Flavour Physics - IJCLab Events Directory (Indico) · 2008. 10. 21. · Flavour Physics A. Pich –...

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


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)


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 = ±


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


LEPTON UNIVERSALITYLEPTON UNIVERSALITY

e

gg

μ

ggμ

τ


/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


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 →

+

⎠

→+⎝ ⎠


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


||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


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


Neutron Decay:

(PIBETA)

||VVudud| Summary| Summary

||VVudud| = 0.97377 | = 0.97377 ±± 0.000270.00027

Superallowed Nuclear β Transitions :

Pion Decay:


KKl3l3 DecaysDecays E865, ISTRA+, KLOE, KTEV, NA48

M. Moulson 07

FLAVIAnet Kaon WG

Ke3 Kμ3

Form Factor Slopes


J. Portolés

Large O(p6) ChPT correction(Bijnens-Talavera)

O(p4)

O(p6)


Γ( K+ → μ+ νμ ) / Γ( π+ → μ+ νμ ) (Marciano 04)

(MILC 06)

(Jamin-Oller-Pich 06)

(PDG 06)


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)


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


KLOEKLOECPLEAR: < 1.4 • 10-7

2.7 σ from NA48

Proposals to upgrade DAΦNE in Luminosity (and Energy)


NA48NA48Direct

Slope Asymmetry

CP

1.8 ± 1.8-1.5 ± 2.1

First observation

First measurement

PDG 06: 2.45 ± 0.11


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 −→ < ×


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


• 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


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


D0

D+

DsAbsolute Hadronic Br’s

CLEO-c


I. Danko (La Thuile 07)

arXiv:0704.0629


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


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


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


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


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


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


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)


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


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


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


Minimal Lepton

Flavour Violation

G. Isidori


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


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


Backup Slides


D. Asner


KTeVKTeVH. Nguyen (Moriond 07)

Future Kaon InitiativesPlans for KL→p 0nn KL→p 0l+l- Event statistics

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Flavour Physics - IJCLab Events Directory (Indico) · 2008. 10. 21. · Flavour Physics A. Pich –...

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