Public Page
Giovanni Punzi
Manfred Paulini
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CDF B Physics Group Public Page |
B Physics Conveners: Giovanni Punzi Manfred Paulini |
Run 2 Results |
| 2006-2007 Results Using ~ 1 to 2 fb-1 | Other Preliminary Results | Published results |
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| Older Preliminary Results | Lifetime | Decay | Spectroscopy | Production |
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NEW (Preliminary) |
Result | (pb-1) | Paper/Note |
|---|---|---|---|
| Measurement of Bc± Lifetime in Semileptonic Decays |
cτ(Bc) = 142.5 +15.8-14.8(stat.) ± 5.5 (syst.) μm |
1000 |
Public
Note 08-03-27 |
| Search for the Rare Decay D0 &rarr &mu+ &mu- |
BR(D0 &rarr &mu+ &mu-) < 5.3*10-7 (95%CL) |
360 |
Public
Note 08-02-28 |
| Measurement of
the Bs Lifetime in hadronic Bs0 → Ds- (φ π-)π+ Decays |
cτ(Bs) = 455.0 ± 12.2 (stat.) ± 7.4 (syst.) μm | 1300 |
Public
Note 08-02-07 |
| First
Flavor-Tagged Determination of Bounds on CP Violation in Bs &rarr J/&psi &phi Decays |
Feldman-Cousins confidence region in 2&betas-&Delta&Gamma plane | 1300 |
arXiv:0712.2397 07-12-14 |
| Lifetime difference and CP violating phase in Bs &rarr J/&psi &phi decays |
&Delta&Gamma = 0.076+0.059-0.063(stat.) ± 0.006 (syst.) ps-1 Results with CP phase floating |
1700 |
arXiv:0712.2348 07-08-09 Prev. result (260 pb-1) PRL 94, 101803 2005 |
|
ACP and BR of &Lambdab Charmless 2-Body Decays |
ACP(&Lambdab&rarr p&pi)=0.03± 0.17± 0.05, ACP(&Lambdab&rarr pK)=0.37 ± 0.17 ± 0.03 Derived: BR(&Lambdab&rarr p&pi)=(3.1± 0.6± 0.7)x10-6 (PDG) BR(&Lambdab&rarr pK)=(5.0± 0.7± 1.0)x10-6 |
1100 |
Public Note 07-10-18 |
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Measurements of Branching Fractions and CP Asymmetries in
B- &rarr D0CPK- Decays |
R = 0.0745 ± 0.0043 (stat) ± 0.0045 (sys) RCP+ = 1.57 ± 0.24 (stat) ± 0.12 (sys) ACP+ = 0.37 ± 0.14 (stat) ± 0.04 (sys) |
1100 |
Public Note 07-10-18 |
| Measurement of &psi(2S) Production Cross Section |
&sigma inc.(pp &rarr &psi(2S)X,|y(&psi(2S))| < 0.6, pT > 2 GeV/c)1.96 · Br(&psi(2S) &rarr &mu&mu) = 3.14 ± 0.04(stat)+0.23-0.22(syst) nb |
1100 |
Public Note 07-10-18 |
| Evidence of Charm Mixing |
Rd=3.04± 0.55 (10-3) Y'=8.5 ± 7.6 (10-3) X'2=-0.12 ± 0.35 (10-3) |
1500 |
arXiv:0712.1567 07-10-18 |
| Angular Analysis of B0 &rarr J/&psi K*0 Decays |
|A0|2 = 0.569 +/- 0.009 (stat) +/- 0.009 (syst) |A|||2 = 0.211 +/- 0.012 (stat) +/- 0.006 (syst) δ|| = -2.97 +/- 0.08 (stat) +/- 0.03 (syst) δ⊥ = 2.97 +/- 0.06 (stat) +/- 0.01 (syst) |
1700 |
Public Note 07-08-30 Prev. result (260 pb-1) PRL 94, 101803 2005 |
| CP Asymmetry in semileptonic B decays |
ASL=0.0080 ±0.0090 ± 0.0068 ASSL=0.020 ±0.021 ± 0.018 |
1600 |
Note 9015 07-08-16 |
| Search for FCNC Rare Decay: Bs,d &rarr &mu+ &mu- |
BR(Bs &rarr &mu+ &mu-) < 5.8*10-8 95%CL BR(Bd &rarr &mu+ &mu-) < 1.8*10-8 95%CL |
2000 |
PRL 100,101802 (2008) 07-08-09 Prev. Results: Note 8176 (780 pb-1) PRL 95, 221805 2005 PRL 93, 032001 2004 |
| Mass and width measurement of orbitally excited (L=1) B**0 mesons |
Γ(B2*0) = 22.1+3.6-3.1 (stat.)
+3.5-2.6 (syst.) MeV/c2 m(B2*0) = 5739.9+1.7-1.8 (stat.) +0.5-0.6 (syst.) MeV/c2 |
1700 |
Note 8945 07-07-26 First observation (370/pb) Note 7938 |
| Observation of the exclusive decay Bc to J/&psi &pi and mass measurement |
mBc = 6274.1 ± 3.2 ± 2.6MeV | 2200 |
arXiv:0712.1506 07-07-12 Prev Prelim. Result (1/fb) Note 8004 06-05-25 Prev. result (360/pb) PRL 96, 082002 2006 |
| Observation and mass measurement of the Ξb baryon |
M(Ξb)=5,792.9 ± 2.5 (stat.) ± 1.7 (syst.) MeV/c2 | 1900 |
arXiv:0707.0589 06/15/2007 |
| First observation and measurement of Bs → D s K branching fraction | Br(Bs0
→Ds±K+) /
Br(Bs0
→Ds+π−)
= 0.107 ± 0.019(stat) ± 0.008(sys) |
1200 |
Note 8850 07-05-24 |
| Measurement of the correlated bb production in pp collision at 1960 GeV |
&sigmab→μ,b→ μ
( pT b > 2GeV,|y|b<1.3; pTμ>3GeV, |η|μ<0.7) = 1549 ± 133 pb |
742 |
Note 8733 07-05-24 |
| Measurement of Exclusive B Lifetime in the modes B + → J/&psi K+, B0 → J/&psi K*0, B0 → J/&psi K0s, B0s → J/&psi &phi and /\b → J/&psi /\, and lifetime ratios | &tau(B+) = 1.630 ± 0.016(stat.) ± 0.011 (syst.) ps &tau(B0) = 1.551 ± 0.019(stat.) ± 0.011 (syst.) ps &tau(B0s) = 1.494 ± 0.054(stat.) ± 0.009 (syst.) ps &tau(/\b) = 1.580 ± 0.077 (stat.) ± 0.012 (syst.) ps &tau(B+)/&tau(B0) = 1.051 ± 0.023 ± 0.004 (syst.) &tau(B0s)/&tau(B0) = 0.963 ± 0.047 ± 0.005 (syst.) &tau(/\b)/&tau(B0) = 1.018 ± 0.062 ± 0.007 (syst.) |
1000 |
Note 8524 06-11-30 Prev. Result: hep-ex/0609021 |
| Search for the rare decays B+ &rarr &mu+&mu&minusK+, B0 &rarr &mu+&mu&minusK*0, and Bs &rarr &mu+&mu&minus&phi |
B(B+ &rarr &mu+&mu&minusK+) =
(0.60 ± 0.15 ± 0.04)×10-6 B(B0 &rarr &mu+&mu&minusK*0) = (0.82 ± 0.31 ± 0.10)×10-6 B(Bs &rarr &mu+&mu&minus&phi)/ B(Bs &rarr J/ψ&phi) < 2.61(2.30)×10-3 at 95(90)%CL. |
924 |
Note 8543 06-11-30 |
| Measurement of branching fractions and direct CP-asymmetries of B0(s)->h+h- decays | observation: B0s→K-π+, Λ0b→pπ- and Λ0b→pK- ACP(B0s→K-π+) = 0.39 ± 0.15 ± 0.08 ACP(B0→K+π-) = -0.086 ± 0.023 ± 0.009 B0(s)->h+h- decays: BF and limits |
1000 |
Note 8579 06-09-21 (rev. 08-04-10) Prev. Result: PRL 97, 211802 2006 |
| Observation of New Heavy Baryon Σband Σb* |
m(Σb+)
= 5808+2.0-2.3 ±
1.7 MeV/c2
m(Σb*+) = 5829+1.6-1.8 ± 1.7 MeV/c2 m(Σb*¯) = 5837+2.1-1.9 ± 1.7 MeV/c2 |
1100 | PRL 99, 202001 (2007) 06-09-21 |
| Measurement of Charm Meson pair Cross Sections | Plots of Charm Cross Sections | 1000 | Note 8621 06-09-21 |
| Observation of orbitally excited (L=1) Bs** mesons |
Q1 = 10.73 ± 0.21 ± 0.14 MeV/c2 Q2 = 66.96 ± 0.39 ± 0.14 MeV/c2 m(Bs1) = 5829.41 ± 0.21 ± 0.14 ± 0.6 (PDG) MeV/c2 m(Bs2*) = 5839 ± 0.39 ± 0.14 ± 0.5 (PDG) MeV/c2 |
1000 | arXiv:0710.4199 06-07-20 |
| Relative cross sections of χc1 and χc2 | σ(χc2)/σ(χc1) = 0.70 ± 0.04 ± 0.04 ± 0.06 (B.F.), for prompt production σ(χc2)/σ(χc1) = 0.25 ± 0.07± 0.01± 0.02 (B.F.), for B decay |
1100 | hep-ex/0703028 06-06-15 |
| Search for &etab decay into J/&psi J/&psi | &sigma(pp&rarr &etab, |y|<0.6, pT 3GeV) * BR < 2.6pb | 1000 | Note 8448 06-06-15 |
| Measurement of B0 Oscillations and Calibration of Flavor Tagging in Semileptonic Decays |
&Delta md = 0.509 ± 0.010 ± 0.016ps-1 &epsilon D2 = 1.54 ± 0.05 |
1000 | Note 8235 06-04-06 |
| Measurement of b production cross section using Hb →
μD0(*)channels (Hb is an admixture of b hadrons) |
&sigma(pp→Hb) × BR(Hb→&mu- D0 X) × BR(D0→&pi+K- ) = 3.53 nb ± 0.20 nb (stat.) +0.34 -0.36 (syst.) nb &sigma(pp→Hb) × BR(Hb→&mu- D*+ X) × BR(D*+→D0&pi+ )× BR(D0→&pi+K- ) = 1.04 nb ± 0.13 nb (stat.) +0.12 -0.14 (syst.) nb |
83 |
06-10-25 |
| Measurement of the branching ratio of D+ &rarr &pi&minus&pi+&pi+ | B(D+ &rarr &pi&minus&pi+&pi+)/
B(D+ &rarr K&minus&pi+&pi+) = (3.461 ± 0.038 ± 0.040 )% B(D+ &rarr &pi&minus&pi+&pi+) = (3.29± 0.11)10&minus 3 |
193 |
Note 8499 06-08-31 |
| B to Vector Vector Polarization in Bd --> JPsi K* and Bd --> PhiK* | Table of Polarization Amplitudes | 360 | Note 8501 06-07-20 |
B Hadron Lifetimes (Preliminary) |
Result | pb-1 | Paper/Note |
|---|---|---|---|
|
Bs meson lifetime and &Delta &Gamma (excl. reconstruction in Bs &rarr K+K - decays) |
&tauBs&rarr K+K - = 1.53 ± 0.18 ± 0.02 ps ΔΓCP/ΓCP(Bs→ K+K-) = -0.08 ± 0.23 ± 0.03 |
360 |
Note 06-01-26 |
| B0s meson lifetime (part. reconstruction in semileptonic decays) |
&tauB0s= 1.381 ± 0.055 +0.052-0.046ps &tauB0s/&tauB0 = 0.938 ± 0.044 +0.049-0.046 |
360 |
Note 7757 05-07-07 |
| B+, B0 and Bs meson lifetimes (excl. reconstruction in hadronic decays) |
&tauB+= 1.66 ± 0.03 ± 0.01ps &tauB0= 1.51 ± 0.02 ± 0.01ps &tauBs= 1.60 ± 0.10 ± 0.02ps &tauB+/&tauB0 = 1.10 ± 0.02 ± 0.01 &tauBs/&tauB0 = 1.06 ± 0.07 ± 0.01 |
360 |
Note 05-03-03 |
| B+ and B0 meson lifetimes (part. reconstruction in semileptonic decays) |
&tauB+= 1.653 ± 0.029 +0.033-0.031ps &tauB0= 1.473 ± 0.036 ± 0.054ps &tauB+/&tauB0 = 1.123 ± 0.040 +0.041-0.039 |
260 |
Note 05-02-24 |
B,C Hadron Decays (Preliminary) |
Result | Dataset (pb-1) | Paper/Note |
|---|---|---|---|
| Observation of exclusive decay Bs &rarr Ds Ds | R(Bs → DsDs ) / BR(B0 → DsD+ ) = 1.67 ± 0.41 ± 0.12 ± 0.24 (fs/fd) ± 0.39(BR) | 355 |
Note 7925 06-03-16 |
| Ratio of Branching Fractions BR(B0 &rarr DsD+) / BR(B0 &rarr D+3&pi-) and BR(B0 &rarr Ds(*)D+(*)) / BR(B0 &rarr D+3&pi-) |
BR(B0 &rarr DsD+) / BR(B0 &rarr D+3&pi) = 1.99 ± 0.13 ± 0.11 ± 0.44(BR Ds &rarr &phi&pi) ± 0.08(other BR) |
355 |
Note 7925 06-01-15 |
| Measurement of the Ratio of Brancing Fractions R=BR(B-->D0K-)/BR(B-->D0π-) | R = 0.065 ± 0.007 (stat) ± 0.004 (sys) | 360 |
Note 8242 06-04-20 |
| Ratio of Branching Fractions BR(B+ &rarr J/psi&pi+) / BR(B+ &rarr J/psi K+) |
BR(B+ &rarr J/psi&pi+) / BR(B+ &rarr J/psi K+) = 4.86 ± 0.82 ± 0.15 |
210 |
Note 8237 05-10-13 |
|
Ratio of Branching Fractions:
BR(&Lambdab &rarr &Lambdac+&mu-&nu) /BR(&Lambdab&rarr &Lambdac+&pi-) |
BR(&Lambdab &rarr &Lambdac&mu- &nu)
/ BR(&Lambdab &rarr &Lambdac&pi-)
= 20.0 ± 3.0 ± 1.2 +0.7-2.1(BR) ± 0.5(UBR) BR(B0 &rarr D*-&mu+ &nu) / BR(B0 &rarr D*-&pi+) = 17.7 ± 2.3 ± 0.6 ± 0.4(BR) ± 1.1(UBR) BR(B0 &rarr D-&mu+ &nu) / BR(B0 &rarr D-&pi+) = 9.8 ± 1.0 ± 0.6 ± 0.8(BR) ± 0.9(UBR) |
172 |
Note 7635 05-04-07 |
Spectroscopy and Decay Properties (Preliminary) |
Result | Dataset (pb-1) | Paper/Note |
|---|---|---|---|
| Study of the Lifetime Distribution of the X(3872) |
Fbdecay = 16.9 ± 4.9 ± 2.0% | 220 |
Note 7159 04-06-24 |
B, D, Quarkonium, and Pentaquark Production (Preliminary) |
Result | Dataset (pb-1) | Paper/Note |
|---|---|---|---|
| Relative B Hadron Fragmentation Fractions | fu/fd = 1.054 ± 0.018 +0.025-0.045(sys) ± 0.082 (BR) fs/(fu+fd) = 0.160 ± 0.005 +0.011-0.010(sys) +0.057-0.034 (BR) f/\b/(fu+fd) = 0.281 ± 0.012 +0.058-0.056(sys) +0.127-0.086 (BR) |
360 |
Note 8140 06-02-16 |
| Charged Particle Production in Association with B0,B+,Bs0 Mesons | Fraction of associated K for Bs0: 20.2 ± 1.2 ± 0.3 % | 355 |
Note 8137 05-10-13 |
| &sigmaBc*BR(Bc &rarr J/ψ &mu X) |
&sigmaBc(pt>6.0GeV)*BR(Bc &rarr J/ψ &mu X) / &sigmaB+*BR(B+ &rarr J/ψK) = 0.249 ± 0.045 ± 0.069 +0.0082-0.033(sys-life) |
360 |
Note 7649 05-04-14 |
| &sigmaBc*BR(Bc &rarr J/ψ e X) |
&sigmaBc(pt>4.0GeV)*BR(Bc &rarr J/ψ e X) / &sigmaB+*BR(B+ &rarr J/ψK) = 0.282 ± 0.038 ± 0.065 ± 0.035(sys-yield) &sigmaBc(pt>6.0GeV)*BR(Bc &rarr J/ψ e X) / &sigmaB+*BR(B+ &rarr J/ψK) = 0.242 ± 0.036 ± 0.051 ± 0.031(sys-yield) |
360 |
Note 7926 05-04-07 |
| Pentaquark search in the channel J/&psi p |
Results |
280 |
Note 04-08-19 |
| Pentaquark search in the channel &Thetac &rarr Dxp |
Results |
240 |
Note 04-04-28 |
| Pentaquark search in the channel &Theta+ &rarr p K0s |
Results |
180 |
Note 04-04-28 |
PR Results |
Result | pb-1 | Date |
|---|---|---|---|
| X &rarr J/&psi pi pi: J/&psi &rarr e+e- | Results |
360 |
05-06-09 |
| Di Muon Trigger Signals |
Mass Plot |
360 |
04-09-30 |
| J/&psi &rarr &mu &mu Signals |
Mass and Lifetime |
293 |
04-08-05 |
| Combined Opposite Side Tagger |
&epsilon D2 = 1.8% | - | Note 8460 06-06-29 |
| Same Side Kaon Tagger |
&epsilon D2 = 4.0 + 0.9 - 1.2% | - | Note 8206 06-03-02 |
| Opposite Side Kaon Tagger |
&epsilon D2 = 0.229 ± 0.016 ± 0.001% | 355 |
Note 8241 06-04-13 |
| Neural Network based Jet Charge Tagger in Semileptonic(e,mu) Samples |
&epsilon D2 = 0.917 ± 0.031%(electron) &epsilon D2 = 0.938 ± 0.029%(muon) |
355 |
Note 05-03-03 |
| Improved Jet Charge Tagging in the Semileptonic Sample |
&epsilon D2 = 0.715 ± 0.027% |
290 |
Note 04-08-12 |
| Likelihood Based Soft Electron Tagging |
&epsilon D2 = 0.366 ± 0.031 +0.065-0.056% |
|
Note 04-08-12 |
| Likelihood Based Soft Muon Tagging |
&epsilon D2 = 0.698 ± 0.042 +0.051-0.027% |
|
Note 04-07-22 |
| Sample Composition of Semileptonic B Events |
60 | 03-06-26 |
| Measurement | Result | Dataset (pb-1) | Paper/Note |
|---|---|---|---|
| Bottom quark pair azimuthal correlations in J/psi+lepton sample | Results | 90 | PRD 71, 092001 2005 04-09-30 |
| Bottom quark pair azimuthal correlations using displaced secondary vertex information | Results | 90 | PRD 71, 092001 2005 03-02-20 |
Papers & Notes |
