Evidence for an Anomalous Like-Sign Dimuon Charge Asymmetry - INSPIRE

DataBETA

Evidence for an Anomalous Like-Sign Dimuon Charge Asymmetry

D0

Collaboration

Jul, 2010

7 pages

Published in:

Phys.Rev.Lett. 105 (2010) 081801

e-Print:

1007.0395 [hep-ex]

DOI:

10.1103/PhysRevLett.105.081801

PDG: Re(

\epsilon _{{\mathit {\mathit b}}}

\vert \epsilon _{{\mathit {\mathit b}}}

\vert {}^{2}

Report number:

FERMILAB-PUB-10-217-E

Experiments:

FNAL-E-0823

View in:

reference search187 citations

Citations per year

Abstract: (arXiv)

We measure the charge asymmetry

A\equiv(N^{++} - N^{--})/(N^{++} + N^{--})

of like-sign dimuon events in 6.1~fb

^{-1}

of

p\bar{p}

collisions recorded with the D0 detector at a center-of-mass energy

\sqrt{s}=1.96

~TeV at the Fermilab Tevatron collider. From

A

we extract the like-sign dimuon charge asymmetry in semileptonic

b

-hadron decays:

A^b_{sl}=-0.00957\pm0.00251\thinspace({\rm stat})\pm0.00146\thinspace({\rm sys})

. It differs by 3.2~standard deviations from the standard model prediction

A^b_{sl}({\rm SM})=(-2.3^{+0.5}_{-0.6})\times10^{-4}

, and provides first evidence of anomalous

CP

violation in the mixing of neutral

B

mesons.

Note:

7 pages, 3 figures, submitted to Phys. Rev. Lett., please refer this paper together with arXiv:1005.2757 [hep-ex] (2010) (submitted to Phys. Rev. D)

13.20.He
11.30.Er
14.40.Nd
charge: asymmetry
Batavia TEVATRON Coll
DZERO
CP: violation
B0 anti-B0: mixing
dimuon: asymmetry
anti-p p: interaction

References(23)

Figures(3)

CP Violation in the Renormalizable Theory of Weak Interaction

Makoto Kobayashi
(
- Kyoto U.
)
,
Toshihide Maskawa
(
- Kyoto U.
)

- Prog.Theor.Phys. 49 (1973) 652-657,
- Also in *Lichtenberg, D. B. (Ed.), Rosen, S. P. (Ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 218-223.
•
DOI:
- 10.1143/PTP.49.652

Theoretical update of $B_s - \bar{B}_s$ mixing

Alexander Lenz
(
- Regensburg U.
)
,
Ulrich Nierste
(
- Karlsruhe U., TTP
)

- JHEP 06 (2007) 072
•
e-Print:
- hep-ph/0612167
•
DOI:
- 10.1088/1126-6708/2007/06/072

Review of Particle Physics

et al.

- Phys.Lett.B 667 (2008) 1-1340
•
DOI:
- 10.1016/j.physletb.2008.07.018

Violation of CP Invariance, C asymmetry, and baryon asymmetry of the universe

A.D. Sakharov
(
- Lebedev Inst.
)

- Pisma Zh.Eksp.Teor.Fiz. 5 (1967) 32-35,
- JETP Lett. 5 (1967) 24-27,
- Sov.Phys.Usp. 34 (1991) 5, 392-393,
- Usp.Fiz.Nauk 161 (1991) 5, 61-64
•
DOI:
- 10.1070/PU1991v034n05ABEH002497

Standard model CP violation and baryon asymmetry

- Mod.Phys.Lett.A 9 (1994) 795-810
•
e-Print:
- hep-ph/9312215
•
DOI:
- 10.1142/S0217732394000629

Standard model CP violation and baryon asymmetry. Part 2: Finite temperature

- Nucl.Phys.B 430 (1994) 382-426
•
e-Print:
- hep-ph/9406289
•
DOI:
- 10.1016/0550-3213(94)00410-2

Electroweak baryogenesis and standard model CP violation

Patrick Huet
(
- SLAC
)
,
Eric Sather
(
- SLAC
)

- Phys.Rev.D 51 (1995) 379-394
•
e-Print:
- hep-ph/9404302
•
DOI:
- 10.1103/PhysRevD.51.379

Evidence for an Anomalous Like-Sign Dimuon Charge Asymmetry

D0

Collaboration

•

Victor Mukhamedovich Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 82 (2010) 032001
•
e-Print:
- 1005.2757
•
DOI:
- 10.1103/PhysRevD.82.032001

The Upgraded D0 Detector

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Nucl.Instrum.Meth.A 565 (2006) 463-537
•
e-Print:
- physics/0507191
•
DOI:
- 10.1016/j.nima.2006.05.248

CP violating lepton asymmetries from $B$ decays and their implication for supersymmetric flavor models

Lisa Randall
(
- MIT, LNS
)
,
Shu-fang Su
(
- MIT, LNS
)

- Nucl.Phys.B 540 (1999) 37-57
•
e-Print:
- hep-ph/9807377
•
DOI:
- 10.1016/S0550-3213(98)00766-4

B physics beyond the standard model

JoAnne L. Hewett
(
- SLAC
)

- AIP Conf.Proc. 424 (1998) 1, 328-338,
•
e-Print:
- hep-ph/9803370
•
DOI:
- 10.1063/1.55126

Source of CP Violation for the Baryon Asymmetry of the Universe

George W.S. Hou
(
- Taiwan, Natl. Taiwan U. and
- NCTS, Taipei
)

e-Print:
- 0810.3396

The Fourth family: A Natural explanation for the observed pattern of anomalies in $B^-$ CP asymmetries

Amarjit Soni
(
- Brookhaven
)
,
Ashutosh Kumar Alok
(
- Tata Inst.
)
,
Anjan Giri
(
- Punjabi U.
)
,
Rukmani Mohanta
(
- Hyderabad U.
)
,
Soumitra Nandi
(
- Harish-Chandra Res. Inst.
)

- Phys.Lett.B 683 (2010) 302-305
•
e-Print:
- 0807.1971
•
DOI:
- 10.1016/j.physletb.2009.12.048

SM with four generations: Selected implications for rare B and K decays

Amarjit Soni
(
- Brookhaven
)
,
Ashutosh Kumar Alok
(
- Montreal U.
)
,
Anjan Giri
(
- Indian Inst. Tech., Hyderabad
)
,
Rukmani Mohanta
(
- Hyderabad U.
)
,
Soumitra Nandi
(
- Turin U. and
- INFN, Turin
)

- Phys.Rev.D 82 (2010) 033009
•
e-Print:
- 1002.0595
•
DOI:
- 10.1103/PhysRevD.82.033009

Particle-Antiparticle Mixing, epsilon(K), Delta Gamma(q), A**q(SL), A(CP) (B(d) ---> psi K(S)), A(CP) (B(s) ---> psi phi) and B ---> X(s,d gamma) in the Littlest Higgs Model with T-Parity

Monika Blanke
(
- Munich, Tech. U.
)
,
Andrzej J. Buras
(
- Munich, Tech. U.
)
,
Anton Poschenrieder
(
- Munich, Tech. U.
)
,
Cecilia Tarantino
(
- Munich, Tech. U.
)
,
Selma Uhlig
(
- Munich, Tech. U.
)

et al.

- JHEP 12 (2006) 003
•
e-Print:
- hep-ph/0605214
•
DOI:
- 10.1088/1126-6708/2006/12/003

Anatomy and Phenomenology of FCNC and CPV Effects in SUSY Theories

Wolfgang Altmannshofer
(
- Munich, Tech. U.
)
,
Andrzej J. Buras
(
- Munich, Tech. U. and
- TUM-IAS, Munich
)
,
Stefania Gori
(
- Munich, Tech. U. and
- Munich, Max Planck Inst.
)
,
Paride Paradisi
(
- Munich, Tech. U.
)
,
David M. Straub
(
- Munich, Tech. U.
)

- Nucl.Phys.B 830 (2010) 17-94
•
e-Print:
- 0909.1333
•
DOI:
- 10.1016/j.nuclphysb.2009.12.019

Constraining the phase of $B_s - \bar{B}_s$ mixing

- Phys.Rev.Lett. 97 (2006) 151801
•
e-Print:
- hep-ph/0605028
•
DOI:
- 10.1103/PhysRevLett.97.151801

Measurement of the CP-violation parameter of B0 mixing and decay with p anti-p ---> mu mu X data

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 74 (2006) 092001
•
e-Print:
- hep-ex/0609014
•
DOI:
- 10.1103/PhysRevD.74.092001

Search for T, CP and CPT violation in B0 anti-B0 mMixing with inclusive dilepton events

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 96 (2006) 251802
•
e-Print:
- hep-ex/0603053
•
DOI:
- 10.1103/PhysRevLett.96.251802

A Measurement of CP-violation parameters in B0 anti-B0 mixing using partially reconstructed D*- l+ nu(l) events at BaBar

BaBar

Collaboration

•

Bernard Aubert
(
- Barcelona U., ECM
)

et al.

e-Print:
- hep-ex/0607091

Charge asymmetry of same-sign dileptons in $B^0$ - $\bar{B}^0$ mixing

Belle

Collaboration

•

E. Nakano
(
- Osaka City U.
)

et al.

- Phys.Rev.D 73 (2006) 112002
•
e-Print:
- hep-ex/0505017
•
DOI:
- 10.1103/PhysRevD.73.112002

Averages of $b-$ hadron and $c-$ hadron Properties at the End of 2007

HFLAV

Collaboration

•

E. Barberio

et al.

e-Print:
- 0808.1297

Search for CP violation in $B_s^0 \to \mu^+ D_s^- X$ decays in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 82 (2010) 012003,
- Phys.Rev.D 83 (2011) 119901 (erratum)
•
e-Print:
- 0904.3907
•
DOI:
- 10.1103/PhysRevD.82.012003