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→D−Ds0(2317)+, Ds0(2317)+→ Ds+π0 : 8.6 ± 3.32.6 ± 2.6
B0→D−Ds1(2460)+, Ds1(2460)+→ Ds* +π0 : 22.7 ± 7.36.2 ± 6.8
B0→D−Ds1(2460)+, Ds1(2460)+→ Ds+γ : 8.2 ± 2.21.9 ± 2.5 		Belle further br. frac. for
B0, B± in paper
B0→D−Ds0(2317)+, Ds0(2317)+→ Ds+π0 : 18 ± 4 ± 3 ± 64
B0→D−Ds1(2460)+, Ds1(2460)+→ Ds* +π0 : 28 ± 8 ± 5 ± 106
B0→D−Ds1(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.