Search for the decay modes $D^0 \to e^+e^-$, $D^0 \to \mu^+ \mu^-$, and $D^0 \to e \mu$ - INSPIRE

DataBETA

Search for the decay modes $D^0 \to e^+e^-$ , $D^0 \to \mu^+ \mu^-$ , and $D^0 \to e \mu$

BaBar

Collaboration

Jun, 2012

12 pages

Published in:

Phys.Rev.D 86 (2012) 032001

e-Print:

1206.5419 [hep-ex]

DOI:

10.1103/PhysRevD.86.032001

PDG:

{{\mathit D}^{0}}

\rightarrow

{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}

Report number:

BABAR-PUB-12-009,
SLAC-PUB-15093

Experiments:

SLAC-PEP2-BABAR

View in:

reference search9 citations

Citations per year

Abstract: (arXiv)

We present searches for the rare decay modes D0 to e+e-, D0 to mu+mu- and D0 to e mu in continuum e+e- to cbar c events recorded by the BABAR detector in a data sample that corresponds to an integrated luminosity of 468 f^-1. These decays are highly GIM suppressed but may be enhanced in several extensions of the Standard Model. Our observed event yields are consistent with the expected backgrounds. An excess is seen in the D0 to mu+mu- channel, although the observed yield is consistent with an upward background fluctuation at the 5% level. Using the Feldman-Cousins method, we set the following 90% confidence level intervals on the branching fractions: B(D0 to e+e-)<1.7 x 10^-7, B(D0 to mu+mu-) within [0.6, 8.1] x 10^-7, and B(D0 to e mu)<3.3 x 10^-7.

Note:

12 pages, 4 figures, submitted to PRD

11.30.Hv
12.60.-i
13.20.Fc
12.15.Mm
D0: leptonic decay
Glashow-Iliopoulos-Maiani model
D0: branching ratio: upper limit
D0: rare decay
lepton: pair production
lepton: flavor: violation

References(17)

Figures(16)

[1]

Rare charm decays in the standard model and beyond

Gustavo Burdman
(
- LBL, Berkeley
)
,
Eugene Golowich
(
- Massachusetts U., Amherst
)
,
JoAnne L. Hewett
(
- SLAC
)
,
Sandip Pakvasa
(
- Hawaii U.
)

- Phys.Rev.D 66 (2002) 014009
•
e-Print:
- hep-ph/0112235
•
DOI:
- 10.1103/PhysRevD.66.014009

[2]

Relating D0-anti-D0 Mixing and D0 ---> l+ l- with New Physics

Eugene Golowich
(
- Massachusetts U., Amherst
)
,
JoAnne Hewett
(
- SLAC
)
,
Sandip Pakvasa
(
- Hawaii U.
)
,
Alexey A. Petrov
(
- Wayne State U. and
- Michigan U., MCTP
)

- Phys.Rev.D 79 (2009) 114030
•
e-Print:
- 0903.2830
•
DOI:
- 10.1103/PhysRevD.79.114030

[3]

PEP-II: An Asymmetric B Factory. Conceptual Design Report. June 1993

DOI:
- 10.2172/10112145

[4]

The BaBar detector

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Nucl.Instrum.Meth.A 479 (2002) 1-116
•
e-Print:
- hep-ex/0105044
•
DOI:
- 10.1016/S0168-9002(01)02012-5

[5]

The BaBar muon system upgrade.

W. Menges
(
- SLAC
)

[7]

T.G. Dietterich
,
G. Bakiri

- J.Artif.Intell.Res. 2 (1995) 263

[8]

Bagging Predictors

Leo Breiman
(
- UC, Berkeley
)

- Machine Learning 24 (1996) 123-140
•
DOI:
- 10.1007/BF00058655

[9]

Classification and Regression Trees

L. Breiman
,
J. Friedman
,
C. Stone
,
R.A. Olshen

[10]

The use of multiple measurements in taxonomic problems

Ronald Aylmer Fisher

- Annals Eugen. 7 (1936) 179-188
•
DOI:
- 10.1111/j.1469-1809.1936.tb02137.x

[11]

Observables for the Analysis of Event Shapes in e+ e- Annihilation and Other Processes

Geoffrey C. Fox
(
- Caltech
)
,
Stephen Wolfram
(
- Caltech
)

- Phys.Rev.Lett. 41 (1978) 1581
•
DOI:
- 10.1103/PhysRevLett.41.1581

[12]

A Study of the Reactions $\psi^\prime \to \gamma \gamma \psi$

M. Oreglia
(
- SLAC
)

- SLAC Stanford - SLAC-236 (80,REC.APR. 81) 226p

[12]

Charmonium Spectroscopy From Radiative Decays of the $J/\psi$ and $\psi^\prime$

John Erthal Gaiser
(
- SLAC
)

- SLAC Stanford - SLAC-255 (82,REC.JUN.83) 194p

[13]

Review of particle physics

K. Nakamura
(
- Tokyo U., IPMU and
- KEK, Tsukuba
)
,
K. Hagiwara
(
- KEK, Tsukuba
)
,
K. Hikasa
(
- Tohoku U.
)
,
H. Murayama
(
- LBL, Berkeley and
- UC, Berkeley and
- Tokyo U., IPMU
)
,
M. Tanabashi
(
- Nagoya U.
)

et al.

- J.Phys.G 37 (2010) 075021
•
DOI:
- 10.1088/0954-3899/37/7A/075021

[14]

A Unified approach to the classical statistical analysis of small signals

Gary J. Feldman
(
- Harvard U.
)
,
Robert D. Cousins
(
- UCLA
)

- Phys.Rev.D 57 (1998) 3873-3889
•
e-Print:
- physics/9711021
•
DOI:
- 10.1103/PhysRevD.57.3873

[15]

Search for flavor-changing neutral current and lepton flavor violating decays of $D^0 \to \ell^+ \ell^-$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 93 (2004) 191801
•
e-Print:
- hep-ex/0408023
•
DOI:
- 10.1103/PhysRevLett.93.191801

[16]

Search for leptonic decays of $D^0$ mesons

Belle

Collaboration

•

M. Petric
(
- Stefan Inst., Ljubljana
)

et al.

- Phys.Rev.D 81 (2010) 091102
•
e-Print:
- 1003.2345
•
DOI:
- 10.1103/PhysRevD.81.091102

[17]

Search for the $D^0 \to \mu^+ \mu^-$ decay with 0.9 $\rm{fb}^{−1}$ at LHCb

LHCb

Collaboration