 75 (2007) 036008
•
e-Print:
- hep-ph/0609178
•
DOI:
- 10.1103/PhysRevD.75.036008

[4]

Testing for new physics in singly Cabibbo suppressed D decays

Yuval Grossman
(
- Cornell U., CIHEP and
- Cornell U., LEPP
)
,
Alexander L. Kagan
(
- Cincinnati U.
)
,
Jure Zupan
(
- Cincinnati U.
)

- Phys.Rev.D 85 (2012) 114036
•
e-Print:
- 1204.3557
•
DOI:
- 10.1103/PhysRevD.85.114036

[5]

SU(3) symmetry breaking and CP violation in D -> PP decays

Hai-Yang Cheng
(
- Taiwan, Inst. Phys.
)
,
Cheng-Wei Chiang
(
- Taiwan, Natl. Central U. and
- Taiwan, Inst. Phys. and
- NCTS, Hsinchu
)

- Phys.Rev.D 86 (2012) 014014
•
e-Print:
- 1205.0580
•
DOI:
- 10.1103/PhysRevD.86.014014

[6]

Mixing and CP Violation in the Charm System

Alexander Lenz
(
- Siegen U.
)
,
Guy Wilkinson
(
- Oxford U.
)

- Ann.Rev.Nucl.Part.Sci. 71 (2021) 59-85
•
e-Print:
- 2011.04443
•
DOI:
- 10.1146/annurev-nucl-102419-124613

[7]

Observation of CP Violation in Charm Decays

LHCb

Collaboration

•

Roel Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Phys.Rev.Lett. 122 (2019) 21, 211803
•
e-Print:
- 1903.08726
•
DOI:
- 10.1103/PhysRevLett.122.211803

[8]

Implications of the LHCb discovery of CP violation in charm decays

Avital Dery
(
- Cornell U., LEPP
)
,
Yosef Nir
(
- Weizmann Inst.
)

- JHEP 12 (2019) 104
•
e-Print:
- 1909.11242
•
DOI:
- 10.1007/JHEP12(2019)104

[9]

Revisiting CP violation in $D\to P\!P$ and $V\!P$ decays

- Phys.Rev.D 100 (2019) 9, 093002
•
e-Print:
- 1909.03063
•
DOI:
- 10.1103/PhysRevD.100.093002

[10]

$SU(3)_F$ breaking through final state interactions and $CP$ asymmetries in $D \to PP$ decays

Franco Buccella
(
- INFN, Naples
)
,
Ayan Paul
(
- DESY and
- Humboldt U., Berlin
)
,
Pietro Santorelli
(
- INFN, Naples and
- Naples U.
)

- Phys.Rev.D 99 (2019) 11, 113001
•
e-Print:
- 1902.05564
•
DOI:
- 10.1103/PhysRevD.99.113001

[11]

Charge-conjugate modes are implicitly included throughout this paper unless stated otherwise

[12]

Measurements of D Meson Decays to Two Pseudoscalar Mesons

CLEO

Collaboration

•

H. Mendez
(
- Puerto Rico U., Mayaguez
)

et al.

- Phys.Rev.D 81 (2010) 052013
•
e-Print:
- 0906.3198
•
DOI:
- 10.1103/PhysRevD.81.052013

[13]

Precise measurements of branching fractions for ${\mathrm{D}}_{\mathrm{s}}^{+}$ meson decays to two pseudoscalar mesons

BESIII

Collaboration

•

Medina Ablikim
(
- Beijing, Inst. High Energy Phys.
)

et al.

- JHEP 08 (2020) 146
•
e-Print:
- 2005.05072
•
DOI:
- 10.1007/JHEP08(2020)146

[14]

Sum Rules of Charm CP Asymmetries beyond the SU(3) $_F$ Limit

Sarah Müller
(
- KIT, Karlsruhe, EKP and
- KIT, Karlsruhe, TTP
)
,
Ulrich Nierste
(
- KIT, Karlsruhe, TTP
)
,
Stefan Schacht
(
- KIT, Karlsruhe, TTP
)

- Phys.Rev.Lett. 115 (2015) 25, 251802
•
e-Print:
- 1506.04121
•
DOI:
- 10.1103/PhysRevLett.115.251802

[15]

CP violation, Vol. 9 (Cambridge University Press,)

I.I. Bigi
,
A.I. Sanda

[16]

The Belle Detector

Belle

Collaboration

•

A. Abashian

et al.

- Nucl.Instrum.Meth.A 479 (2002) 117-232
•
DOI:
- 10.1016/S0168-9002(01)02013-7

[16]

Physics Achievements from the Belle Experiment

Belle

Collaboration

•

Jolanta Brodzicka
(
- Cracow, INP
)

et al.

- PTEP 2012 (2012) 04D001
•
e-Print:
- 1212.5342
•
DOI:
- 10.1093/ptep/pts072

[17]

Overview of the KEKB accelerators

S. Kurokawa
(
- KEK, Tsukuba
)
,
Eiji Kikutani
(
- KEK, Tsukuba
)

- Nucl.Instrum.Meth.A 499 (2003) 1-7
•
DOI:
- 10.1016/S0168-9002(02)01771-0

[17]

Achievements of KEKB

et al.

- PTEP 2013 (2013) 03A001
•
DOI:
- 10.1093/ptep/pts102

[18]

The EvtGen particle decay simulation package

D.J. Lange
(
- LLNL, Livermore
)

- Nucl.Instrum.Meth.A 462 (2001) 152-155
•
DOI:
- 10.1016/S0168-9002(01)00089-4

[19]

High-energy physics event generation with PYTHIA 6.1

et al.

- Comput.Phys.Commun. 135 (2001) 238-259
•
e-Print:
- hep-ph/0010017
•
DOI:
- 10.1016/S0010-4655(00)00236-8

[20]

CERN Report No. CERN-DD-EE-84-1

R. Brun

[21]

PHOTOS: A Universal Monte Carlo for QED radiative corrections. Version 2.0

Elisabetta Barberio
(
- CERN and
- Siegen U.
)
,
Zbigniew Was
(
- CERN and
- Cracow, INP
)

- Comput.Phys.Commun. 79 (1994) 291-308
•
DOI:
- 10.1016/0010-4655(94)90074-4

[22]

Search for $CP$ violation in the $D^{+}\to\pi^{+}\pi^{0}$ decay at Belle

Belle

Collaboration

•

V. Babu
(
- Yonsei U. and
- Tata Inst.
)

et al.

- Phys.Rev.D 97 (2018) 1, 011101
•
e-Print:
- 1712.00619
•
DOI:
- 10.1103/PhysRevD.97.011101

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Measurement of branching fractions and CPCPCP asymmetries for Ds+→K+(η,π0)D_s^{+} \rightarrow K^+ (\eta, \pi^0) Ds+​→K+(η,π0) and Ds+→π+(η,π0)D_s^{+} \rightarrow \pi^+ (\eta, \pi^0)Ds+​→π+(η,π0) decays at Belle

Citations per year

Measurement of branching fractions and $CP$ asymmetries for $D_s^{+} \rightarrow K^+ (\eta, \pi^0)$ and $D_s^{+} \rightarrow \pi^+ (\eta, \pi^0)$ decays at Belle