Recent results for properties of D** and excited Ds mesons

For comments see arXiv:0808.1297, Section 8.2

Recent results for properties of D** mesons

Main Results Reference Comments
Masses
[Mev/c2],
widths
[MeV]
M(D2(2460)0) : 2461.1 ± 1.6
Γ(D2(2460)0) : 43 ± 4
M(D2(2460)±) : 2460.1 ± 2.63.5
Γ(D2(2460)±) : 37 ± 6
M(D1(2420)0) : 2422.3 ± 1.3
Γ(D1(2420)0) : 20.4 ± 1.7
M(D1(2420)±) : 2423.4 ± 3.1
Γ(D1(2420)±) : 25 ± 6
PDG (2008) PDG average
M(D0(2400)0) : 2308 ± 17 ± 15 ± 28
Γ(D0(2400)0) : 276 ± 21 ± 18 ± 60
Γ(D2(2460)0) : 45.6 ± 4.4 ± 6.5 ± 1.6
Γ(D1(2420)0) : 23.7 ± 2.7 ± 0.2 ± 4.0
M(D1(2430)0) : 2427 ± 26 ± 20 ± 15
Γ(D1(2430)0) : 384 ± 10775 ± 24 ± 70
Belle last error due
to Dalitz model
Γ(D2(2460)±) : 49.7 ± 3.8 ± 4.1 ± 4.9 Belle
Γ(D2(2460)0) : 38.7 ± 5.3 ± 2.9
Γ(D2(2460)±) : 34.1 ± 6.5 ± 4.2
M(D0(2400)0/D1(2430)0) : 2407 ± 21 ± 35
Γ(D0(2400)0/D1(2430)0) : 240 ± 55 ± 59
M(D0(2400)±/D1(2430)±) : 2403 ± 14 ± 35
Γ(D0(2400)±/D1(2430)±) : 283 ± 24 ± 34
FOCUS  
D0(2400)0/D1(2430)0 and
D0(2400)±/D1(2430)± may
contribute to signal
Γ(D2(2460)0) : 49.2 ± 2.3 ± 1.2
Γ(D1(2420)0) : 20.0 ± 1.7 ± 1.3
CDF  
Branching
fractions
[10−4]
B→D0(2400)0π,
D0(2400)0→D+π : 6.1 ± 0.6 ± 0.9 ± 1.6
B→D2(2460)0π,
D2(2460)0→D+π : 3.4 ± 0.3 ± 0.6 ± 0.4
B→D1(2420)0π,
D1(2420)0→D* +π : 6.8 ± 0.7 ± 1.3 ± 0.3
B→D2(2460)0π,
D2(2460)0→D* +π : 1.8 ± 0.3 ± 0.3 ± 0.2
B→D1(2430)0π,
D1(2430)0→D* +π : 5.0 ± 0.4 ± 1.0 ± 0.4
Belle  
B0→D2(2460)+π,
D2(2460)+→D0π+ : 2.15 ± 0.17 ± 0.29 ± 0.12
B0→D0(2400)+π,
D0(2400)+→D0π+ : 0.60 ± 0.13 ± 0.15 ± 0.22
Belle last error due
to Dalitz model;
M(D0(2400)±) = M(D0(2400)0),
Γ(D0(2400)±) = Γ(D0(2400)0)
assumed
B→D1(2420)0π,
D1(2420)0→D0π+π : 1.85 ± 0.29 ± 0.35 ± 0.000.43
B0→D1(2420)+π,
D1(2420)+→D+π+π : 0.89 ± 0.15 ± 0.17 ± 0.000.27
Belle last error due to
possible D2(2460)0,
D2(2460)± contr.
Quantum
numbers
(JP)
D0(2400)0 : 0+ Belle 0+ preferred over 1, 2+
with sign. > 10σ
D1(2430)0 : 1+ 1+ preferred over 0, 1, 2+
with sign. > 10σ
D0(2400)± : 0+ Belle 0+ preferred over 1, 2+
with sign. ∼ 5σ

Recent results for properties of excited Ds mesons

Main Results Reference Comments
Masses
[MeV/c2],
widths
[MeV]
M(Ds0(2317)±) : 2317.8 ± 0.6
M(Ds1(2460)±) : 2459.6 ± 0.6
M(Ds1(2536)±) : 2535.12 ± 0.25
M(Ds2(2573)±) : 2572.6 ± 0.9
PDG (2008) PDG average
Γ(Ds0(2317)±) : < 4.6
Γ(Ds1(2460)±) : < 5.5
Belle  
Γ(Ds0(2317)±) : < 3.8
Γ(Ds1(2460)±) : < 3.5
BaBar 95% C.L. U.L.
M(DsJ(2700)± : 2708 ± 9 ± 1110
Γ(DsJ(2700)± : 108 ± 23 ± 3631
Belle  
M(DsJ(2860)± : 2856.6 ± 1.5 ± 5.0
Γ(DsJ(2860)± : 48 ± 7 ± 10
BaBar
M(DsJ(2632)± : 2632.5 ± 1.7
Γ(DsJ(2632)± : < 17
SELEX not seen by other exp's
sys. err. not given
Branching
fractions
[10−4]
B0→DDs0(2317)+, Ds0(2317)+→ Ds+π0 : 8.6 ± 3.32.6 ± 2.6
B0→DDs1(2460)+, Ds1(2460)+→ Ds* +π0 : 22.7 ± 7.36.2 ± 6.8
B0→DDs1(2460)+, Ds1(2460)+→ Ds+γ : 8.2 ± 2.21.9 ± 2.5
Belle further br. frac. for
B0, B± in paper
B0→DDs0(2317)+, Ds0(2317)+→ Ds+π0 : 18 ± 4 ± 3 ± 64
B0→DDs1(2460)+, Ds1(2460)+→ Ds* +π0 : 28 ± 8 ± 5 ± 106
B0→DDs1(2460)+, Ds1(2460)+→ Ds+γ : 8 ± 2 ± 1 ± 32
BaBar further br. frac. for
B0, B± in paper;
last error
from B(D, Ds+)
B(Ds1(2460)±→Ds+γ)
B(Ds1(2460)±→Ds* ±π0)
= 0.55 ± 0.13 ± 0.08
B(Ds1(2460)±→Ds+π+π)
B(Ds1(2460)±→Ds* ±π0)
= 0.14 ± 0.04 ± 0.02
σ(Ds1(2536)±)B(Ds1(2536)±→Ds+π+π)
σ(Ds1(2460)±)B(Ds1(2460)±→Ds+π+π)
= 1.05 ± 0.32 ± 0.06
Belle  
B→Ds0(2317)±K+, Ds0(2317)±→Ds+π0 :
0.53 ± 0.150.13 ± 0.07 ± 0.14
B→Ds1(2460)±K+. Ds1(2460)±→Ds+γ : < 0.094
Belle last error due
to B(Ds+)
σ(Ds0(2317)±)B(Ds0(2317)±→Ds+π0)
σ(Ds+)
= (7.9 ± 1.2 ± 0.4) · 10−2
σ(Ds1(2460)±)B(Ds1(2460)±→Ds* ±π0)
σ(Ds+)
= (3.5 ± 0.9 ± 0.2) · 10−2
CLEO  
B(Ds1(2536)±→D±π+K±)
B(Ds1(2536)±→D* ±K0)
= (3.27 ± 0.18 ± 0.37)%
Belle
B→Ds1(2536)±D+ : 1.71 ± 0.48 ± 0.32
B→Ds1(2536)±D+ : 3.32 ± 0.88 ± 0.66
B+→Ds1(2536)+D0 : 2.16 ± 0.52 ± 0.45
B+→Ds1(2536)+D* 0 : 5.46 ± 1.17 ± 1.04
BaBar Ds1(2536)+→D* 0K+ used;
br. frac. with
Ds1(2536)+→D* +K0
in paper
B(Ds1(2536)+→D* 0K+)
B(Ds1(2536)+→D* +K0)
= 1.32 ± 0.47 ± 0.23
ALEPH  
B+→DsJ(2700)+D0, DsJ(2700)+→D0K+ : 11.3 ± 2.2 ± 1.42.8 Belle
B(Ds1(2460)±→Ds+γ)
B(Ds1(2460)±→Ds+π0γ)
= 0.337 ± 0.036 ± 0.038
B(Ds1(2460)±→Ds+π+π)
B(Ds1(2460)±→Ds+π0γ)
= 0.077 ± 0.013 ± 0.008
BaBar 95% C.L. U.L.
B(Ds1(2460)±→Ds* ±π0) = (56 ± 13 ± 9)%
B(Ds1(2460)±→Ds+γ) = (16 ± 4 ± 3)%
BaBar  
B(DsJ(2632)+→D0K+)
B(DsJ(2632)+→Ds+η)
= 0.14 ± 0.06
SELEX not seen by other exp's;
sys. err. not given
Quantum
numbers
(JP)
AL=2(Ds1(2536)±→D* ±KS)
AL=0(Ds1(2536)±→D* ±KS)
=

=(0.63 ± 0.07 ± 0.02)Exp[±i(0.76 ± 0.03 ± 0.01)]
Belle D-/S-wave amp. ratio
Ds0(2317)± : 0+, 1, 2+, ... BaBar natural JP based
on JP conserv.
Ds1(2536)± : 1+, 1 BaBar 1 preferred over 2+
with sign. ∼ 4σ;
1+ preferred over 2
with sign. ∼ 3σ;
DsJ(2700)± : 1 Belle 1 preferred over 0+, 2+
with sign. > 10σ
DsJ(2860)± : 0+, 1, 2+, ... BaBar natural JP based
on JP conserv.
Ds1(2460)± : 1+ Belle 1+ preferred over 2
with sign. ∼ 6σ
Ds1(2460)± : J ≠ 0 BaBar 0 disfavored
with sign. ∼ 5σ;
assuming decay
Ds1(2460)±→Ds* ±π0
→Ds+γπ0


Last modified . Send comments to Bostjan Golob.