Search for the decay <math display="inline"><msup><mi>B</mi><mn>0</mn></msup><mo stretchy="false">→</mo><mi>γ</mi><mi>γ</mi></math> using Belle and Belle II data

Adachi, I.; Aggarwal, L.; Aihara, H.; Akopov, N.; Aloisio, A.; Al Said, S.; Althubiti, N.; Anh Ky, N.; Asner, D.M.; Atmacan, H.

doi:10.1103/PhysRevD.110.L031106

Search for the decay $B^{0} \to γ γ$ using Belle and Belle II data

Belle and
Belle-II

Collaborations

May 30, 2024

8 pages

Published in:

Phys.Rev.D 110 (2024) 3, L031106

Published: Aug 1, 2024

e-Print:

2405.19734 [hep-ex]

DOI:

10.1103/PhysRevD.110.L031106 (publication)

Report number:

Belle II Preprint: 2024-017,
KEK Preprint: 2024-13

Experiments:

View in:

ADS Abstract Service

pdf

reference search4 citations

Citations per year

Abstract: (APS)

We report the result of a search for the rare decay

B^{0} \to γ γ

using a combined dataset of

753 \times 10^{6} B \bar{B}

pairs collected by the Belle experiment and

387 \times 10^{6} B \bar{B}

pairs collected by the Belle II experiment from decays of the

ϒ (4 S)

resonance produced in

e^{+} e^{-}

collisions. A simultaneous fit to the Belle and Belle II data sets yields

{11.0}_{- 5.5}^{+ 6.5}

signal events, corresponding to a

2.5 σ

significance. We determine the branching fraction

B (B^{0} \to γ γ) = ({3.7}_{- 1.8}^{+ 2.2} (stat) \pm 0.5 (syst)) \times 10^{- 8}

and set a 90% credibility level upper limit of

B (B^{0} \to γ γ) < 6.4 \times 10^{- 8}

.

Note:

Published in PRD(L)

electron positron: annihilation
electron positron: colliding beams
B: pair production
BELLE
KEK-B
B0: radiative decay
B0: rare decay
photon: pair production
B0: branching ratio
branching ratio: upper limit

References(34)

Figures(7)

[1]

Precision calculations of the double radiative bottom-meson decays in soft-collinear effective theory

- JHEP 12 (2020) 169
•
e-Print:
- 2009.02723
•
DOI:
- 10.1007/JHEP12(2020)169

[2]

Deciphering the Long-Distance Penguin Contribution to ${\bar{B}}_{d, s} \to γ γ$ Decays

Qin Qin
(
- Hua-Zhong U. Sci. Tech.
)
,
Yue-Long Shen
(
- Ocean U.
)
,
Chao Wang
(
- Huaiyin Inst. Technol., Huaian
)
,
Yu-Ming Wang
(
- Nankai U.
)

- Phys.Rev.Lett. 131 (2023) 9, 091902
•
e-Print:
- 2207.02691
•
DOI:
- 10.1103/PhysRevLett.131.091902

[3]

Double-photon decays of B/s and B/d mesons in the MSSM

G.G. Devidze
(
- Tbilisi State U.
)
,
G.R. Jibuti
(
- Tbilisi State U.
)

- Phys.Lett.B 429 (1998) 48-50
•
DOI:
- 10.1016/S0370-2693(98)00447-X

[4]

B(s,d) ---> gamma gamma decay in the model with one universal extra dimension

G. Devidze
(
- Tbilisi State U.
)
,
A. Liparteliani
(
- Tbilisi State U.
)
,
Ulf-G. Meissner
(
- Bonn U., HISKP and
- Julich, Forschungszentrum
)

- Phys.Lett.B 634 (2006) 59-62
•
e-Print:
- hep-ph/0510022
•
DOI:
- 10.1016/j.physletb.2006.01.034

[5]

Bounding the $B_{s} \rightarrow \gamma\gamma$ decay from Higgs mediated FCNC transitions

J.I. Aranda
(
- IFM-UMSNH, Michoacan
)
,
J. Montano
(
- Guanajuato U.
)
,
F. Ramirez-Zavaleta
(
- IFM-UMSNH, Michoacan
)
,
J.J. Toscano
(
- Puebla U., Mexico
)
,
E.S. Tututi
(
- IFM-UMSNH, Michoacan
)

- Phys.Rev.D 82 (2010) 054002
•
e-Print:
- 1005.5452
•
DOI:
- 10.1103/PhysRevD.82.054002

[6]

Search for the Decay $B^{0} \to \gamma \gamma$

BaBar

Collaboration

•

P. del Amo Sanchez
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 83 (2011) 032006
•
e-Print:
- 1010.2229
•
DOI:
- 10.1103/PhysRevD.83.032006

[7]

Search for the decay B0 ---> gamma gamma

Belle

Collaboration

•

S. Villa
(
- LPHE, Lausanne
)

et al.

- Phys.Rev.D 73 (2006) 051107
•
e-Print:
- hep-ex/0507036
•
DOI:
- 10.1103/PhysRevD.73.051107

[8]

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

[8]

Achievements of KEKB

et al.

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

[9]

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

[10]

Belle II Technical Design Report

Belle-II

Collaboration

•

T. Abe

et al.

e-Print:
- 1011.0352

[11]

SuperKEKB Collider

SuperKEKB

Collaboration

•

Kazunori Akai
(
- KEK, Tsukuba and
- Sokendai, Kanagawa
)

et al.

- Nucl.Instrum.Meth.A 907 (2018) 188-199
•
e-Print:
- 1809.01958
•
DOI:
- 10.1016/j.nima.2018.08.017

[12]

Review of Particle Physics

R.L. Workman
(
- George Washington U.
)
,
V.D. Burkert
(
- Jefferson Lab
)
,
V. Crede
(
- Florida State U.
)
,
E. Klempt
(
- Bonn U., HISKP
)
,
U. Thoma
(
- Bonn U., HISKP
)

et al.

- PTEP 2022 (2022) 083C01
•
DOI:
- 10.1093/ptep/ptac097

[13]

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

[14]

An introduction to PYTHIA 8.2

et al.

- Comput.Phys.Commun. 191 (2015) 159-177
•
e-Print:
- 1410.3012
•
DOI:
- 10.1016/j.cpc.2015.01.024

[15]

geant 3.21, Report No. , , https://inspirehep.net/literature/252007

R. Brun

[16]

GEANT4 - A Simulation Toolkit

GEANT4

Collaboration

•

S. Agostinelli
(
- Genoa U.
)

et al.

- Nucl.Instrum.Meth.A 506 (2003) 250-303
•
DOI:
- 10.1016/S0168-9002(03)01368-8

[17]

PYTHIA 6.4 Physics and Manual

Torbjorn Sjostrand
(
- Lund U., Dept. Theor. Phys.
)
,
Stephen Mrenna
(
- Fermilab
)
,
Peter Z. Skands
(
- Fermilab
)

- JHEP 05 (2006) 026
•
e-Print:
- hep-ph/0603175
•
DOI:
- 10.1088/1126-6708/2006/05/026

[18]

The Precision Monte Carlo event generator K K for two fermion final states in e+ e- collisions

S. Jadach
(
- DESY and
- Cracow, INP and
- CERN
)
,
B.F.L. Ward
(
- Tennessee U. and
- CERN and
- SLAC
)
,
Z. Was
(
- Cracow, INP and
- CERN
)

- Comput.Phys.Commun. 130 (2000) 260-325
•
e-Print:
- hep-ph/9912214
•
DOI:
- 10.1016/S0010-4655(00)00048-5

[19]

The tau decay library TAUOLA: Version 2.4

S. Jadach
(
- CERN and
- Cracow, INP
)
,
Z. Was
(
- CERN and
- Cracow, INP
)
,
R. Decker
(
- Karlsruhe U.
)
,
Johann H. Kuhn
(
- Karlsruhe U.
)

- Comput.Phys.Commun. 76 (1993) 361-380
•
DOI:
- 10.1016/0010-4655(93)90061-G

[20]

B2BII: Data Conversion from Belle to Belle II

et al.

- Comput.Softw.Big Sci. 2 (2018) 1, 9
•
e-Print:
- 1810.00019
•
DOI:
- 10.1007/s41781-018-0016-x

[21]

The Belle II Core Software

- Comput.Softw.Big Sci. 3 (2019) 1, 1,
- Comput. Softw. Big Sci. 3 (2019) no.1
•
e-Print:
- 1809.04299
•
DOI:
- 10.1007/s41781-018-0017-9

[22]

Belle II Analysis Software Framework (BASF2),

T. Kuhr

•
DOI:
- 10.5281/zenodo.5574115

[23]

FastBDT: A Speed-Optimized Multivariate Classification Algorithm for the Belle II Experiment

Thomas Keck
(
- KIT, Karlsruhe, EKP
)

- Comput.Softw.Big Sci. 1 (2017) 1, 2
•
DOI:
- 10.1007/s41781-017-0002-8

[24]

A. Khotanzad
,
Y.H. Hong

- IEEE Trans.Pattern Anal.Machine Intell. 12 (1990) 489
•
DOI:
- 10.1109/34.55109

1-25 of 34
1
2
25 / page

Search for the decay B0→γγ using Belle and Belle II data

Citations per year

Search for the decay $B^{0} \to γ γ$ using Belle and Belle II data