Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)

I G (J PC ) = 0− (1 − − )Υ(11020)

Υ(11020) MASSVALUE (MeV)

DOCUMENT ID

TECNCOMMENT

11000 ± 4 OUR AVERAGE+ 4.0 + 1.0
1 MIZUK
11000.0 −19 BELL e + e − → Υ(1S, 2S, 3S) π + π −4.5 − 1.3+ 7.3 + 16.9
2 MIZUK
10999.0 −16 BELL e + e − → hb (1P, 2P) π + π −7.8 − 1.0
• • • We do not use the following data for averages, fits, limits, etc. • • •3 DONG
11001 ± 1
20Ae+ e− → b b0.9
11003.0± 1.1 +− 1.0+ 6.4 + 9.1
10987.5 −2.5 − 2.3

4,5 SANTEL

166,7 SANTEL

16BELLe + e − → hadrons

e + e − → Υ(1S, 2S, 3S) π + π −8 AUBERT
10996 ± 209E BABR e + e − → hadrons
11019 ± 5 ± 7
BESSON85 CLEO e + e − → hadrons
11020 ± 30
LOVELOCK
85 CUSB e + e − → hadrons
1 From a simultaneous fit to the Υ(nS) π + π − , n = 1, 2, 3, cross sections at 28 energy√points within s = 10.6–11.05 GeV, including the initial-state radiation at Υ(10860).
2 From a simultaneous fit to the h (nP) π + π − , n = 1, 2 cross sections at 22 energyb√
points within s = 10.77–11.02 GeV to a pair of interfering Breit-Wigner amplitudes
modified by phase space factors, with eight resonance parameters (a mass and widthfor each of Υ(10860) and Υ(11020), a single relative phase, a single relative amplitude,
and two overall normalization factors, one for each n). The systematic error estimate isdominated by possible interference with a small nonresonant continuum amplitude.
3 From a fit to the dressed cross sections of AUBERT 09E by BaBar and SANTEL 16
by Belle above 10.68 GeV with a coherent sum of a continuum amplitude and three
Breit-Wigner functions with constant widths.
4 From a fit to the total hadronic cross sections measured at 60 energy points within √s= 10.82–11.05 GeV to a pair √of interfering Breit-Wigner amplitudes and two floating
continuum amplitudes with 1/ s dependence, one coherent with the resonances andone incoherent, with six resonance parameters (a mass, width, and an amplitude foreach of Υ(10860) and Υ(11020), one relative phase, and one decoherence coefficient).
5 Not including uncertain and potentially large systematic errors due to assumed continuum√
amplitude 1/ s dependence and related interference contributions.
6 From a simultaneous fit to the Υ(nS) π + π − , n = 1, 2, 3, cross sections at 25energy√
points within s = 10.6–11.05 GeV to a pair of interfering Breit-Wigner amplitudesmodified by phase space factors, with fourteen resonance parameters (a mass, width, andthreeamplitudes for each of Υ(10860) and Υ(11020), a single universal relativephase,and three decoherence coefficients, one for each n). Continuum contributions weremeasured (and therefore fixed) to be zero.
7 Superseded by MIZUK 19.
8 In a model where a flat non-resonant b b-continuum is incoherently added to a second
flat component interfering with two Breit-Wigner resonances. Systematic uncertainties
not estimated.

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Page 1BELL

Created: 5/31/2024 10:14

Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)Υ(11020) WIDTHVALUE (MeV)

DOCUMENT ID

TECNCOMMENT824 +− 6 OUR AVERAGE+ 8.0 + 0.7
1 MIZUK
23.8 −
19 BELL e + e − → Υ(nS) π + π −6.8 − 1.8
27 + 52 MIZUK
27 +16 BELL e + e − → hb (1P, 2P) π + π −− 11 − 12• • • We do not use the following data for averages, fits, limits, etc. • • •3 DONG
35.1± 1.2
20Ae+ e− → b b+ 1.7 + 1.3
39.3 −
1.6 − 2.4

4,5 SANTEL

16BELLe + e − → hadrons

9 + 26,7 SANTEL
61 +16 BELL e + e − → Υ(1S, 2S, 3S) π + π −− 19 − 20
8 AUBERT
37 ± 309E BABR e + e − → hadrons
61 ± 13 ± 22
BESSON85 CLEO e + e − → hadrons
90 ± 20
LOVELOCK
85 CUSB e + e − → hadrons
1 From a simultaneous fit to the Υ(nS) π + π − , n = 1, 2, 3, cross sections at 28 energy√points within s = 10.6–11.05 GeV, including the initial-state radiation at Υ(10860).
2 From a simultaneous fit to the h (nP) π + π − , n = 1, 2 cross sections at 22 energyb√
points within s = 10.77–11.02 GeV to a pair of interfering Breit-Wigner amplitudes
modified by phase space factors, with eight resonance parameters (a mass and width
for each of Υ(10860) and Υ(11020), a single relative phase, a single relative amplitude,
and two overall normalization factors, one for each n). The systematic error estimate isdominated by possible interference with a small nonresonant continuum amplitude.
3 From a fit to the dressed cross sections of AUBERT 09E by BaBar and SANTEL 16
by Belle above 10.68 GeV with a coherent sum of a continuum amplitude and three
Breit-Wigner functions with constant widths.
4 From a fit to the total hadronic cross sections measured at 60 energy points within √s= 10.82–11.05 GeV to a pair √of interfering Breit-Wigner amplitudes and two floating
continuum amplitudes with 1/ s dependence, one coherent with the resonances andone incoherent, with six resonance parameters (a mass, width, and an amplitude foreach of Υ(10860) and Υ(11020), one relative phase, and one decoherence coefficient).
5 Not including uncertain and potentially large systematic errors due to assumed continuum√
amplitude 1/ s dependence and related interference contributions.
6 From a simultaneous fit to the Υ(nS) π + π − , n=1, 2, 3, cross sections at 25energy points√
within s = 10.6–11.05 GeV to a pair of interfering Breit-Wigner amplitudesmodified byphase space factors, with fourteen resonance parameters (a mass, width, and threeamplitudes for each of Υ(10860) and Υ(11020), a single universal relativephase, and threedecoherence coefficients, one for each n). Continuum contributions weremeasured (andtherefore fixed) to be zero.
7 Superseded by MIZUK 19.
8 In a model where a flat non-resonant b b-continuum is incoherently added to a second
flat component interfering with two Breit-Wigner resonances. Systematic uncertainties
not estimated.

https://pdg.lbl.gov

Page 2Created: 5/31/2024 10:14

Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)Υ(11020) DECAY MODESModeFraction (Γi /Γ)Γ1e+ e−Γ2Γ3Γ4Υ(1S) π + π −Υ(2S) π + π −Υ(3S) π + π −+ 1.9 ) × 10−6(5.4 −2.1Γ5χbJ (1P) π + π − π 0Γ6Γ79−3(9 +− 8 ) × 10seenχb1 (1P)π + π − π 0χb2 (1P)π + π − π 0seenΥ(11020) PARTIAL WIDTHSΓ e+ e−Γ1VALUE (keV)

DOCUMENT ID

0.130± 0.030 OUR AVERAGE
0.095± 0.03 ± 0.035
0.156± 0.040

BESSONLOVELOCK

TECN

8585

COMMENT

CLEO e + e − → hadrons
CUSB e + e − → hadronsΓ e + e − × Γ Υ(1S) π + π − /Γtotal
VALUE (eV)

DOCUMENT ID

Γ1 Γ2 /ΓTECNCOMMENT• • • We do not use the following data for averages, fits, limits, etc. • • •1,2 MIZUK
0.46± 0.08
19 BELL e + e − → Υ(nS) π + π −1 From a simultaneous fit to the Υ(nS) π + π − , n = 1, 2, 3, cross sections at 28 energy√
points within s = 10.6–11.05 GeV, including the initial-state radiation at Υ(10860).
2 Reported as the range 0.38–0.54 eV obtained from multiple solutions of an amplitude fit
within a model composed as a sum of Breit-Wigner functions.

Γ e + e − × Γ Υ(2S) π + π − /Γtotal
VALUE (eV)

DOCUMENT ID

Γ1 Γ3 /ΓTECNCOMMENT• • • We do not use the following data for averages, fits, limits, etc. • • •1,2 MIZUK
0.65± 0.52
19 BELL e + e − → Υ(nS) π + π −1 From a simultaneous fit to the Υ(nS) π + π − , n = 1, 2, 3, cross sections at 28 energy√
points within s = 10.6–11.05 GeV, including the initial-state radiation at Υ(10860).
2 Reported as the range 0.13–1.16 eV obtained from multiple solutions of an amplitude fit
within a model composed as a sum of Breit-Wigner functions.

Γ e + e − × Γ Υ(3S) π + π − /Γtotal
VALUE (eV)

DOCUMENT ID

Γ1 Γ4 /ΓTECNCOMMENT• • • We do not use the following data for averages, fits, limits, etc. • • •1,2 MIZUK
0.33± 0.16
19 BELL e + e − → Υ(nS) π + π −1 From a simultaneous fit to the Υ(nS) π + π − , n = 1, 2, 3, cross sections at 28 energy√
points within s = 10.6–11.05 GeV, including the initial-state radiation at Υ(10860).
2 Reported as the range 0.17–0.49 eV obtained from multiple solutions of an amplitude fit
within a model composed as a sum of Breit-Wigner functions.

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Page 3Created: 5/31/2024 10:14

Citation: S. Navas et al. (Particle Data Group), Phys. Rev. D 110, 030001 (2024)Γ χbJ (1P)π + π − π 0 /Γtotal

Γ5 /Γ

VALUE (units 10−3 )DOCUMENT ID+ 7.6
8.7± 4.3 −6.6YIN18TECNCOMMENT

BELL

e + e − → hadrons

(1P) π+ π − π 0 /Γtotal
Γ χb1 (1P)π

Γ6 /Γ

VALUE

DOCUMENT ID

seen

YIN

18TECNCOMMENT

BELL

e + e − → hadronsΓ χb2 (1P)π(1P) π+ π − π 0 /Γtotal

Γ7 /Γ

VALUE

DOCUMENT ID

seen

YIN

18TECNCOMMENT

BELL

e + e − → hadronsΓ χb2 (1P)π(1P) π+ π − π 0 /Γ χb1 (1P)π + π − π 0
VALUE

DOCUMENT ID

0.4± 0.2

YINΓ7 /Γ618

TECN

COMMENT

BELL

e + e − → hadrons

Υ(11020) REFERENCES
DONG
MIZUK
YIN
MIZUK
SANTEL
AUBERT
BESSONLOVELOCK

20A
1918161609E8585

CP C44 083001
JHEP 1910 220
PR D98 091102
PRL 117 142001
PR D93 011101
PRL 102 012001
PRL 54 381
PRL 54 377

https://pdg.lbl.gov

X.-K. Dong et al.
R. Mizuk et al.
J.H. Yin et al.
R. Mizuk et al.
D. Santel et al.
B. Aubert et al.
D. Besson et al.
D.M.J. Lovelock et al.

Page 4(BELLE Collab.)(BELLE Collab.)(BELLE Collab.)(BELLE Collab.)(BABAR Collab.)(CLEO Collab.)(CUSB Collab.)

Created: 5/31/2024 10:14