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)→Dsπ0)
= 0.55 0.13 0.08
B(Ds1(2460)→Ds+π+π)
B(Ds1(2460)→Dsπ0)
= 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)→Dsπ0)
σ(Ds+)
= (3.5 0.9 0.2) 10−2
CLEO  
B(Ds1(2536)→Dπ+K)
B(Ds1(2536)→DK0)
= (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)→Dsπ0) = (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)→DKS)
AL=0(Ds1(2536)→DKS)
=

=(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)→Dsπ0
→Ds+γπ0


Last modified . Send comments to Bostjan Golob.