Pavel Pakhlov MEPhI, Moscow Flavor physics at Super B factories era International conference on particle physics and astrophysics, Milan Hotel 4*, Moscow,

Slides:



Advertisements
Similar presentations
Measurement of  David Hutchcroft, University of Liverpool BEACH’06      
Advertisements

Measurements of the angle  : ,  (BaBar & Belle results) Georges Vasseur WIN`05, Delphi June 8, 2005.
Measurements of the angles of the Unitarity Triangle at B A B AR Measurements of the angles of the Unitarity Triangle at B A B AR PHENO06 Madison,15-18.
CERN, October 2008PDG Collaboration Meeting1 The CKM Quark-Mixing Matrix Revised February 2008 A. Ceccucci (CERN), Z. Ligeti (LBNL) and Y. Sakai (KEK)
MSSM Precision tests of the flavours in the SM Model Indep. Analysis in  B=2 MFV, mainly high tan  scenarios Achille Stocchi (LAL-IN2P3/CNRS)
Charm results overview1 Charm...the issues Lifetime Rare decays Mixing Semileptonic sector Hadronic decays (Dalitz plot) Leptonic decays Multi-body channels.
Andrey Golutvin Moriond Prospects of search for New Physics in B decays at LHC Andrey Golutvin ITEP / Moscow - In CP - violation - In rare decays.
Title Gabriella Sciolla Massachusetts Institute of Technology Representing the BaBar Collaboration Beauty Assisi, June 20-24, 2005 Searching for.
Current Methods of determining V ub I. Endpoint of the inclusive lepton spectrum II. Exclusive decays Methods of determining V ub with small theoretical.
Search for B s oscillations at D  Constraining the CKM matrix Large uncertainty Precise measurement of V td  properly constrain the CKM matrix yield.
The physics of b s l + l - : 2004 and beyond Jeffrey Berryhill University of California, Santa Barbara January 19, 2004 Super B Factory Workshop University.
Pakhlov Pavel (ITEP, Moscow) Why B physics is still interesting Belle detector Measurement of sin2  Rare B decays Future plans University of Lausanne.
Measurements of Radiative Penguin B Decays at BaBar Jeffrey Berryhill University of California, Santa Barbara For the BaBar Collaboration 32 nd International.
Toru Iijima & Koji Ikado (Talk presented by T.I.) Nagoya University May 15, 2006 “Flavour in the LHC CERN The First Evidence of B   from Belle.
1 B s  J/  update Lifetime Difference & Mixing phase Avdhesh Chandra for the CDF and DØ collaborations Beauty 2006 University of Oxford, UK.
The new Silicon detector at RunIIb Tevatron II: the world’s highest energy collider What’s new?  Data will be collected from 5 to 15 fb -1 at  s=1.96.
Takeo Higuchi Institute of Particle and Nuclear Studies, KEK Jan 21, 2004 Hawaii, USA Super B Factory Workshop Charged Higgs Search with B  D   
1. 2 July 2004 Liliana Teodorescu 2 Introduction  Introduction  Analysis method  B u and B d decays to mesonic final states (results and discussions)
1. Outline 2 Dr. Prafulla Kumar Behera, IIT Madras 9 th June 2015.
Luca Lista L.Lista INFN Sezione di Napoli Rare and Hadronic B decays in B A B AR.
P Spring 2003 L14Richard Kass B mesons and CP violation CP violation has recently ( ) been observed in the decay of mesons containing a b-quark.
Wolfgang Menges, Queen Mary Measuring |V ub | from Semileptonic B Decays Wolfgang Menges Queen Mary, University of London, UK Institute of Physics: Particle.
CP Violation and CKM Angles Status and Prospects Klaus Honscheid Ohio State University C2CR 2007.
Philip J. Clark University of Edinburgh Rare B decays The Royal Society of Edinburgh 4th February 2004.
M. Adinolfi - University of Bristol1/19 Valencia, 15 December 2008 High precision probes for new physics through CP-violating measurements at LHCb M. Adinolfi.
DIS 2004, Strbske Pleso,April LHCb experiment sensitivity to CKM phases and New Physics from mixing and CP violation measurements in B decays LHCb.
BaBar physics, recent highlights and future prospects Owen Long, BaBar physics analysis coordinator U. C. Riverside & SLAC December 5, 2008.
1 Multi-body B-decays studies in BaBar Ben Lau (Princeton University) On behalf of the B A B AR collaboration The XLIrst Rencontres de Moriond QCD and.
Physical Program of Tau-charm Factory V.P.Druzhinin, Budker INP, Novosibirsk.
1 ICHEP’04, Beijing, Aug 16-22, 2004 A. Höcker – sin2  in Loop-Dominated Decays with B A B AR The Measurement of sin2β (eff) in Loop-Dominated B Decays.
Time-dependent CP violation measurements in B 0 to charm and charmonium modes T.Aushev (ITEP) 1 st Open SuperKEKB meeting KEK,
Pavel Krokovny Heidelberg University on behalf of LHCb collaboration Introduction LHCb experiment Physics results  S measurements  prospects Conclusion.
WIN-03, Lake Geneva, WisconsinSanjay K Swain Hadronic rare B decays Hadronic rare B-decays Sanjay K Swain Belle collaboration B - -> D cp K (*)- B - ->
1 Highlights from Belle Jolanta Brodzicka (NO1, Department of Leptonic Interactions) SAB 2009.
Andrzej Bożek nz11Highlights of the Belle Experiment SAB Review Selection of the most important Belle results since last SAB review (2005):  B 0.
11 th July 2003Daniel Bowerman1 2-Body Charmless B-Decays at B A B AR and BELLE Physics at LHC Prague Daniel Bowerman Imperial College 11 th July 2003.
CP-Violating Asymmetries in Charmless B Decays: Towards a measurement of  James D. Olsen Princeton University International Conference on High Energy.
1 BaBar & Belle: Results and Prospects Claudio Campagnari University of California Santa Barbara.
1 A New Physics Study in B  K  & B  K*  Decays National Tsing Hua University, October 23, 2008 Sechul OH ( 吳世哲 ) ( 오세철 ) C.S. Kim, S.O., Y.W. Yoon,
High precision and new CP violation measurements with LHCb Michael Koratzinos, CERN EPS HEP 99 Tampere,15 July 1999.
Study of exclusive radiative B decays with LHCb Galina Pakhlova, (ITEP, Moscow) for LHCb collaboration Advanced Study Institute “Physics at LHC”, LHC Praha-2003,
QFD, Weak Interactions Some Weak Interaction basics
Charm Physics Potential at BESIII Kanglin He Jan. 2004, Beijing
B  K   p  and photon spectrum at Belle Heyoung Yang Seoul National University for Belle Collaboration ICHEP2004.
3/13/2005Sergey Burdin Moriond QCD1 Sergey Burdin (Fermilab) XXXXth Moriond QCD 3/13/05 Bs Mixing, Lifetime Difference and Rare Decays at Tevatron.
A. Drutskoy, University of Cincinnati B physics at  (5S) July 24 – 26, 2006, Moscow, Russia. on the Future of Heavy Flavor Physics ITEP Meeting B physics.
1 Trees, penguins and boxes at LHCb Prospects for CP violation measurements at LHCb Tristan du Pree (Nikhef) On behalf of the LHCb collaboration 14 th.
M.N MinardAspen Winter Meeting LHCb Physics Program On behalf of LHCb collaboration M.N Minard (LAPP) Status LHCb ( R.Jacobson) Single arm spectrometer.
Top Quark Physics At TeVatron and LHC. Overview A Lightning Review of the Standard Model Introducing the Top Quark tt* Pair Production Single Top Production.
BNM Tsukuba (KEK) Sep Antonio Limosani KEK Slide 1 Antonio Limosani JSPS Fellow (KEK-IPNS JAPAN) BMN
CP violation in B decays: prospects for LHCb Werner Ruckstuhl, NIKHEF, 3 July 1998.
THEORETICAL STATUS OF B MESON PHYSICS Blaženka Melić, IRB, Zagreb LHC days in Split 2006, Oct
Update on Measurement of the angles and sides of the Unitarity Triangle at BaBar Martin Simard Université de Montréal For the B A B AR Collaboration 12/20/2008.
1 G. Sciolla – M.I.T. Beauty in the Standard Model and Beyond Palm tree and CKM Beauty in the Standard Model and Beyond Gabriella Sciolla (MIT) CIPANP.
Direct CP violation in D  hh World measurements of In New Physics: CPV up to ~1%; If CPV ~1% were observed, is it NP or hadronic enhancement of SM? Strategy:
CP VIOLATION (B-factories) P. Pakhlov (ITEP). 2 The major experiments to explore CP Kaon system: Indirect CP Violation Direct CP Violation Not useful.
P Spring 2002 L16Richard Kass B mesons and CP violation CP violation has recently ( ) been observed in the decay of mesons containing a b-quark.
CP Violation Recent results and perspectives João R. T. de Mello Neto Instituto de Física Universidade Federal do Rio de Janeiro July,2003.
Belle and Belle II Akimasa Ishikawa (Tohoku University)
Beauty and charm at the LHC, Jeroen van Tilburg, FOM Veldhoven 2014 Jeroen van Tilburg Beauty and charm at the LHC: searches for TeV scale phenomena in.
Measurements of  1 /  Flavor Physics and CP Violation 2010, May 25, 2010, Torino, Italy, K. Sumisawa (KEK)
1 outline ● Part I: some issues in experimental b physics ● why study b quarks? ● what does it take? ● Part II: LHCb experiment ● Part III: LHCb first.
David B. MacFarlane SLAC EPAC Meeting January 25, 2006
Patrick Robbe, LAL Orsay, 20 Nov 2013
CP VIOLATION (B-factories)
SuperB Physics Elba 2011.
CKM Status In this lecture, we study the results summarized in this plot. November 17, 2018 Sridhara Dasu, CKM Status.
Searching for SUSY in B Decays
Yasuhiro Okada (KEK/Sokendai) October 18, 2007
The Measurement of sin2β(eff) in Loop-Dominated B Decays with BABAR
Presentation transcript:

Pavel Pakhlov MEPhI, Moscow Flavor physics at Super B factories era International conference on particle physics and astrophysics, Milan Hotel 4*, Moscow, 5-10 October 2015

Flavor physics in the SM … fermionic (flavor) sector (without neutrino): 3 Yukawa constants for charged leptons: 6 Yukawa constants for quarks 4 quark-mixing parameters Ideally, we have to accept one scale parameter, and expect that dimensionless parameters are some geometrical constants; there is a hint that three gauge constants are related to each other... This is a really miraculous part of the SM. There is no idea why do we have many (3) generations? why are these 13 constants such as they are? why is there a hierarchy & smallness structure? why is the mixing matrix almost unit, but not exactly? All these “Whys?”: The SM flavor puzzle bosonic sector of the SM: 5 free parameters: one defines the scale (vacuum expectation value) + 4 dimensionless coupling constants 2/25P. Pakhlov International conference on particle physics and astrophysics

… and beyond Beyond SM: 13 parameters are too many for a fundamental theory, but not too many to check consistency of the SM predictions for decay/oscillation/CP violation patterns: 500 decays modes (Br’s and UL’s) for B 200 decays for D 40 decays for K (some with BR’s ~ 10 ‒12 !) Flavor physics: SM: in the heart of quark interactions Cosmology: related to matter-antimatter asymmetry Beyond SM: measurements are sensitive to New particles Cosmology: needs CP-violation to produce baryonic asymmetry of the Universe; the only known source of CP violation is a flavor sector of the SM (though it is too small…) non-SM particles (even very heavy) run around in loops 3/25P. Pakhlov International conference on particle physics and astrophysics

Physics at (Super) B factories Hadron spectroscopy: quarkonium, charm and light mesons & baryons γγ –physics: γγ-width, Form-Factors Important inputs to QCD models SM B and D decays: access to (almost all, including complex phase) CKM matrix elements B and D decays: mixing, CP Violation, rare decays Tau leptons: search for Lepton Flavor Violation Direct search for light sterile particles: sterile neutrino, dark photons, axions etc. beyond SM QCD QCD exotics Quarkonium-like states + more exotics? New spectroscopy beyond standard quark model Direct searches for New particles & forbidden decays; indirect check for consistency of SM- pattern 4/25P. Pakhlov International conference on particle physics and astrophysics

Beyond SM at Super B factories Flavor Physics studies processes via box&loop diagrams: FCNC (b → s, b → d) mixing (box diagram) CP Violation (box, box+loop, box+tree, etc…) New particles (e.g. SUSY) even at high mass scale can compete with SM Benefits of Super B factories at e + e ‒ colliders Low backgrounds, high trigger efficiency, high γ and π 0 reconstruction efficiency, high flavor tagging efficiency with low dilution Negligible trigger bias and good kinematic resolution (due to low background) Dalitz analyses, absolute branching fractions Missing mass and missing energy measurements Systematics differ from LHCb Physics beyond the Standard Model must exist. New Physics is required to provide us with Dark Matter, to add CP violation for cosmology, to cut off UV divergences… If New Physics will be found at LHC its flavor and CP violating couplings should be studied at Flavor experiments If New Physics will NOT be found at LHC flavor experiments give a chance to observe NP manifestation even for the mass scale >TeV 5/25P. Pakhlov International conference on particle physics and astrophysics

e + e – asymmetric B-factories PEP-II BaBar ~1 km in diameter KEKB Belle SLAC 3.1 x 9GeV 3.5 x 8 GeV stopped 2008 world highest luminosities Completed data taking on June, 2010 to start SuрerKEKB/Belle II upgrade 6/25P. Pakhlov International conference on particle physics and astrophysics

B factories: 10+ years of success PHYSICS HIGHLIGHTS: From the first observation to precise measurement of indirect CP violation; Measurements of CKM matrix elements and angles of the Unitarity triangle; First observation of direct CP violation in B decays; Measurements of rare B decays: b → sγ: probe of new sources of CPV and constraints on NP from branching B →D (*) τν, B →τν: sensitive to tree non-SM Higgs contribution b → sll: new physics can modify the helicity structure Observation of DDbar mixing + many charm studies; Search for rare τ decays; Direct searches for dark photons, light Higgs, etc, New hadron spectroscopy and many others… All these were possible because of Unique capabilities of B-factories: very clean environment, kinematical constraints, detection of neutrals, hermecity of the detector (detection of neutrino) 7/33P. Pakhlov International conference on particle physics and astrophysics

Angle ϕ 1 (β) is measured with 1 ° accuracy; angles ϕ 2 (α) and ϕ 3 (γ) ~ 5-15 ° accuracy Accuracies for V cb ~ 3%; V ub ~ 10%; V td ~ 7%; V ts ~ 6%; V td /V ts ~ 3% (Δm s ) From CPV observation to precise KM test The allowed area for upper apex is squeezed by almost 2 orders of magnitude b→sg spectrum b→dg transition B→X u lυ B→D * lυ 1995, pre B-factories era Belle & BaBar + LHCb + Tevatron + huge contribution from theory 8/25P. Pakhlov International conference on particle physics and astrophysics

Search for New Physics in CP violation pattern Unitarity triangle (3)(3) α(2)α(2) V ud V ub * V cd V cb * V td V tb * phase of V td phase of V ub 01 (ρ,η)(ρ,η) V cd V cb * β(1)β(1) 9/25P. Pakhlov International conference on particle physics and astrophysics

Precise measurement of sin(2 β ) in B 0 →ccK 0 B 0 tag CP-odd CP-even PRL (2012) Υ(4S)→B 0 B 0 →f CP f tag SM: S f = ‒ sin 2β and A f = 0 + Belle 2012: B →J/ψK 0 s, ψ(2S)K 0 s, χ c1 K 0 s & B →J/ψK 0 L sin(2 β ) = ± ± (0.9 ◦ ) A f = ± ± (direct CPV) 10/25P. Pakhlov International conference on particle physics and astrophysics sin(2 β )

The decay amplitudes B → π + π – (ρ + ρ – ) include: - tree term T ~ V ub * V ud (dominant) - penguin term P ~ V tb * V td (suppressed, but not small) Parameter S of indirect CPV related to effective  (α eff ) shifted by extra angle δ – the relative strong phase between T and P amplitudes r < 1 – ratio of P to T amplitude To extract  additional inputs required  measurements: B 0 → π π The cleanest method is isospin analysis (Gronau and London) We need to measure all 6 BR’s of B 0 and B + to ππ decays: π + π –, π 0 π 0, π + π 0 Need neutral modes! 11/25P. Pakhlov International conference on particle physics and astrophysics

B 0  π + π – S CP = – 0.64 ± 0.06 ± 0.03 A CP = ± 0.06 ± 0.03  : experimental results Complicated analysis (especially for ρ 0 ρ 0 ) method was checked many times by Belle & BaBar Belle & BaBar consistent results Statistics limited (not systematic) B factories only (a lot of neutrals in the final states) Expected errors : 5 ab ‒1 to be 2°, 50 ab ‒1 to be 1° α[WA,all]=( )° B 0  ρ 0 ρ 0 angular analysis purely CP=+1 final state small Br, small penguin contribution B 0  ρ ± π ± not CP eigenstate, but B 0 can decay to both ρ + π – and ρ – π + 12/25P. Pakhlov International conference on particle physics and astrophysics

Direct CPV and  GLW, GGSZ methods: use D 0 decays into two or three-body CP eigenstates. 3-body requires Dalitz analysis. B→DK: the angle between two amplitudes is really , but the final states are different D 0 ≠D 0  V ud V * ub V td V * tb V cd V * cb Aλ 3 (ρ+iη) Aλ3Aλ3 The accuracy of present measurements are limited by statistics (we really study VERY rare decay). The systematic and model uncertainties are much smaller. Sensitivity of Belle II and LHCb upgrade 13/25P. Pakhlov International conference on particle physics and astrophysics

Sides of UT ~|V ub /V cb | Inclusive semileptonic decays |V cb | B → X c l ν |V ub | B → X u l ν Exclusive semileptonic decays |V cb | B → D (*) l ν |V ub | B → π l ν ~|V td /V ts | B d and B s mixing: Δm d /Δm Hadron colliders Radiative decays: b→ sγ, b→ B factories Combined constraints in the (ρ̅, η̅) plane from UT angles&side measurements In 5 years: the square of the allowed region will be reduced by at least 2 order of magnitude: precision consistency check! and consistency check 14/25P. Pakhlov International conference on particle physics and astrophysics

Search for New physics beyond Unitarity triangle 15/25P. Pakhlov International conference on particle physics and astrophysics

Search for SuperPenguins CP asymmetry should be ~ sin2ϕ 1 No tree contribution! Theoretical uncertainty ~ much smaller than the current exp. errors! sin2 ϕ eff ≠ sin2ϕ 1 ? 2006: exciting 3.5 σ discrepancy! now: disappointing nice agreement Expected errors for the golden modes Belle II: 16/25P. Pakhlov International conference on particle physics and astrophysics

Br(B → X s γ) d s d b t γ XsXs W –, H – S/B~1 S/B~20 S/B~200 To reduce model uncertainty need to measure from as smaller E  as possible 17/25P. Pakhlov International conference on particle physics and astrophysics

Purely leptonic decay τ υ b u H–H– Reconstruct one B fully in hadronic or semileptonic decay, see one track from τ-decay, check that there is no extra energy deposition in the event ~m τ ~m b tanβ WA: Br(B → τν) = (1.14 ± 0.22)×10 ‒4 τ υ b u W–W– Belle II: Improve accuracy by ~5 18/25P. Pakhlov International conference on particle physics and astrophysics

New physics: virtual particles in B-decays vs direct searches sensitive to NP at LHC scale and above B →D (*) τν Br(B →τν) constrains m H + - tanβ plane and rule out certain charged Higgs models + more B →K (*) ℓ + ℓ ‒ B →K (*) νν 19/25P. Pakhlov International conference on particle physics and astrophysics

Lepton Flavor Violation is highly suppressed in the SM (e.g. Br(τ→μ  ) ~ 10 ‒40 ): LFV τ decays are clean and ambiguous probes for New Physics effects Belle II : Sensitivity for LFV decay rates is over 100 times higher than Belle for the cleanest channels (τ→3l) and over 10 times higher for other modes, such as τ→lγ (due to irreducible background contributions) Extrapolations for Belle II (50 ab −1 ) LFV τ decays 20/25P. Pakhlov International conference on particle physics and astrophysics

Much more to be done at Belle II + charm spectroscopy, rare D decays, ϒ(5S) physics, quarkonium(+like) Super B factory and LHCb are complementary to each other 21/25P. Pakhlov International conference on particle physics and astrophysics

Belle II vs Belle KEKB: The energy asymmetry 8 GeV (e – )  3.5 GeV (e + ) (βγ=0.425) sin(2β) the main goal of the experiment : measurement of Δt of two B mesons with high precision SuperKEKB: The energy asymmetry 7 GeV (e – )  4 GeV (e + ) (βγ= 0.28) modes with neutrino in the final state ( e.g. B→τν): better hemeticity Belle II: A smaller beam pipe radius (1.5 cm to 1.0 cm) allows for the innermost silicon detector layer to be positioned closer to the IP (2.0 cm to 1.3 cm) significantly improve the resolution in the z direction Significantly increased outer radius of the SVD (from 8.8 to 14.0 cm) more K 0 S for the time-dependent using K 0 S vertexing Higher reconstruction efficiency of D * slow pions and better flavor tagging PID improvements improve K/π separation, flavor tagging, rare charmless decays or b→ sγ efficiencies, background rejection Improvements to the KLM higher hadronic veto efficiencies used in missing energy analyses (B→τν) 22/25P. Pakhlov International conference on particle physics and astrophysics

SuperKEKB will start circulating beams in phases in commissioning  operation Phase 1: Without Belle II detector Phase 2: Belle II is rolled in, but without vertex detector Phase 3: Full Belle II operation Physics data taking will start in 2018 Schedule & expectations 23/25P. Pakhlov International conference on particle physics and astrophysics

Summary Physics beyond the Standard Model has successfully avoided detection up to now. But we are sure it is somewhere nearby. Up to now the sensitivity to New Physics amplitude was ~10% of those from the SM; in 5-10 years it will be improved by an order of magnitude. 50ab -1 ΔS=0.23 B 0 →J/ψK 0 B 0 →  K 0 Rich physics program for Belle II Belle II will start data taking in 2018 Belle II goal of 50/ab will provide great sensitivity and complimentary to LHCb information in many areas of flavor, CP and related fields We hope to observe something like THIS in 5-7 years 24/25P. Pakhlov International conference on particle physics and astrophysics

T H A N K Y O U ! Where is New Physics? It must be somewhere nearby.