Measurement of properties of B$^0_\mathrm{s}\to\mu^+\mu^-$ decays and search for B$^0\to\mu^+\mu^-$ with the CMS experiment - INSPIRE

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Measurement of properties of B $^0_\mathrm{s}\to\mu^+\mu^-$ decays and search for B $^0\to\mu^+\mu^-$ with the CMS experiment

CMS

Collaboration

Oct 26, 2019

45 pages

Published in:

JHEP 04 (2020) 188

Published: Apr 28, 2020

e-Print:

1910.12127 [hep-ex]

DOI:

10.1007/JHEP04(2020)188

PDG:

{{\mathit B}^{0}}

\rightarrow

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

Report number:

CMS-BPH-16-004,
CERN-EP-2019-215

Experiments:

CERN-LHC-CMS

View in:

reference search164 citations

Citations per year

Abstract: (Springer)

Results are reported for the

{\mathrm{B}}_{\mathrm{s}}^0

→ μ

^{+}

μ

^{−}

branching fraction and effective lifetime and from a search for the decay B

^{0}

→ μ

^{+}

μ

^{−}

. The analysis uses a data sample of proton-proton collisions accumulated by the CMS experiment in 2011, 2012, and 2016, with center-of-mass energies (integrated luminosities) of 7 TeV (5 fb

^{−1}

), 8 TeV (20 fb

^{−1}

), and 13 TeV (36 fb

^{−1}

). The branching fractions are determined by measuring event yields relative to B

^{+}

→ J/ψK

^{+}

decays (with J/ψ → μ

^{+}

μ

^{−}

), which results in the reduction of many of the systematic uncertainties. The decay

{\mathrm{B}}_{\mathrm{s}}^0

→ μ

^{+}

μ

^{−}

is observed with a significance of 5.6 standard deviations. The branching fraction is measured to be \mathrm{\mathcal{B}}\left({\mathrm{B}}_{\mathrm{s}}^0\to {\upmu}^{+}{\upmu}^{-}\right)=\left[2.9\pm 0.7\left(\exp \right)\pm 0.2\left(\mathrm{frag}\right)\right]\times {10}^{-9} , where the first uncertainty combines the experimental statistical and systematic contributions, and the second is due to the uncertainty in the ratio of the

{\mathrm{B}}_{\mathrm{s}}^0

and the B

^{+}

fragmentation functions. No significant excess is observed for the decay B

^{0}

→ μ

^{+}

μ

^{−}

, and an upper limit of ℬ(B

^{0}

→ μ

^{+}

μ

^{−}

) < 3.6 × 10

^{−10}

is obtained at 95% confidence level. The

{\mathrm{B}}_{\mathrm{s}}^0

→ μ+μ− effective lifetime is measured to be {\tau}_{\upmu^{+}{\upmu}^{-}}={1.70}_{-0.44}^{+0.61} ps. These results are consistent with standard model predictions.[graphic not available: see fulltext]

Note:

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/BPH-16-004 (CMS Public Pages)

B physics
Hadron-Hadron scattering (experiments)
p p: scattering
p p: colliding beams
B0: leptonic decay
B/s0: leptonic decay
B0: rare decay
B/s0: rare decay
muon: pair production
B/s0: branching ratio: measured

References(48)

Figures(22)

[1]

$B_{s,d} \to l^+ l^-$ in the Standard Model with Reduced Theoretical Uncertainty

Christoph Bobeth
(
- Munich, Tech. U.
)
,
Martin Gorbahn
(
- Liverpool U., Dept. Math. and
- Munich, Tech. U.
)
,
Thomas Hermann
(
- KIT, Karlsruhe, TTP
)
,
Mikolaj Misiak
(
- Warsaw U. and
- CERN
)
,
Emmanuel Stamou
(
- Munich, Tech. U. and
- Weizmann Inst.
)

et al.

- Phys.Rev.Lett. 112 (2014) 101801
•
e-Print:
- 1311.0903
•
DOI:
- 10.1103/PhysRevLett.112.101801

[2]

Electroweak Corrections to $B_{s,d} \to \ell^+ \ell^-$

Christoph Bobeth
(
- Munich, Tech. U., Universe and
- Munich, Tech. U.
)
,
Martin Gorbahn
(
- Munich, Tech. U., Universe and
- Liverpool U., Dept. Math.
)
,
Emmanuel Stamou
(
- Munich, Tech. U., Universe and
- Munich, Tech. U. and
- Weizmann Inst.
)

- Phys.Rev.D 89 (2014) 3, 034023
•
e-Print:
- 1311.1348
•
DOI:
- 10.1103/PhysRevD.89.034023

Three-loop QCD corrections to $B_s \to \mu^+ \mu^-$

Thomas Hermann
(
- KIT, Karlsruhe, TTP
)
,
Mikolaj Misiak
(
- Warsaw U. and
- CERN
)
,
Matthias Steinhauser
(
- KIT, Karlsruhe, TTP
)

- JHEP 12 (2013) 097
•
e-Print:
- 1311.1347
•
DOI:
- 10.1007/JHEP12(2013)097

[4]

Enhanced electromagnetic correction to the rare $B$ -meson decay $B_{s,d} \to \mu^+ \mu^-$

Martin Beneke
(
- Munich, Tech. U.
)
,
Christoph Bobeth
(
- Munich, Tech. U. and
- Munich, Tech. U., Universe
)
,
Robert Szafron
(
- Munich, Tech. U.
)

- Phys.Rev.Lett. 120 (2018) 1, 011801
•
e-Print:
- 1708.09152
•
DOI:
- 10.1103/PhysRevLett.120.011801

Power-enhanced leading-logarithmic QED corrections to $B_q \to \mu^+\mu^-$

Martin Beneke
(
- Munich, Tech. U.
)
,
Christoph Bobeth
(
- Munich, Tech. U.
)
,
Robert Szafron
(
- Munich, Tech. U.
)

- JHEP10(2019)232,
- JHEP 10 (2019) 232,
- JHEP 11 (2022) 099 (erratum)
•
e-Print:
- 1908.07011
•
DOI:
- 10.1007/JHEP10(2019)232

[6]

FLAG Review 2019: Flavour Lattice Averaging Group (FLAG)

S. Aoki
(
- Kyoto U., Yukawa Inst., Kyoto
)
,
Y. Aoki
(
- KEK, Tsukuba and
- RIKEN BNL
)
,
D. Bečirević
(
- Orsay, LPT
)
,
T. Blum
(
- Connecticut U. and
- RIKEN BNL
)
,
G. Colangelo
(
- U. Bern, AEC
)

et al.

- Eur.Phys.J.C 80 (2020) 2, 113
•
e-Print:
- 1902.08191
•
DOI:
- 10.1140/epjc/s10052-019-7354-7

[7]

$B$ - and $D$ -meson leptonic decay constants from four-flavor lattice QCD

A. Bazavov
(
- Michigan State U.
)
,
C. Bernard
(
- Washington U., St. Louis
)
,
N. Brown
(
- Washington U., St. Louis
)
,
C. Detar
(
- Utah U.
)
,
A.X. El-Khadra
(
- Illinois U., Urbana and
- Fermilab
)

et al.

- Phys.Rev.D 98 (2018) 7, 074512
•
e-Print:
- 1712.09262
•
DOI:
- 10.1103/PhysRevD.98.074512

[8]

Mass of the b quark and B -meson decay constants from N $_f$ =2+1+1 twisted-mass lattice QCD

ETM

Collaboration

•

A. Bussone
(
- Southern Denmark U., CP3-Origins and
- U. Southern Denmark, Odense, DIAS
)

et al.

- Phys.Rev.D 93 (2016) 11, 114505
•
e-Print:
- 1603.04306
•
DOI:
- 10.1103/PhysRevD.93.114505

[9]

B-Meson Decay Constants from Improved Lattice Nonrelativistic QCD with Physical u, d, s, and c Quarks

HPQCD

Collaboration

•

R.J. Dowdall
(
- Cambridge U., DAMTP and
- Glasgow U.
)

et al.

- Phys.Rev.Lett. 110 (2013) 22, 222003
•
e-Print:
- 1302.2644
•
DOI:
- 10.1103/PhysRevLett.110.222003

[10]

New methods for B meson decay constants and form factors from lattice NRQCD

C. Hughes
(
- Cambridge U., DAMTP and
- Fermilab
)
,
C.T.H. Davies
(
- Glasgow U. and
- SUPA, UK
)
,
C.J. Monahan
(
- Rutgers U., Piscataway and
- Washington U., Seattle
)

- Phys.Rev.D 97 (2018) 5, 054509
•
e-Print:
- 1711.09981
•
DOI:
- 10.1103/PhysRevD.97.054509

[11]

Measurement of the $B^0_s \to \mu^+ \mu^-$ Branching Fraction and Search for $B^0 \to \mu^+ \mu^-$ with the CMS Experiment

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.Lett. 111 (2013) 101804
•
e-Print:
- 1307.5025
•
DOI:
- 10.1103/PhysRevLett.111.101804

[12]

Observation of the rare $B^0_s\to\mu^+\mu^-$ decay from the combined analysis of CMS and LHCb data

CMS and
LHCb

Collaborations

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Nature 522 (2015) 68-72
•
e-Print:
- 1411.4413
•
DOI:
- 10.1038/nature14474

[13]

Measurement of the $B^0_s\to\mu^+\mu^-$ branching fraction and effective lifetime and search for $B^0\to\mu^+\mu^-$ decays

LHCb

Collaboration

•

Roel Aaij
(
- CERN
)

et al.

- Phys.Rev.Lett. 118 (2017) 19, 191801
•
e-Print:
- 1703.05747
•
DOI:
- 10.1103/PhysRevLett.118.191801

[14]

Study of the rare decays of $B^0_s$ and $B^0$ mesons into muon pairs using data collected during 2015 and 2016 with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- JHEP 04 (2019) 098
•
e-Print:
- 1812.03017
•
DOI:
- 10.1007/JHEP04(2019)098

[15]

Averages of $b$ -hadron, $c$ -hadron, and $\tau$ -lepton properties as of summer 2016

HFLAV

Collaboration

•

Y. Amhis
(
- Orsay, LAL
)

et al.

- Eur.Phys.J.C 77 (2017) 12, 895
•
e-Print:
- 1612.07233
•
DOI:
- 10.1140/epjc/s10052-017-5058-4

Review of Particle Physics

M. Tanabashi
(
- Nagoya U. and
- KMI, Nagoya
)
,
K. Hagiwara
(
- KEK, Tsukuba
)
,
K. Hikasa
(
- Tohoku U.
)
,
K. Nakamura
(
- Tokyo U., IPMU and
- KEK, Tsukuba
)
,
Y. Sumino
(
- Tohoku U.
)

et al.

- Phys.Rev.D 98 (2018) 3, 030001
•
DOI:
- 10.1103/PhysRevD.98.030001

[17]

Probing New Physics via the $B^0_s\to \mu^+\mu^-$ Effective Lifetime

Kristof De Bruyn
(
- NIKHEF, Amsterdam
)
,
Robert Fleischer
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)
,
Robert Knegjens
(
- NIKHEF, Amsterdam
)
,
Patrick Koppenburg
(
- NIKHEF, Amsterdam
)
,
Marcel Merk
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)

et al.

- Phys.Rev.Lett. 109 (2012) 041801
•
e-Print:
- 1204.1737
•
DOI:
- 10.1103/PhysRevLett.109.041801

[18]

Branching Ratio Measurements of $B_s$ Decays

Kristof De Bruyn
(
- NIKHEF, Amsterdam
)
,
Robert Fleischer
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)
,
Robert Knegjens
(
- NIKHEF, Amsterdam
)
,
Patrick Koppenburg
(
- NIKHEF, Amsterdam
)
,
Marcel Merk
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)

et al.

- Phys.Rev.D 86 (2012) 014027
•
e-Print:
- 1204.1735
•
DOI:
- 10.1103/PhysRevD.86.014027

[19]

Measurement of the fragmentation fraction ratio $f_{s}/f_{d}$ and its dependence on $B$ meson kinematics

LHCb

Collaboration

•

R Aaij
(
- NIKHEF, Amsterdam
)

et al.

- JHEP 04 (2013) 001
•
e-Print:
- 1301.5286
•
DOI:
- 10.1007/JHEP04(2013)001

[20]

Determination of the ratio of $b$ -quark fragmentation fractions $f_s/f_d$ in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Rev.Lett. 115 (2015) 26, 262001
•
e-Print:
- 1507.08925
•
DOI:
- 10.1103/PhysRevLett.115.262001

[21]

Measurement of $b$ hadron fractions in 13 TeV $pp$ collisions

LHCb

Collaboration

•

Roel Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Phys.Rev.D 100 (2019) 3, 031102
•
e-Print:
- 1902.06794
•
DOI:
- 10.1103/PhysRevD.100.031102

[22]

Measurement of $f_s / f_u$ Variation with Proton-Proton Collision Energy and $B$ -Meson Kinematics

LHCb

Collaboration

•

Roel Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Phys.Rev.Lett. 124 (2020) 12, 122002
•
e-Print:
- 1910.09934
•
DOI:
- 10.1103/PhysRevLett.124.122002

[23]

SPlot: A Statistical tool to unfold data distributions

Muriel Pivk
(
- CERN
)
,
Francois R. Le Diberder
(
- Orsay, LAL
)

- Nucl.Instrum.Meth.A 555 (2005) 356-369
•
e-Print:
- physics/0402083
•
DOI:
- 10.1016/j.nima.2005.08.106

[24]

Form Factors and Strong Couplings of Heavy Baryons from QCD Light-Cone Sum Rules

- JHEP 09 (2011) 106
•
e-Print:
- 1108.2971
•
DOI:
- 10.1007/JHEP09(2011)106

[25]

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

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