0- %20Klempt

1
0- Klempt
No eta(1295) eta(14401780) 2S Ggt2GeV to be
found
Why 1440 so big in psi radiative?
pi_1(1600) in rho pi OK similar width to
b1pif1pi Hybrid character OK BUT pi_1(1400)
what is it? How many 1- Resonant? S-wave
threshold effects molecules... Pi(1850)
hybrid? KK? More than one??
1- Eugenio
Pwa ambiguities affect output. What/which are the
real resonance states? Then consider what they are
Pennington
2
Arndt Buccella Carlson Dyakanov Ellis Faber Gianni
ni Huang Inoue Jaffe Karliner Lipkin Maltman Nussi
nov Oh Polyakov Qiang Rosner Stech Trilling U Vene
ziano Wilczek Xiang Yang Zhu
If Theta doesnt exist, then these (and many
other theorists) should be congratulated on their
creativity
3
Include zero sigma expts (many) start with
those and then compare the claimed signals
psychological different conclusion
FC Less optimistic
Dont fall into creationism trap if you cant
explain then it proves I am right. Null result
that is not inconsistent with a signal is NOT
support for the signal.
HERA Ksp if real could be conventional Sigma
is NOT support for Theta_5
When appealing to models take account of ALL
their implications e.g. of Sigma_5 narrow that
should also be produced.
4
New Heavy Mesons
Lou Maiani Close
Name Mass (MeV) Width (MeV) comments
X(3872) 3871.9?0.6 narrow J/ypp, D pair
X(3940) 3943?6 ?6 lt52 Recoil mass Large D pair B.R. wJ/y not seen
Y(3940) 3943?11?13 87?22?26
Y(4260) 4259?8 ?26 88?23 ?64 J/ypp-, D pair not seen
What is it?
1,?
hc(3S)?
hybrid?
1--,?
cc2?
Z(3930) 3931?4?2 20?8?3 D pair
5
???
ee- to X
Belle
6
Inconsistent strengths?
Belle
and1 ?
radial ?? thresholds
big ?
7
Claim of Hybrid Charmonium by BELLE
Is this the same as X(3940)? Is it hybrid
charmonium as claimed? (See if is in psi rho as
well)
8
New Heavy Mesons
Lou Maiani Close
Name Mass (MeV) Width (MeV) comments
X(3872) 3871.9?0.6 narrow J/ypp, D pair
X(3940) 3943?6 ?6 lt52 Recoil mass Large D pair B.R. wJ/y not seen
Y(3940) 3943?11?13 87?22?26
Y(4260) 4259?8 ?26 88?23 ?64 J/ypp-, D pair not seen
What is it?
1,?
hc(3S)?
hybrid?
1--,?
cc2?
Z(3930) 3931?4?2 20?8?3 D pair
9
ee- \to psi pi pi BaBar sees new vector cc
Y(4260)
10
BaBar B decay to Y(4260)
11
Y(4260) Three Possibilities
Maiani
Close
Y(4260) Non resonant S-wave threshold
Close
Lou
Probably not.
12
Is it really a resonance?
ee- DD_1
is first S-wave charm threshold and occurs \sim
4.2 GeV !
psi
D
D_1
uu pi pi
ee- Ds Ds_1 psi KK
should show similar
Lou
13
f0(980)?
Maybe Confirm.
14
All consistent with predictions for hybrid
charmonium FCPage 1995
15

This is a clear distinction with hybrid for which
this is zero
16
Maiani



Close
Psi polarisation test HQ symmetry would imply no
psi but also no 4260 For m_c DD_1 threshold and
below DD_0
17
Y(4260) Two Possibilities
Maiani
Close
DD_1 and not DsDs for hybrid DsDs and not DD_1
for tetraquark
Experiment can decide