FlavourFlavour PhysicsPhysicsWithWith OtherOther FacilitiesFacilities
A. PichIFIC , Valencia
5th Super B Workshop – Paris , 9-11 May 2007
Flavour Physics A. Pich – Super B 2007
, ,eu c td e s b
μ τν ν νμ τ− − −
⎛ ⎞ ⎛ ⎞ ⎛ ⎞⎜ ⎟ ⎜ ⎟ ⎜ ⎟⎝ ⎠ ⎝ ⎠ ⎝ ⎠
FlavourFlavour StructureStructure ofof thethe Standard Standard ModelModel
Why 3 ?WhyWhy 33 ??
• Pattern of masses
• Flavour Mixing
• CP
Related to SSB
Scalar Sector (Higgs)
• Kaon Factories : u , d , s
• τcF : c , τ , ντ• BF, SuperB : b , c , τ
• LC : t , …
• νF : νe , νμ , ντ
Flavour Physics A. Pich – Super B 2007
W
μνμ +
e+eν
MuLan 2007
kicker
μ/e separator
New World Average:
τμ = 2.197 019 (21) μs GF = 1.166 371 (6) x 10-5 GeV-2 (5 ppm)
τμMuLan = 2.197 013 (24) μs (11 ppm)
( Final Goal 1ppm )
2 5
QED3
1 (1 )192FG mμ
μδ
πτ= +
δQED known to 0.3 ppm
(van-Ritbergen & Stuart)
Flavour Physics A. Pich – Super B 2007
W
τντ −
,e μ− −
,e μν ν
150.972564 0.000010 (1632.1 1.4) 10 seB
B μ ττ −= =± ± ×
2 52 2
EW3( ) ( / )192F
llG ml f m m rτ τττ ν ν π
Γ → =
3 4 2( ) 1 8 8 12 logf x x x x x x= − + − −
EW 0.9960r = (Marciano-Sirlin)
( )exp/ 0.9725 0.0039eB Bμ = ±
Flavour Physics A. Pich – Super B 2007
1776.71 0.13 0.32 MeV
(PDG06)
(BE
0.251776.8
LLE)
(KEDR0 0.15
0.29 MeV0
Me
.2
)
6
V0.22
1776.99mτ±
±
+
±
−
±
=
ττ , Br(τ → μ) , Br(τ → e) ∼ 0.3% precision
BABAR , BELLE , KEDR , BESIII , SuperB , …Future Improvements:
• τ +
° τ –
τ → 3π ντpseudomass
BELLE± 0.14
ResonanceDepolarization
Method
δmτ ~ 0.023 MeV (12.7 ppm) BESIII
Flavour Physics A. Pich – Super B 2007
LEPTON UNIVERSALITYLEPTON UNIVERSALITY
e
gg
μ
ggμ
τ
Flavour Physics A. Pich – Super B 2007
/g gτ μ
K K
W W
eB
B B
τ μ τ
τ π π μ
τ μ
τ μ
τ τ→
→ →
→ →
→ →
Γ Γ
Γ Γ
1.0004 0.0022
0.996 0.005
0.979 0.017
1.039 0.013
±
±
±
±
/ eg gμ
K K
K K
W W
e
e
e
e
e
B B
B B
B B
B B
B B
τ μ τ
π μ π
μ
π μ π
μ
→ →
→ →
→ →
→ →
→ →
1.0000 0.0020
1.0017 0.0015
1.012 0.009
1.0002 0.0026
0.997 0.010
±
±
±
±
±
W W e
B
B Bτ μ μ τ
τ
τ τ→
→ →
1.0004 0.0023
1.036 0.014
±
±
/ eg gτ
Flavour Physics A. Pich – Super B 2007
AssumingAssuming UniversalityUniversality::
/2 2
2 2/
( ) 0.2611
7 0.005( )
K
K K
us
ud
m m Km m
VR
fV f
Rτττ
τ π
π
τ π
τ
τ ντ π δν
δ− −− −
⎛ ⎞− Γ →= = ±⎜
+⎟⎜ ⎟− Γ →⎝ ⎠
⎟ +⎛ ⎞⎜⎝ ⎠
2 2 3
2 2 3 0.2( )( )
7618 0.0001
41
8K KK K
us
ud
RR
V fV
m m Km m mfm μ
μ
π
π
π
μπ
μ ν μπ
δδν μ
− −
− −
Γ⎛ ⎞−= = ±⎜ ⎟⎜ ⎟−⎝
⎛ ⎞⎜ ⎟ Γ →
+
⎠
→+⎝ ⎠
Flavour Physics A. Pich – Super B 2007
W
jdiu
e−
eν
ijV
Measure the q2 distribution
Measure Γ
Get a theoretical prediction for
Theory is always needed: Symmetries
VVijij DeterminationDetermination (0- → 0-)K→π lν , D→Κ lν ...
suppressed
Flavour Physics A. Pich – Super B 2007
||VVudud||
(Marciano – Sirlin)||VVudud| = 0.97377 | = 0.97377 ±± 0.000270.00027
Superallowed Nuclear β Transitions (0+ → 0+)
PDG06
Revised Q[46V] (2005)
Hardy-Towner-Savard
Flavour Physics A. Pich – Super B 2007
Neutron Decay:(Czarnecki – Marciano – Sirlin)
PDG06: τn = (885.7 ± 0.8) s , gA = 1.2695 ± 0.0029
τn = (878.5 ± 0.7 ± 0.3) s
(Serebrov et al, 2005)
T.M. Ito
PDG06
gA
T.M. Ito
Flavour Physics A. Pich – Super B 2007
Neutron Decay:
(PIBETA)
||VVudud| Summary| Summary
||VVudud| = 0.97377 | = 0.97377 ±± 0.000270.00027
Superallowed Nuclear β Transitions :
Pion Decay:
Flavour Physics A. Pich – Super B 2007
KKl3l3 DecaysDecays E865, ISTRA+, KLOE, KTEV, NA48
M. Moulson 07
FLAVIAnet Kaon WG
Ke3 Kμ3
Form Factor Slopes
Flavour Physics A. Pich – Super B 2007
J. Portolés
Large O(p6) ChPT correction(Bijnens-Talavera)
O(p4)
O(p6)
Flavour Physics A. Pich – Super B 2007
Γ( K+ → μ+ νμ ) / Γ( π+ → μ+ νμ ) (Marciano 04)
(MILC 06)
(Jamin-Oller-Pich 06)
(PDG 06)
Flavour Physics A. Pich – Super B 2007
200
00
( ) 1k l
skl dRs sR s dss m ds
ττ
τ
⎛ ⎞ ⎛ ⎞≡ −⎜ ⎟ ⎜ ⎟
⎝ ⎠⎝ ⎠∫
2 2
2 2 2, , ( )24 ( )kl kl
klkl
s
usud
ud Ss
R R m mRmVV
τ
τ
τ ττδ α≡ − ≈ Δ
Gámiz-Jamin-Pich-Prades-Schwab
2 GeV( ) 94 6 MeVsm = ±
exp th0.2220 0.0031 0.0011usV = ± ±
Simultaneous ms & Vus fit possible with better dataThe τ could give the most precise Vus determination
Rτ,S= Γ( τ− → ντ S− ) / Γ( τ− → ντ e− νe)
Flavour Physics A. Pich – Super B 2007
τ Decay:
||VVusus| Summary| Summary
||VVusus| = 0.2230 | = 0.2230 ±± 0.00150.0015
Kl3 :
Kμ2 / πμ2 :
Hyperon Decay:
2 2 2ud us ubV + V + V = 0.9980 ± 0.0015
Flavour Physics A. Pich – Super B 2007
KLOEKLOECPLEAR: < 1.4 • 10-7
2.7 σ from NA48
Proposals to upgrade DAΦNE in Luminosity (and Energy)
Flavour Physics A. Pich – Super B 2007
NA48NA48Direct
Slope Asymmetry
CP
1.8 ± 1.8-1.5 ± 2.1
First observation
First measurement
PDG 06: 2.45 ± 0.11
Flavour Physics A. Pich – Super B 2007
K K →→ ππ νν νν̄̄( ) ( )* 2 2, / L L L LWis iid s d KF V V m M μ μν γ ν π γT ∼
Buras et al( )
( )
11
0 1
4
21
2 2
4
Br (8.4 1.0) 10
Br (2.7 0.
(1.4 )
4) 10L
K
K
A
A
η ρπ ν ν
π ν ν η
+ + −
−
⎡ ⎤+ −⎣→ = ± ⎦×
→ = ± ×
∼
∼
Long-distance contributions are negligible
CP( )0 0LK π ν ν→ ≠T
NewNew ExperimentsExperiments NeededNeeded
BNL: BNL: few events!
KEKKEK--E391a:E391a:
( ) ( ) 101.300.89Br 1.47 10K π ν ν+ + −+−→ = ⋅( )0 7Br 2.1 10 (90% C.L.)LK π ν ν −→ < ×
Flavour Physics A. Pich – Super B 2007
Future Kaon Initiatives
J-PARCΛ Ξ hypernucleiK Rare Decay
U-70
Φ factoryHadron xsecKS decays, interferometry
CERN-SPSRare K decaysLFVChiral dynamics
Frequent K decays
A. Ceccucci
NA48/2 → 2 ×1011 kaon decaysP-326 (NA48/3) → > 1013 kaon decays
Δ[Br(K+→π+νν)] ~ 0.10
Flavour Physics A. Pich – Super B 2007
• J-PARC: LoI ; plans to use the BNL-E949 detector
• CERN: P-326 ; about 80 SM events in two years
Plans for K+→ π+νν
• KEK: E391a ; data taking completed (three runs)– Present limit < 2.1 10 -7 90% CL (10% of Run-1 data)
– Aims to reach the Grossman-Nir bound (~10 -9)
• J-PARC: proposal (>2010)– Step I: E391a detector at J-PARC ~ SM sensitivity
– Step II: New detector & dedicated beam-line ~ 100 SM events
• CERN: would need an upgraded proton complex
Plans for KL→π 0νν
Flavour Physics A. Pich – Super B 2007
K. Komatsubara
KL→π 0l+l−
Plenty of Room for New Physics
ψ(3770) Analysis Strategy
high tagging efficiency: ~22% of D’s Compared to ~0.1% of B’s at the Y(4S)
e+Dsig
e−D tag
π −K +
π −
π +
π +K −
ψ(3770) is to charm what Y(4S) is to beauty
(3770),
DD K
DD K
ψ
ππ ππ
+
+ − + +
−
− + − −→
→
→
Pure DD, no additional particles (ED = Ebeam).σ (DD) = 6.4 nb (Y(4S)->BB ~ 1 nb)Low multiplicity ~ 5-6 charged particles/event
e+e- ψ(3770) DD
CLEO-c DATA
A little luminosity goes a long way: # events in 100 pb-1 @ charm factory with 2D’s reconstructed ~ # events in 500 fb-1 @ Y(4S) with 2B’s reconstructed Charm 2006 June 5-7 2006 Beijing Charm Perspective Ian Shipsey
Flavour Physics A. Pich – Super B 2007
D0
D+
DsAbsolute Hadronic Br’s
CLEO-c
Flavour Physics A. Pich – Super B 2007
I. Danko (La Thuile 07)
arXiv:0704.0629
Flavour Physics A. Pich – Super B 2007
SEMILEPTONIC DECAYSSEMILEPTONIC DECAYS
0eD K e ν
− +→
2( ) / (0)f q f
0eD K l ν
+ −→
2( ) / (0)f q f
Vcs , Vcd f(0)th
Important Tests of Non-Perturbative QCD Tools
Relevant to Improve Predictions for B’s
Flavour Physics A. Pich – Super B 2007
RARE DECAYSRARE DECAYS
D. Asner
GIM, FCNC, virtual loops, …
Sensitive to New Physics
2310−
CLEO-c
BranchingFraction
I. Shipsey
c
u l−
l+
d , s ν
Flavour Physics A. Pich – Super B 2007
c d , s u
u d , s c
c
u c
u
d , s d , sDD00 –– DD00 MIXINGMIXING––
∆ x , SMy , SMx , BSM
H. Nelson, A.A. Petrov
Intermediate down-type quarks
b contribution negligible (~1%)
ΔM ~ [SU(3) Breaking]2
Very sensitive to long-distance effects
very suppressed in the SM
: unambiguous signal of New Physics
CP
CP
Flavour Physics A. Pich – Super B 2007
D. Asner
yCP = y cos φ + x Δ sin φ → y
x' = x cos δ + y sin δ
y' = y cos δ - x sin δ
CP
1.12 ± 0.32
Flavour Physics A. Pich – Super B 2007
D. Asner
DD00 –– DD00 MIXINGMIXING––
cosδ =1.09 ± 0.66
5σ contour excludes x=y=0
cosδ =1.0 ± 0.1
3.3 33.0(8.5 ) 10x
+ −−= ×
1.6 31.8(6.3 ) 10y
+ −−= ×
x = (8.8−3.3+3.0) ×10−3
y = (6.7−2.0+2.1) ×10−3
Flavour Physics A. Pich – Super B 2007
SEARCHES FOR IN D DECAYSSEARCHES FOR IN D DECAYSCP
I. Shipsey
Direct CP
SM Expectations: ACP ≤ 0.1% in SCS, negligible in CA & DCS
Larger Signals New Physics
Strong phase-shifts needed
Non-perturbative uncertainties
Flavour Physics A. Pich – Super B 2007
Event statisticsPhysics Channel
Energy(GeV)
Luminosity(1033 cm–2s –1)
Events/year
J/ψ 3.097 0.6 1.0×1010
τ 3.67 1.0 1.2×107
ψ’ 3.686 1.0 3.0 ×109
D* 3.77 1.0 2.5×107
Ds 4.03 0.6 1.0×106
Ds 4.14 0.6 2.0×106
BESIIIBESIIIThreshold Advantages
(Systematics & Backgrounds)
Flavour Physics A. Pich – Super B 2007
Neutrino Neutrino OscillationsOscillations e μν ν↔
μ τν ν↔
mν ≠ 0 NEW PHYSICS
CPLepton Number Violation. Lepton Mixing. Leptonic
mν > 0.05 eV Λ / cij < 1015 GeV
21h.c. h.c. ;2
vL Lij ij
it c c
i j i jj ijLc
M MLc
φ φ ν ν− ⎯⎯⎯→ ≡Λ
+Λ
− +SSBWeinberg:
Leptogenesis Baryogenesis
Flavour Physics A. Pich – Super B 2007
LEPTON FLAVOUR VIOLATIONLEPTON FLAVOUR VIOLATION90% CL Upper Limits on Br(l − → X −) [BABAR / BELLE]
Decay U.L. Decay U.L. Decay U.L.
μ−→ e−γ 1.2 ⋅ 10−11 μ−→ e−e+e− 1.0 ⋅ 10−12 μ−→ e−γγ 7.2 ⋅ 10−11
τ−→ e−γ 1.2 ⋅ 10−8 τ−→ e−e+e− 2.0 ⋅ 10−7 τ−→ e−e+μ− 1.9 ⋅ 10−7
τ−→ μ−γ 4.5 ⋅ 10−8 τ−→ e−μ+μ− 2.0 ⋅ 10−7 τ−→ μ−e+μ− 1.3 ⋅ 10−7
τ−→ e−e−μ+ 1.1 ⋅ 10−7 τ−→ μ−μ+μ− 1.9 ⋅ 10−7 τ−→ e−π0 1.3 ⋅ 10−7
τ−→ μ−π0 1.1 ⋅ 10−7 τ−→ e−η’ 2.4 ⋅ 10−7 τ−→ μ−η’ 1.4 ⋅ 10−7
τ−→ e−η 1.6 ⋅ 10−7 τ−→ μ−η 1.5 ⋅ 10−7 τ−→ e−Κ* 3.0 ⋅ 10−7
τ−→ e−ΚS 5.6 ⋅ 10−8 τ−→ μ−ΚS 4.9 ⋅ 10
−8 τ−→ μ−ρ0 2.0 ⋅ 10−7
τ−→e−K+K− 1.4 · 10−7 τ−→e−K+π− 1.6 · 10−7 τ−→e−π+K− 3.2 · 10−7
τ−→μ−K+K− 2.5 · 10−7 τ−→μ−K+π− 3.2 · 10−7 τ−→μ−π+K− 2.6 · 10−7
τ−→e−π+π− 1.2 · 10−7 τ−→μ−π+π− 2.9 · 10−7 τ−→Λπ− 0.7 ⋅ 10−7
τ−→e+K−K− 1.5 · 10−7 τ−→e+K−π− 1.8 · 10−7 τ−→e+π−π− 2.0 · 10−7
τ−→μ+K−K− 4.4 · 10−7 τ−→μ+K−π− 2.2 · 10−7 τ−→μ+π−π− 0.7 · 10−7
Flavour Physics A. Pich – Super B 2007
M. Blanke et al, LHT
M.J. Herrero
MEG:
Br(μ→eγ) ~ 10-13
Prism:
Pr(μ→e) ~ 10-18
SuperB:
Br(τ →µγ) ~ 10-9
Flavour Physics A. Pich – Super B 2007
Minimal Lepton
Flavour Violation
G. Isidori
Flavour Physics A. Pich – Super B 2007
Jamin-Pich-Portolés
ττ−− →→ ννττKK00 ππ−− , ν, νττKK
−−ππ00
in in ττ DecaysDecaysCP
I.M. Nugent
B. Schwartz
Two Interfering Amplitudes (Dalitz Plot)
SM Strong Phase can be determined
Blind Search for New Physics
Flavour Physics A. Pich – Super B 2007
Huge statistics
Non-b shopping list :
Lepton Flavour Violation studies
in the charm sector
FCNC & Rare D decays
Universality & Lorentz structure of weak decays (τ)
First hints on leptonic
…
CP
CP
Flavour Physics A. Pich – Super B 2007
Backup Slides
Flavour Physics A. Pich – Super B 2007
D. Asner
Flavour Physics A. Pich – Super B 2007
KTeVKTeVH. Nguyen (Moriond 07)
Future Kaon InitiativesPlans for KL→p 0nn KL→p 0l+l- Event statistics
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