Only 20’ (used to be 30’): agendaagenda 12 June 2013 LHCC - Status LHCb Niels Tuning () PreviousPrevious LHCC: 13 Mar 2013 (T.Blake)13 Mar 2013 5 Dec 2012 (N. Serra)5 Dec 2012
LHCC Open Session – Status LHCb Niels Tuning On behalf of the LHCb collaboration 12 June 2013 LHCC - Status LHCb Niels Tuning ()
1)LHCb detector in LS1 2)Selection of recent physics results 3)LHCb upgrade Outline Previous LHCC 13/14 Mar /14 Mar June 2013 LHCC - Status LHCb Niels Tuning ()
The LHCb Detector 12 June 2013 LHCC - Status LHCb Niels Tuning ()
The LHCb Detector 12 June 2013 LHCC - Status LHCb Niels Tuning ()
23 sep :49:24 Run Event The LHCb Detector 12 June 2013 LHCC - Status LHCb Niels Tuning ()
The LHCb Detector Forward arm spectrometer 2<η<5 σ(ppX) inel ≈ 60 mb σ(ppcc) incl ≈ 6 mb σ(ppbb) incl ≈ 0.3 mb 12 June 2013 LHCC - Status LHCb Niels Tuning ()
The LHCb Detector Tracking: dp/p ~ % Excellent mass resolution Production of J/psi and Upsilon mesons in pp collisions at sqrt(s) = 8 TeV arXiv: June 2013 LHCC - Status LHCb Niels Tuning () Y(1S,2S,3S)→μ + μ -
The LHCb Detector PID: ε(K→K)~95%, ε( →K)~5%, Excellent PID performance Observation of the suppressed ADS modes B ± → [π ± K ∓ π + π − ]DK ± and B ± → [π ± K ∓ π + π − ]Dπ ± arXiv: June 2013 LHCC - Status LHCb Niels Tuning () B-→D0K-B-→D0K- B-→D0-B-→D0-
The LHCb Detector CALO: E /E ~ 10%/E 1% (ECAL) E /E ~ 70%/E 10% (HCAL) Excellent L0 trigger First measurement of the CP-violating phase in B 0 s → ϕϕ decays arXiv: June 2013 LHCC - Status LHCb Niels Tuning () B s 0 →
The LHCb Detector MUON: ε(μ →μ) ~ 97%, ε( → μ) ~ 1-3% Search for the rare decay D 0 → μ + μ − arXiv: June 2013 LHCC - Status LHCb Niels Tuning () D 0 →( →μ) + ( →μ) -
Major work on power network consolidation –Redundancy at all levels Beampipe dismantled –Special opening procedure with Neon in VELO –3 months of work Online –Redundancy of power and cooling –Replacing hardware (120 disks upgraded) Commissioning week: full DAQ of entire LHCb functioned properly (May 26) Subdetectors: –MUON: Doubling HV channels –OT: Irradiation tests –CALO:Replace fibers of LED system –ST:Cooling consolidation Activities in LS1 12 June 2013 LHCC - Status LHCb Niels Tuning () Control room Beampipe
Papers published in 2013 (arXiv:130x.yyyy) Total: 102 published 11 approved 9 submitted 2013: 49 submitted 12 June 2013 LHCC - Status LHCb Niels Tuning ()
Papers submitted since last LHCC (13 Mar 2013): 1)Observation of B 0 s → χ c1 ϕ decay and study of B 0 → χ c1,2 K ∗ 0 decays arXiv: arXiv: )Search for the rare decay D 0 → μ + μ − arXiv: arXiv: )Differential branching fraction and angular analysis of the decay B 0 s → ϕ μ + μ − arXiv: arXiv: )Measurement of the CKM angle γ from a combination of B → Dh analyses arXiv: arXiv: )Production of J/ψ and Υ mesons in pp collisions at √s = 8 TeV arXiv: arXiv: )Precision measurement of D meson mass differences arXiv: arXiv: )Search for D + (s) → π + μ + μ − and D + (s) → π − μ + μ − decays arXiv: arXiv: )Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − arXiv: arXiv: )Measurement of the branching fractions of the decays B 0 s → D 0 ¯K - π + and B 0 → D 0 ¯K + π- arXiv: arXiv: )First observation of CP violation in the decays of B s mesons arXiv: arXiv: )Precision measurement of the B 0 s - B¯ 0 s oscillation frequency with the decay B 0 s → D − s π + arXiv: arXiv: )Observation of B + c → J/ψD + s and B + c → J/ψD s +* decays arXiv: arXiv: )Searches for violation of lepton flavour and baryon number in tau lepton decays at LHCb arXiv: arXiv: )Measurement of the effective B 0 s → J/ψ K S 0 lifetime arXiv: arXiv: )Measurement of the B 0 → K ∗ 0 e + e − branching fraction at low dilepton mass arXiv: arXiv: )Measurement of CP violation and the B 0 s meson decay width difference with B 0 s → J/ψK + K − and B 0 s → J/ψπ + π − decays arXiv: arXiv: )Limits on neutral Higgs boson production in the forward region in pp collisions at √s =7 TeV arXiv: arXiv: )Measurements of the branching fractions of B + → pp¯K + decays arXiv: arXiv: )First measurement of the CP-violating phase in B 0 s → ϕϕ decaysarXiv: arXiv: )Study of B 0 → D ∗ − π + π − π + and B 0 → D ∗ − K + π − π + decays arXiv: arXiv: )Search for CP violation in D + → ϕ π + and D s + → K s π + decays arXiv: arXiv: )Observation of the suppressed ADS modes B ± → [π ± K ∓ π + π − ]DK ± and B ± → [π ± K ∓ π + π − ]Dπ ± arXiv: arXiv: )Search for direct CP violation in D 0 → h − h + modes using semileptonic B decays arXiv: arXiv: June 2013 LHCC - Status LHCb Niels Tuning ()
charm Precision physics in the charm sector 1)Rare decays 1)Rare decays arXiv: arXiv: BR(D 0 →μ + μ − ) < 7.6x10 -9 Best limit, x20 improvement 2)Masses 2)Masses arXiv: arXiv: M(D 0 )= 0.19 MeV Same precision as previously best CLEO measurement 12 June 2013 LHCC - Status LHCb Niels Tuning () ACCM KEDR CLEO PDG LHCb New avg. 3)CP asymmetries 3)CP asymmetries arXiv: arXiv: A CP (D + → + ) = 0.19 A CP (D s + → K S 0 + ) = 0.84 Most precise measurement No evidence for CP violation
bottom Study large variety of bottom decays BR(B s 0 →χ c1 ) / BR(B s 0 →J/ ) = arXiv: BR(B s 0 →D 0 ¯ K - + ) / BR(B 0 →D 0 ¯ + - ) = 1.18 0.13 arXiv: June 2013 LHCC - Status LHCb Niels Tuning ()
Papers submitted since last LHCC (13 Mar 2013): 1)Observation of B 0 s → χ c1 ϕ decay and study of B 0 → χ c1,2 K ∗ 0 decays arXiv: arXiv: )Search for the rare decay D 0 → μ + μ − arXiv: arXiv: )Differential branching fraction and angular analysis of the decay B 0 s → ϕ μ + μ − arXiv: arXiv: )Measurement of the CKM angle γ from a combination of B → Dh analyses 4)Measurement of the CKM angle γ from a combination of B → Dh analyses arXiv: arXiv: )Production of J/ψ and Υ mesons in pp collisions at √s = 8 TeV arXiv: arXiv: )Precision measurement of D meson mass differences arXiv: arXiv: )Search for D + (s) → π + μ + μ − and D + (s) → π − μ + μ + decays arXiv: arXiv: )Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − 8)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − arXiv: arXiv: )Measurement of the branching fractions of the decays B 0 s → D 0 ¯K - π + and B 0 → D 0 ¯K + π- arXiv: arXiv: )First observation of CP violation in the decays of B s mesons 10)First observation of CP violation in the decays of B s mesons arXiv: arXiv: )Precision measurement of the B 0 s - B¯ 0 s oscillation frequency with the decay B 0 s → D − s π + 11)Precision measurement of the B 0 s - B¯ 0 s oscillation frequency with the decay B 0 s → D − s π + arXiv: arXiv: )Observation of B + c → J/ψD + s and B + c → J/ψD s +* decays arXiv: arXiv: )Searches for violation of lepton flavour and baryon number in tau lepton decays at LHCb arXiv: arXiv: )Measurement of the effective B 0 s → J/ψ K S 0 lifetime arXiv: arXiv: )Measurement of the B 0 → K ∗ 0 e + e − branching fraction at low dilepton mass arXiv: arXiv: )Measurement of CP violation and the B 0 s meson decay width difference with B 0 s → J/ψK + K − and B 0 s → J/ψπ + π − decays 16)Measurement of CP violation and the B 0 s meson decay width difference with B 0 s → J/ψK + K − and B 0 s → J/ψπ + π − decaysarXiv: arXiv: )Limits on neutral Higgs boson production in the forward region in pp collisions at √s =7 TeV arXiv: arXiv: )Measurements of the branching fractions of B + → pp¯K + decays arXiv: arXiv: )First measurement of the CP-violating phase in B 0 s → ϕϕ decaysarXiv: arXiv: )Study of B 0 → D ∗ − π + π − π + and B 0 → D ∗ − K + π − π + decays arXiv: arXiv: )Search for CP violation in D + → ϕ π + and D s + → K s π + decays arXiv: arXiv: )Observation of the suppressed ADS modes B ± → [π ± K ∓ π + π − ]DK ± and B ± → [π ± K ∓ π + π − ]Dπ ± arXiv: arXiv: )Search for direct CP violation in D 0 → h − h + modes using semileptonic B decays arXiv: arXiv: June 2013 LHCC - Status LHCb Niels Tuning ()
This is what LHCb was built for! 1)Measurement of the CKM angle γ from a combination of B → Dh analyses 1)Measurement of the CKM angle γ from a combination of B → Dh analyses arXiv: arXiv: )Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − 2)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − arXiv: arXiv: )First observation of CP violation in the decays of B s mesons 3)First observation of CP violation in the decays of B s mesons arXiv: arXiv: )Precision measurement of the B 0 s - B¯ 0 s oscillation frequency with the decay B 0 s → D − s π + 4)Precision measurement of the B 0 s - B¯ 0 s oscillation frequency with the decay B 0 s → D − s π + arXiv: arXiv: )Measurement of CP violation and the B 0 s meson decay width difference with B 0 s → J/ψK + K − and B 0 s → J/ψπ + π − decays 5)Measurement of CP violation and the B 0 s meson decay width difference with B 0 s → J/ψK + K − and B 0 s → J/ψπ + π − decays arXiv: arXiv: Unitarity angle: Forward backward asymmetry: A FB Direct CP violation in the B s 0 system B s 0 oscillations: m s Time dependent CP violation in B s 0 s Shown last LHCC,last and now published 12 June 2013 LHCC - Status LHCb Niels Tuning ()
Least known angle in unitarity triangle: Determination of 1)Measurement of the CKM angle γ from a combination of B → Dh analyses 1)Measurement of the CKM angle γ from a combination of B → Dh analyses arXiv: arXiv: June 2013 LHCC - Status LHCb Niels Tuning () Related, recent, studies: Observation of the suppressed ADS modes B ± → [π ± K ∓ π + π − ]DK ± and B ± → [π ± K ∓ π + π − ]Dπ ± arXiv: arXiv: Improved constraints on γ from B ± → DK ± decays including first results on 2012 data LHCb-CONF LHCb-CONF Model-independent measurement of CP violation parameters in B ± → (K 0 S h + h − ) D K ± decays LHCb-CONF LHCb-CONF
B ± → DK ±Relative weak phase of two amplitudes in B ± → DK ± decays: Determination of 1)Measurement of the CKM angle γ from a combination of B → Dh analyses 1)Measurement of the CKM angle γ from a combination of B → Dh analyses arXiv: arXiv: June 2013 LHCC - Status LHCb Niels Tuning () + V ub * V cb * B-B-B-B- + V ub V cb B+B+B+B+ -- A tot ++ Complex plane:
Determination of 1)Measurement of the CKM angle γ from a combination of B → Dh analyses 1)Measurement of the CKM angle γ from a combination of B → Dh analyses arXiv: arXiv: Model-independent measurement of CP violation parameters in B ± → (K 0 S h + h − ) D K ± decays LHCb-CONF LHCb-CONF June 2013 LHCC - Status LHCb Niels Tuning () (K S 0 decaying after VELO) B ± → DK ±Relative weak phase of two amplitudes in B ± → DK ± decays: B - → D(K S 0 + - )K - B + → D(K S 0 + - )K +Compare B - → D(K S 0 + - )K - with B + → D(K S 0 + - )K +
Determination of 1)Measurement of the CKM angle γ from a combination of B → Dh analyses 1)Measurement of the CKM angle γ from a combination of B → Dh analyses arXiv: arXiv: Model-independent measurement of CP violation parameters in B ± → (K 0 S h + h − ) D K ± decays LHCb-CONF LHCb-CONF June 2013 LHCC - Status LHCb Niels Tuning () B ± → DK ±Relative weak phase of two amplitudes in B ± → DK ± decays: B - → D(K S 0 + - )K - B + → D(K S 0 + - )K +Compare B - → D(K S 0 + - )K - with B + → D(K S 0 + - )K + Best when done separately in regions of (K S 0 + - ) Dalitz plane: B-B-B-B- B+B+B+B+
Determination of 1)Measurement of the CKM angle γ from a combination of B → Dh analyses 1)Measurement of the CKM angle γ from a combination of B → Dh analyses arXiv: arXiv: Improved constraints on γ from B ± → DK ± decays including first results on 2012 data LHCb-CONF LHCb-CONF June 2013 LHCC - Status LHCb Niels Tuning () B ± → DK ±Relative weak phase of two amplitudes in B ± → DK ± decays: Combine 4 measurements (with CLEO input) to determine –B ± → D(K S 0 + - )K ± (2012, “GGSZ”) –B ± → D(K S 0 + - )K ± (2012, “GGSZ”) LHCb-CONF LHCb-CONF –B ± → D(K S 0 + - )K ± (2011, “GGSZ”) –B ± → D(K S 0 + - )K ± (2011, “GGSZ”) LHCb, PL B718 (2012) 43PL B718 (2012) 43 –B ± → D(h + h - )K ± (2011, “ADS”+”GLW”) –B ± → D(h + h - )K ± (2011, “ADS”+”GLW”) LHCb, PL B712 (2012) 203PL B712 (2012) 203 –B ± → D( + K - + - )K ± (2011, “ADS”) –B ± → D( + K - + - )K ± (2011, “ADS”) LHCb, PL B723 (2013) 44PL B723 (2013) 44 Comparison 1 Belle BaBar CKM fitter66 12 UTFit70.8 7.8
Many EW penguin decays studied: –Differential branching fraction and angular analysis of the decay B 0 s → ϕ μ + μ − arXiv: arXiv: –Search for D + (s) → π + μ + μ − and D + (s) → π − μ + μ + decays arXiv: arXiv: –Measurement of the B 0 → K ∗ 0 e + e − branching fraction at low dilepton mass arXiv: arXiv: B 0 → K ∗ 0 μ + μ − and friends) Electroweak penguins (B 0 → K ∗ 0 μ + μ − and friends) 2)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − 2)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − arXiv: arXiv: b/c s/u l l d/s 12 June 2013 LHCC - Status LHCb Niels Tuning () Very rich “laboratory” ! Many decays & observables New particles affect couplings
Angular analysis: agreement with SM: Electroweak penguins: B 0 s → ϕ μ + μ − Differential branching fraction and angular analysis of the decay B 0 s → ϕ μ + μ − arXiv: arXiv: b s μ μ s 12 June 2013 LHCC - Status LHCb Niels Tuning ()
1)D + → π + μ + μ − : FCNC 2)D s + → π + μ + μ − : Weak annihilation 3)D (s) + → π - μ + μ + : Lepton number violation Best limits –previous: ~ Consistent with background-only: Electroweak penguins: D + (s) → π + μ + μ − Search for D + (s) → π + μ + μ − and D + (s) → π − μ + μ + decays arXiv: arXiv: June 2013 LHCC - Status LHCb Niels Tuning () c u μ μ d
Predominantly sensitive to C 7 Electroweak penguins: B 0 → K ∗ 0 e + e − Measurement of the B 0 → K ∗ 0 e + e − branching fraction at low dilepton mass arXiv: arXiv: e 12 June 2013 LHCC - Status LHCb Niels Tuning () b s e e d
B 0 → K ∗ 0 μ + μ − Electroweak penguins: B 0 → K ∗ 0 μ + μ − 2)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − 2)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − arXiv: arXiv: June 2013 LHCC - Status LHCb Niels Tuning () b s μ μ d Accurate measurement of d/dq 2 In agreement with SM
B 0 → K ∗ 0 μ + μ − Electroweak penguins: B 0 → K ∗ 0 μ + μ − 2)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − 2)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − arXiv: arXiv: June 2013 LHCC - Status LHCb Niels Tuning () b s μ μ d In agreement with SM, q 0 2 =4.90.9 GeV 2 (SM: 3.9 – 4.3 GeV 2 ) More angular observables in the pipeline! Stay tuned. q02q02
B 0 → K ∗ 0 μ + μ − Electroweak penguins: B 0 → K ∗ 0 μ + μ − 2)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − 2)Differential branching fraction and angular analysis of the decay B 0 → K ∗ 0 μ + μ − arXiv: arXiv: June 2013 LHCC - Status LHCb Niels Tuning () b s μ μ d In agreement with SM, q 0 2 =4.90.9 GeV 2 (SM: 3.9 – 4.3 GeV 2 ) In agreement with B-factories, CDF, ATLAS and CMS
More B s 0 →K + - compared to B s 0 →K - + First measurement of CP violation in B s 0 system 3)First observation of CP violation in the decays of B s mesons 3)First observation of CP violation in the decays of B s mesons arXiv: arXiv: June 2013 LHCC - Status LHCb Niels Tuning ()
LHCb: “forward GPD” 12 June 2013 LHCC - Status LHCb Niels Tuning () Measurement of the cross-section for Z → μμ production with 1 fb −1 of pp collisions at √s=7 TeV LHCb-CONF LHCb-CONF Graphical comparison of the LHCb measurements of W and Z boson production with ATLAS and CMS LHCb-CONF LHCb-CONF Z→μμ 1 fb -1 Test the SM Constrain the pdf’s Scrutinize lepton universality
LHCb: “forward GPD” 12 June 2013 LHCC - Status LHCb Niels Tuning () Test the SM Constrain the pdf’s Scrutinize lepton universality LHCb becomes “Forward GPD” Z→μμ 1 fb -1 W →μν fb -1 Measurement of the cross-section for Z → μμ production with 1 fb −1 of pp collisions at √s=7 TeV LHCb-CONF LHCb-CONF Graphical comparison of the LHCb measurements of W and Z boson production with ATLAS and CMS LHCb-CONF LHCb-CONF
LHCb upgrade Need more luminosity (most analyses statistics limited!) o Higher lumi higher rate higher E T threshold loss of events Better trigger needed o Higher lumi higher occupancy loss of tracks New Tracker needed 12 June 2013 LHCC - Status LHCb Niels Tuning ()
LHCb upgrade Currently: 3 fb : 4-5 fb -1 Upgrade (LS2):50 fb June 2013 LHCC - Status LHCb Niels Tuning () Framework TDR CERN-LHCC Letter of Intent for LHCb upgrade CERN-LHCC
LHCb upgrade 12 June 2013 LHCC - Status LHCb Niels Tuning () 1)VELO 1)VELO: decision pixel or strip option this month 2)RICH 2)RICH: decision on new opt. system or Trident this month Tracker 3) Tracker: decision on Scint. Fibers at end of this year
Conclusions 12 June 2013 LHCC - Status LHCb Niels Tuning ()
Backup 12 June 2013 LHCC - Status LHCb Niels Tuning ()
B 0 → K ∗ 0 μ + μ −B 0 → K ∗ 0 μ + μ − Angular observables 12 June 2013 LHCC - Status LHCb Niels Tuning ()
CONF Notes in )Study of the J/ψ production cross-section in proton-lead collisions at √s NN =5 TeV LHCb-CONF LHCb-CONF )Measurement of the cross-section for Z → μμ production with 1 fb −1 of pp collisions at √s=7 TeV LHCb-CONF LHCb-CONF )Improved constraints on γ from B ± → DK ± decays including first results on 2012 data LHCb-CONF LHCb-CONF )Graphical comparison of the LHCb measurements of W and Z boson production with ATLAS and CMS LHCb-CONF )Model-independent measurement of CP violation parameters in B ± → (K 0 S h + h − ) D K ± decays LHCb-CONF LHCb-CONF )A search for time-integrated CP violation in D 0 → K − K + and D 0 → π − π + decays LHCb-CONF LHCb-CONF )Measurement of σ(bbˉ) with inclusive final states LHCb-CONF LHCb-CONF )Measurement of the forward-central bbˉ production asymmetry LHCb-CONF LHCb-CONF June 2013 LHCC - Status LHCb Niels Tuning ()