Fisica del Sapore
Federico Mescia e Marco Rescigno
INFN-Frascati
INFN-Roma1
IFAE 2007 - 11-13 Aprile, 2007 - Napoli
Il Sapore d’Italia
L.Calibbi:
M.Bomben(Babar): CKM
Leptoni in SUSY-GUT
S.Pagan Griso (CDF):
TRIESTE
Dms e DGs
A.Ferroglia:
b->sg a NNLO
V.Vagnoni (Utfit):
PARMA
Analisi B0 - B0, K0 - K0 D0 - D0
PADOVA
TORINO
S.Dussoni: MEG
BOLOGNA
GENOVA
R.Cenci (Babar):
G.Lamanna: P326
PISA
fisica del t
D.Guadagnoli:
PERUGIA
B0 - B0 e SUSY
D.Tonelli (CDF): B rari
ROMA3
C.Tarantino:
oscillazioni B0 - B0 in MS
P.Paradisi:
ROMA1
B, K e leptoni a grande tanb
ROMA2
FRASCATI
A.De Santis (KLOE):
S.Torre (CDF):
Fisica dei K0
BARI
NAPOLI
Produzione del b
N.Tantalo:
COSENZA
QCD sul reticolo
CAGLIARI
S.Meola (KLOE):
Fisica dei K+
R.Ferrandes:
B rari e extra dim.
D.Monorchio (Babar):
B rari e B->tn
Versante:
Test di Precisione
W.Bonivento: LHCb
D. Policicchio: Atlas
Versante:
Ricerche di Nuova Fisica
Flavour Physics – Introduction
L SM (Ai ,Qi ,Li ,H)
Measurements =
ci6  Oi6
i 2 +
flav

L lept (Li )
L QCD (Qi ,A)
L weak  ULg  VCKM DL W 
new physics contributions
- Indirect searches of NP ->
thanks new virtual particles,
mediating Lepton & B, D, K decays
• flavour violation
• unitary matrix
• one phase
• B, D, K FC decays
• strong correlations
•
|Vus|2+|Vud|2=1
CP violation studies
& U.T.
H++
Exp. inputs from
• Babar-Belle: Bd,B+ physics ->
sin(2b), g, a, B->pln, B->D*ln …
• CDF- D0: Bs physics -> Dms, DGs …
Bomben’s
Pagan Griso’s
Meola’s & De Santis
• KLOE-NA48: K physics: eK,Kl3, Kl2 …
Excellent overall consistency
Experimental effort dilute by theory precision. Tough to improve it!
• Lattice QCD: BK, fB, BB
Tantalo’s
• OPE at small scales?: Vub Ferrero e Di Giustino’s,
b->sg NNLO Ferroglia’s
Flavour Physics Report: CKM tests
15%
Bomben
Flavour Physics Report: CKM tests
4%
Bomben
45%
Bomben
20% average
With LHCb at
L=10 fb-1 (around 2014)
g
will be known at about 2°
Vagnoni
Bonivento
Flavour Physics Report:
a
Bomben
sin(2aeff)
La promessa
B0K+p-
B0sK-p
B0sK-p
Flavour Physics Report: CKM tests
Meola
Flavour Physics Report: SM tests
De Santis
22 exp. Inputs, mostly from kloe
1.
Particle - antiParticle
Oscillations
B -B
0
d
0
d
K -K
0
0
B -B
0
s
0
s
D -D
0
0
Tarantino
Pagan Griso
Recent measurements from the Tevatron DGs, Gs and Bs
Pagan Griso
A sfs  Im
G12
M12
Vagnoni
Tarantino: SM predictions
Tarantino: SM predictions
DF=2 oscillations New Physics Searches/Constraints
Two General Strategies
Model-independent fits
Cq e
2iq

F Hfull
eff F
F HSM
eff F
In the CKM fit, we fix r, h, CBq,
Bq, CeK and CDmK
simultaneously, assuming no
NP on tree-level processes
Vagnoni - UtFit
Explicit Models
MSSM-(MFV) at
small tanb
Guadagnoli
MFV at large tanb
Paradisi
Vagnoni - UtFit
 flav
Vagnoni - UtFit
 flav
Guadagnoli
2.
Decadimenti radiativi:
– bsg
• Decadimenti leptonici
– Btn
– Be/ n
• Decadimenti semileptonici
– BK(*)ll
– Bpll
Talk da
Babar,CDF,Atlas nella
sessione
THEORY PROGRESS
some of the
contributions
Ferroglia
7%
Ferroglia
Challenging !
Monorchio
(babar)
Monorchio
(babar)
Monorchio
(babar)
New Physics Searches/Constraints
No significant deviations from SM, but the +/- pattern looks consistent with present data
Paradisi
Ferrandes
25/45
New physics on the flavour sector
Do’ scappi!
LFV
• zero in the SM
Lepton Universality
in K and B
SM tree-level contribution
accessible to very high
precision
Rare K decays:
B rare Decays
•
•
•
•
e.w loops
highest CKM suppression
DS=1 coupling like e’/e
very clean like sin2b
Paradisi
Bs 
Tonelli CDF
Monorchio
(babar)
Monorchio
(babar)
Giugno 2007
Ottobre 2007
Dussoni
(MEG)
Bd 
Lamanna
(P326)
Policicchio
(Atlas/CMS)
Bonivento
(Lhcb)
B rare Decays
Bs    -
Molte chance di uccidere
Bs
SUSY -> Bs  -
Integrated Lumi/experiment (fb-1)
SM -> Bs    -9
 eg  .2 -
Rivelatore molto ambizioso come prestazioni
Dussoni
(MEG)
Dussoni
(MEG)
 eg  .2 -
1 ordine di grandezza meglio del current limit dopo 1 mese di presa dati
 eg  .2 -
Ottobre 2007
Calibbi
Paradisi
Lamanna
Effetti gia’ 1%
Lamanna
Some Prospects from theory side
Tantalo
Vcb
Ferrera – Di Giustino
Vub
• complementarity to Atlas/CMS direct searches  new
particles
• New dedicated high sensitivity experiments starting up
• more diverse experimental panorama in the (very) near
future
•
Theory uncertainties?
Grazie a tutti i presentatori