Public Page
Robert Harr
Jonathan Lewis
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CDF B Physics Group Public Page |
B Physics Conveners: Robert Harr Jonathan Lewis |
Run 2 Results |
| New Results | Older Preliminary Results | Published results |
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| Mixing and CP Violation | Lifetime | Decay | Spectroscopy | Production |
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Please note that some results appear in several sections.
NEW |
Result | (pb-1) | Paper/Note |
|---|---|---|---|
| Observation of D0 Mixing Using the CDF II Detector |
RD = (3.51 ± 0.35) 10-3 y' = (4.3 ± 4.3) 10-3 x'2 = (0.08 ± 0.18) 10-3 |
9600 | Public Note 10990 2013-04-08 |
| CP Violating Asymmetries in Charmless Decays of Strange Bottom Mesons and Bottom Baryons with 9.3 fb-1 |
ACP(B0→K+π-) = -0.083± 0.013 ± 0.003 ACP(Bs0→K-π+) = +0.22± 0.07 ± 0.02 ACP(Λb0→pπ-) = +0.07± 0.07 ± 0.03 ACP(Λb0→pK-) = -0.09± 0.08 ± 0.04 |
9300 | Public Note 10726 2012-06-28 |
| Branching Ratio Measurements of Exclusive b→s μ+μ- Decays and Angular Analysis in B→K(*) μ+μ- Decays | See web page | 9600 | Public
Note 10894 2012-06-28 |
| Evidence for bottom baryon resonance Λb0* | M(Λb0*)= 5919.5±0.35(stat)±1.72(sys) MeV/c2 | 9600 |
Public Note 10900 2012-07-23 |
| Measurement of BR(Bs→J/ψφ) and extraction of the fragmentation fractions | fs/fd * BR(Bs→J/ψφ): (3.17 ± 0.04 (stat.) ± 0.26 (sys) ± 0.14 (pdg) ) × 10- 4 | 9600 | Public Note 10795 2012-04-20 |
| Measurement of the difference in CP violating asymmetry between D0→KK and D0→ππ | Δ ACP = (-0.62± 0.21 ± 0.10)% | 9600 | Phys. Rev. Lett. 109, 111801 (2012) 2012-02-16 Previous result: Phys. Rev. D 85, 012009 (2012) |
| Measurement of the CP Violating Phase βsJ/ψφ using the whole Run II sample | βs within [-π/2,-1.51] U [-0.06,0.30] U [1.26,π/2] at the 68% C.L. ΔΓs = 0.068 ± 0.026 (stat)± 0.007 (syst)) ps-1 τs = 1.528 ± 0.019 (stat) ± 0.009 (syst) ps |
9600 |
Phys. Rev. Lett. 109, 171802 (2012) 2012-02-16 Updated 2012-04-19 Prev. results: Phys. Rev. D 85 072002 (2012) (web) PRL 100, 161802 (2008) PRL 100, 121803 (2008) |
| Search for B0(s)→μ+μ- in the whole Run II sample | Br(B0s→μ+μ-) = 1.3+0.9-0.7 ×10-8 Br(B0→μ+μ-) < 4.6 ×10-9 at the 0.95 CL |
9600 |
Public Note in preparation 2012-02-09 Previous result: Phys. Rev. Lett. 107, 191801 (2011) |
| Measurement of the B0s→ D(*)+sD(*)-s branching fractions | Br(B0s→ D+sD-s) = (0.49 ± 0.06 ± 0.05 ± 0.08)% Br(B0s→ D*+sD-s) = (1.13 ± 0.12 ± 0.19 ± 0.09)% Br(B0s→ D*+sD*-s) = (1.75 ± 0.19 ± 0.17 ± 0.29)% Br(B0s→ D(*)+sD(*)-s) = (3.38 ± 0.25 ± 0.30 ± 0.56)% |
6800 |
Phys. Rev. Lett. 108, 201801 (2012) 2012-02-26 Prev. results: Phys. Rev. Lett. 100, 021803 (2008) |
| Fragmentation Study with D±s/D± -- K Correlations | See the webpage for results | 360 | Public Note 10704 2012-02-02 |
| Search for CP Violation in D0 → KSπ+ π- | ACP = -0.0005 ± 0.0057 (stat) ± 0.0054 (syst) and by submodes as listed on the web page |
6000 |
Phys. Rev. D 86, 032007 (2012) 2011-10-13 |
Mixing and CP Violation |
Result | (pb-1) | Paper/Note |
|---|---|---|---|
| Observation of D0 Mixing Using the CDF II Detector |
RD = (3.51 ± 0.35) 10-3 y' = (4.3 ± 4.3) 10-3 x'2 = (0.08 ± 0.18) 10-3 |
9600 | Public Note 10990 2013-04-08 |
| CP Violating Asymmetries in Charmless Decays of Strange Bottom Mesons and Bottom Baryons with 9.3 fb-1 |
ACP(B0→K+π-) = -0.083± 0.013 ± 0.003 ACP(Bs0→K-π+) = +0.22± 0.07 ± 0.02 ACP(Λb0→pπ-) = +0.07± 0.07 ± 0.03 ACP(Λb0→pK-) = -0.09± 0.08 ± 0.04 |
9300 | Public Note 10726 2012-06-28 |
| Measurement of the difference in CP violating asymmetry between D0→KK and D0→ππ | Δ ACP = (-0.62± 0.21 ± 0.10)% | 9600 | Phys. Rev. Lett. 109, 111801 (2012) 2012-02-16 Previous result: Phys. Rev. D 85, 012009 (2012) |
| Measurement of the CP Violating Phase βsJ/ψφ using the whole Run II sample | βs within [-π/2,-1.51] U [-0.06,0.30] U [1.26,π/2] at the 68% C.L. ΔΓs = 0.068 ± 0.026 (stat)± 0.007 (syst)) ps-1 τs = 1.528 ± 0.019 (stat) ± 0.009 (syst) ps |
9600 |
Phys. Rev. Lett. 109, 171802 (2012) 2012-02-16 Updated 2012-04-19 Prev. results: Phys. Rev. D 85 072002 (2012) (web) PRL 100, 161802 (2008) PRL 100, 121803 (2008) |
| Search for CP Violation in D0 → KSπ+ π- | ACP = -0.0005 ± 0.0057 (stat) ± 0.0054 (syst) and by submodes as listed on the web page |
6000 |
Phys. Rev. D 86, 032007 (2012) 2011-10-13 |
| First search for CP violation in B0s→φφ decays | Au = (-0.7 ± 6.4(stat.) ± 1.8(syst.))% Av = (-12.0 ± 6.4(stat.) ± 1.6(syst.))% |
2900 |
Phys. Rev. Lett. 107, 261802 (2011) 2011-04-07 |
| Measurement of the time-integrated mixing probability of B mesons | χbar = 0.126 ± 0.008 (stat.+syst.) |
1450 |
Public Note 10335 2011-01-27 |
| Improved measurement of time-integrated CP violation in D0→h+h- decays | ACP(π+π-) = [0.22 ± 0.24(stat.) ± 0.11 (syst.)]% ACP(K+K-) = [-0.24 ± 0.22(stat.) ± 0.10 (syst.)]% |
6000 |
Phys. Rev. D 85, 012009 (2012) 10-09-16 Previous result: Phys. Rev. Lett. 94, 122001 (2005) (web) |
| First ADS analysis of B→DK Decays in Hadron Collisions | RADS(K) = [22.5 ± 8.4 (stat.) ± 7.9
(syst.)]× 10-3 AADS(K) = -0.63 ± 0.40 (stat.) ± 0.23 (syst.) RADS(π) = [4.1 ± 0.8 (stat.) ± 0.4 (syst.)]× 10-3 AADS(π) = 0.22 ± 0.18 (stat.) ± 0.06 (syst.) |
5000 |
Public Note 10309 2010-09-02 |
| Updated Measurement of CP Violating Phase βsJ/ψφ | βs within [0.02,0.52] U [1.08,1.55] at 68% C.L. p-value(SM) = 0.44 (~0.8 σ) ΔΓs = 0.075 ± 0.035 (stat) ± 0.01 (syst) ps-1 |
5200 | arxiv:1112.1726 2010-05-13 Prev. results: Public Note 9458 (web) PRL 100, 161802 (2008) PRL 100, 121803 (2008) |
| Calibration of the Same Side Kaon Tagger using Bs mixing | A = 0.94 ± 0.15 (stat.) ± 0.13 (syst.) T = ε A2 D2 = (3.2 ± 1.4 (stat.+syst.) ) % |
5200 | Public Note 10108 10-02-04 |
| Combination of D0 and CDF results on ΔΓs and the CP-violating phase βsJ/ψφ | βsJ/ψφ within [0.27, 0.59] U [0.97, 1.30] at 68% C.L. p-value(SM) = 3.4% (~2.12 σ) 2D confidence region |
2800 |
Public Note 9787 2009-07-21 |
| ACP and BR of Λb Charmless 2-Body Decays | ACP(Λb→ pπ)=0.03± 0.17± 0.05 ACP(Λb→ pK)=0.37 ± 0.17 ± 0.03 Derived: BR(Λb→ pπ)=(3.1± 0.6± 0.7)x10-6 (PDG) BR(Λb→ pK)=(5.0± 0.7± 1.0)x10-6 |
1100 |
Phys. Rev. Lett. 103, 031801 (2009) Phys. Rev. Lett. 106, 181802 (2011) 07-10-18 |
| Measurements of Branching Fractions and CP Asymmetries in B- → D0CPK- Decays | R = 0.0745 ± 0.0043 (stat) ± 0.0045 (sys) RCP+ = 1.30 ± 0.24 (stat) ± 0.12 (sys) ACP+ = 0.39 ± 0.17 (stat) ± 0.04 (sys) |
1100 |
Phys. Rev. D 81, 031105(R) (2010)
07-10-18 rev. 08-07-24 |
| 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 |
Phys. Rev. Lett. 100, 121802 (2008) |
| 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 |
| 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 |
Phys. Rev. Lett. 103, 031801 (2009) Phys. Rev. Lett. 106, 181802 (2011) 07-10-18 Prev. Result: PRL 97, 211802 2006 |
| Measurement of B0 Oscillations and Calibration of Flavor Tagging in Semileptonic Decays |
Δ md = 0.509 ± 0.010 ± 0.016ps-1 ε D2 = 1.54 ± 0.05 |
1000 | Note 8235 06-04-06 |
| Observation of Bs - Bs Oscillations | Δms = 17.77 ± 0.10 (stat) ± 0.07(sys) |Vtd|/|Vts| = 0.2060 ± 0.0007(stat+sys) +0.0081-0.0060(theo) |
1000 |
PRL 97, 242003 2006 Prev. Result: PRL 97, 062003 2006 |
| Observation of Bs → K+K- Measurement of B → hh BRs and CP Asymmetry in B0 → K+π- |
ACP(π+ K- - K+π-) = -0.013 ± 0.078 ± 0.012 BR(Bs → K+K-) = 33 ± 5.7 ± 6.7*10-6 |
180 |
PRL 97, 211802 2006 New Prel. Result |
| First observation of Bs -> φφ Branching fraction and direct CP asymmetry in B+ -> φ K+ |
BR(Bs->φφ) = (1.4 ±0.6 ± 0.2 ± 0.5(BR))*10-5 BR(B+ → φ K) / BR(B+ → J/ψ K) = 0.0076 ± 0.0013 ± 0.0006 ACP = -0.07 ± 0.17 +0.03-0.02 |
180 |
PRL 95 031801 2005 |
| Relative Branching Fractions and search for CP Asymmetry for D0 -> Kπ/KK/&pip;π |
ACP(KK) = 2.0 ± 1.2 ± 0.6 ACP(ππ) = 1.0 ± 1.3 ± 0.6 |
123 |
PRL 94, 122001 2005 |
Lifetimes |
Result | (pb-1) | Paper/Note |
|---|---|---|---|
| Measurement of the Bc lifetime in fully reconstructed Bc → J/ψ π decays | τ = (0.452 ± 0.048 ± 0.027)ps cτ = 136 ± 14 ± 8 μm | 6700 | Submitted to
Phys. Rev. D 2012-10-08 |
| First measurement of the B0s→J/ψf0 lifetime | τ = 1.70 +0.12-0.11 (stat.)± 0.03(syst.) ps |
3800 |
Phys. Rev. D 84 052012 (2011) 2011-06-21 |
| Measurement of b-hadron lifetimes in decays to J/ψ | τ(B+)=1.639 ± 0.009(stat.) ± 0.009 (syst.) ps τ(B0)=1.507 ± 0.010(stat.) ± 0.008 (syst.) ps τ(Λb)=1.537 ± 0.045 (stat.) ± 0.014 (syst.) ps τ(B+)/τ(B0)=1.088 ± 0.009 (stat.) ± 0.004 (syst.) τ(Λb)/τ(B0)=1.020 ± 0.030 (stat.) ± 0.008 (syst.) |
4300 | Phys. Rev. Lett. 106, 121804 (2011) 2009-12-17 Prev. results: Note 8524 (web) Phys. Rev. Lett. 98, 122001 (2007) |
| Observation of Ωb and measurement of properties of Ξb and Ωb | m(Ωb)=6054.4 ± 6.8 (stat.) ± 0.9 (syst.) MeV/c2 m(Ξb)=5790.9 ± 2.6(stat.) ± 0.8(syst.) MeV/c2 τ(Ωb)=1.13+0.53-0.40(stat.) ± 0.02(syst.) ps τ(Ξb)=1.56+0.27-0.25(stat.) ± 0.02(syst.) ps |
4200 |
Phys. Rev. D80, 072003 (2009) 09-05-14 |
| /\b Lifetime in /\b → /\c π Decays | cτ(/\b) = 420.1 ± 13.7(stat.) ± 10.6 (syst.) ±m τ(/\b)/τ(B0) = 0.916 ± 0.038 |
1070 |
PRL 104, 102002 (2010) 09-04-16 |
| Updated Measurement of CP Violating Phase βsJ/ψφ | βs within [0.28, 1.29] at 68% C.L. p-value(SM) = 0.07 (~1.8 σ) ΔΓs = 0.02 ± 0.05 (stat) ± 0.01 (syst) ps-1 |
2800 |
Public
Note 08-07-24 Prev. results: PRL 100, 161802 (2008) PRL 100, 121803 (2008) |
| B+ Lifetime in B+ → D0π+ | τ(B+) = 1.662 ± 0.023 (stat.) ± 0.015 (syst.) ps | 1000 |
PRD 83, 032008 (2011) |
| Measurement of Bc± Lifetime in Semileptonic Decays | cτ(Bc) = 142.5 +15.8-14.8(stat.) ± 5.5 (syst.) ±m |
1000 |
Public
Note 08-03-27 |
| Measurement of the Bs Lifetime in hadronic Bs0 → Ds- (φ π-)π+ Decays | cτ(Bs) = 455.0 ± 12.2 (stat.) ± 8.2 (syst.) μm | 1300 |
Phys. Rev. Lett. 107, 272001 (2011) 2008-02-07 revised 2008-10-23 |
| Lifetime difference and CP violating phase in Bs → J/ψ φ decays |
ΔΓ = 0.076+0.059-0.063(stat.) ± 0.006 (syst.) ps-1 Results with CP phase floating |
1700 |
PRL 100, 121803 (2008) 07-08-09 Prev. result (260 pb-1) PRL 94, 101803 2005 |
|
Bs meson lifetime and ΔΓ (excl. reconstruction in Bs → K+K - decays) |
τBs→ 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) |
τB0s= 1.381 ± 0.055 +0.052-0.046ps τB0s/τB0 = 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) |
τB+= 1.66 ± 0.03 ± 0.01ps τB0= 1.51 ± 0.02 ± 0.01ps τBs= 1.60 ± 0.10 ± 0.02ps τB+/τB0 = 1.10 ± 0.02 ± 0.01 τBs/τB0 = 1.06 ± 0.07 ± 0.01 |
360 |
Note 05-03-03 |
| B+ and B0 meson lifetimes (part. reconstruction in semileptonic decays) |
τB+= 1.653 ± 0.029 +0.033-0.031ps τB0= 1.473 ± 0.036 ± 0.054ps τB+/τB0 = 1.123 ± 0.040 +0.041-0.039 |
260 |
Note 05-02-24 |
|
/\b baryon lifetime (excl. reconstruction in /\b → J/ψ /\ decays) |
τ/\b= 1.593 +0.083-0.078 ± 0.033 ps τ/\b/τB0 = 1.037 ± 0.058 |
1000 |
PRL, hep-ex/0609021 New Prel. Result |
|
Bc meson lifetime (part. reconstruction in semileptonic decays) |
τBc= 0.463 +0.073-0.065 ± 0.036 ps | 360 |
PRL 97, 012002 2006 |
| Time-Dependent Amplitude Analysis of Bs → J/ψ φ and B0 → J/ψ K*0 Decays and a Lifetime Difference in the Bs System |
ΔΓ/Γ = 0.65+0.25-0.33 ± 0.01 |
260 |
PRL 94, 101803 2005 New Preliminary (1.5/fb) |
Decays |
Result | (pb-1) | Paper/Note |
|---|---|---|---|
| Branching Ratio Measurements of Exclusive b→s μ+μ- Decays and Angular Analysis in B→K(*) μ+μ- Decays | See web page | 9600 |
Public Note 10894 2012-06-28 |
| Measurement of BR(Bs→J/ψφ) and extraction of the fragmentation fractions | fs/fd * BR(Bs→J/ψφ): (3.17 ± 0.04 (stat.) ± 0.26 (sys) ± 0.14 (pdg) ) × 10- 4 | 9600 | Public Note 10795 2012-04-20 |
| Search for B0(s)→μ+μ- in the whole Run II sample | Br(B0s→μ+μ-) = 1.3+0.9-0.7 ×10-8 Br(B0→μ+μ-) < 4.6 ×10-9 at the 0.95 CL |
9600 |
Public Note in preparation 2012-02-09 Previous result: Phys. Rev. Lett. 107, 191801 (2011) |
| Measurement of the B0s→ D(*)+sD(*)-s branching fractions | Br(B0s→ D+sD-s) = (0.49 ± 0.06 ± 0.05 ± 0.08)% Br(B0s→ D*+sD-s) = (1.13 ± 0.12 ± 0.19 ± 0.09)% Br(B0s→ D*+sD*-s) = (1.75 ± 0.19 ± 0.17 ± 0.29)% Br(B0s→ D(*)+sD(*)-s) = (3.38 ± 0.25 ± 0.30 ± 0.56)% |
6800 |
Phys. Rev. Lett. 108, 201801 (2012) 2012-02-26 Prev. results: Phys. Rev. Lett. 100, 021803 (2008) |
| Measurement of B(Λb → Λc+ π- π+ π-) | B(Λb → Λc+ π- π+ π-) / B(Λb → Λc+ π-) = 3.04 ± 0.33 (stat) +0.70-0.55 (syst) B(Λb → Λc+ π- π+ π-) = (26.8 +11.9-11.2 ) × 10-3 |
2400 | Phys. Rev. D 85, 032003 (2012) 2011-07-21 |
| Observation of baryonic FCNC decays and updated measurement of Br and angular observables in B→K(*)μμ | B(Λb0→Λμ+μ-) /
B(Λb0→J/ψΛ)=[2.45±0.59(stat)±0.29(syst)]×10-3 See the webpage for all other results. | 6800 | Phys. Rev. Lett. 107,
201802 (2011) Phys.Rev.Lett. 108 081807 (2012) 2011-08-02 Previous result: Phys. Rev. Lett. 106, 161801 (2011) web |
| First evidence for pure annihilation B0s→π+π- decays | Br(B0s→π+π-) = (0.57 ± 0.15(stat.) ± 0.10(syst.))10-6 0.05 < Br(B0→K+K-)106 < 0.46 at the 90% CL |
6100 |
Phys. Rev. Lett. 108, 211803 (2012) 2011-05-24 |
| Measurement of the B0s→J/ψf0 branching ratio | R = 0.257 ± 0.020(stat.) ± 0.014(syst.) |
3800 |
Phys. Rev. D 84 052012 (2011) 2011-06-21 |
| Measurement of B(Λb → Λc+ π- π+ π-) | B(Λb → Λc+ π- π+ π-) / B(Λb → Λc+ π-) = 3.04 ± 0.33 (stat) +0.70-0.55 (syst) B(Λb → Λc+ π- π+ π-) = (26.8 +11.9-11.2 ) × 10-3 |
2400 | arXiv:1112.3334 2011-07-21 |
| Search for B0(s)→μ+μ- | Br(B0s→μ+μ-) = 1.8+1.1-0.9 ×10-8 Br(B0→μ+μ-) < 6.0 ×10-9 |
7000 |
Phys. Rev. Lett. 107, 191801 (2011) 2011-07-07 Previous result: Public Note 9892 |
| First ADS analysis of B→DK Decays in Hadron Collisions | RADS(K) = [22.0 ± 8.6 (stat.) ± 2.6
(syst.)]× 10-3 AADS(K) = -0.82 ± 0.44 (stat.) ± 0.09 (syst.) RADS(π) = [2.8 ± 0.7 (stat.) ± 0.4 (syst.)]× 10-3 AADS(π) = 0.13 ± 0.25 (stat.) ± 0.02 (syst.) |
7000 |
Phys. Rev D84, 091504 (2011) 2011-06-06 Previous result: Public Note 10309 10-09-02 |
| Observation of the Bs→J/ψKs and Bs→J/ψK* decays | BR(Bs→J/ψK0)=(3.53±0.61(stat)±0.35(sys)±0.43(frag)±0.13(PDG))x10-5 BR(Bs→J/ψK*)=(8.3±1.2(stat)±3.3(sys)±1.0(frag)±0.4(PDG))x10-5 |
5900 | Phys. Rev. D83, 052012 (2011) 2010-07-08 |
| Measurement of the Polarization Amplitudes of the Bs0→φφ Decay | |A0|2 = 0.348 ± 0.041 (stat) ± 0.021 (syst) |A|||2 = 0.287 ± 0.043 (stat) ± 0.011 (syst) |A⊥|2 = 0.365 ± 0.044 (stat) ± 0.027 (syst) cos δ|| = -0.91 + 0.15- 0.13 (stat) ± 0.09 (syst) |
2900 | Phys. Rev. Lett. 107, 261802 (2011) 2011-04-07 |
| Forward-backward asymmetry in B→K(*)μμ and observation of Bs→φμμ | BR(Bs→φμμ)/BR(Bs → J/ψφ)= [1.11±0.25(stat)±0.09(syst)]x10-3 q2 dependence of AFB(B→K*μμ) |
4400 | PRL 106, 161801 (2011) 2009-11-12 Previous result: Phys. Rev. D79, 011104(R) (2009)( web) |
| Resonance structure of Λb→Λcπ-π+π- |
BR(Λb→Λc(2595)π-/Λb→Λcπ-π+π-= (2.5 ± 0.6(stat.) ± 0.5(syst.)) x 10-2 BR(Λb→Λc(2625)π-/Λb→Λcπ-π+π-= (6.2 ± 1.0(stat.) +1.0 -0.9(syst.)) x 10-2 BR(Λb→Σ(2455)c++ π- π-/Λb→Λcπ-π+π-= (5.2 ± 1.1(stat.) ± 0.8(syst.)) x 10-2 BR(Λb→Σ(2455)c0 π+π-/Λb→Λcπ-π+π-= (8.9 ± 2.1(stat.) +1.2 -1.0(syst.)) x 10-2 |
2400 |
Public Note 10001 09-10-29 |
| Search for FCNC Rare Decay: Bs,d → μ+ μ- |
BR(Bs → μ+ μ-) < 4.3*10-8 95%CL BR(Bd → μ+ μ-) < 7.6*10-9 95%CL |
3700 |
Public Note 9892 Prev. Results: PRL 100,101802 (2008) (2 fb-1) Note 8176 (780 pb-1) PRL 95, 221805 2005 PRL 93, 032001 2004 |
| Ratio of branching fractions: BR(Bs→φφ)/BR(Bs→J/ψφ) |
BR(Bs→φφ)/BR(Bs→J/ψφ)= 1.78 ± 0.14(stat) ± 0.20(sys) * 10-2 |
2900 | Public Note 10064 Previous result: PRL 95 031801 2005 (web) |
| Search for Lepton Flavor Violating Decays Bs,d → eμ | BR(Bs0 → eμ) < 2.6*10-7 (95%CL) BR(Bd0 → eμ) < 7.9*10-8 (95%CL) |
2000 | Phys. Rev. Lett. 102, 201801 (2009) |
| Search for the Rare Decay D0 → μ+ μ- | BR(D0 → μ+ μ-) < 5.3*10-7 (95%CL) |
360 |
PRD 82, 091105 (2010) 08-02-28 |
| ACP and BR of Λb Charmless 2-Body Decays | ACP(Λb→ pπ)=0.03± 0.17± 0.05 ACP(Λb→ pK)=0.37 ± 0.17 ± 0.03 Derived: BR(Λb→ pπ)=(3.1± 0.6± 0.7)x10-6 (PDG) BR(Λb→ pK)=(5.0± 0.7± 1.0)x10-6 |
1100 |
Phys. Rev. Lett. 103, 031801 (2009) |
| 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 |
Phys. Rev. Lett. 103, 031801 (2009) Prev. Result: PRL 97, 211802 2006 |
| Measurements of Branching Fractions and CP Asymmetries in B- → D0CPK- Decays | R = 0.0745 ± 0.0043 (stat) ± 0.0045 (sys) RCP+ = 1.30 ± 0.24 (stat) ± 0.12 (sys) ACP+ = 0.39 ± 0.17 (stat) ± 0.04 (sys) |
1100 | Phys. Rev. D 81, 031105(R) (2010)
07-10-18 rev. 08-07-24 |
| Angular Analysis of B0 → J/ψ 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 |
| 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 |
Phys. Rev. Lett. 103, 191802 (2009) |
| Measurement of the branching ratio of D+ → π-π+π+ | B(D+ → π-π+π+)/
B(D+ → K-π+π+) = (3.461 ± 0.038 ± 0.040 )% B(D+ → π-π+π+) = (3.29± 0.11)10±? 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 |
| Observation of exclusive decay Bs → Ds Ds | R(Bs → DsDs ) / BR(B0 → DsD+ ) = 1.67 ± 0.41 ± 0.12 ± 0.24 (fs/fd) ± 0.39(BR) | 355 |
Phys. Rev. Lett. 100, 021803 (2008) |
| Ratio of Branching Fractions BR(B0 → DsD+) / BR(B0 → D+3π-) and BR(B0 → Ds(*)D+(*)) / BR(B0 → D+3π-) |
BR(B0 → DsD+) / BR(B0 → D+3±) = 1.99 ± 0.13 ± 0.11 ± 0.44(BR Ds → φπ) ± 0.08(other BR) |
355 |
Phys. Rev. Lett. 98, 061802 (2007) |
| 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+ → J/psiπ+) / BR(B+ → J/psi K+) |
BR(B+ → J/psiπ+) / BR(B+ → J/psi K+) = 4.86 ± 0.82 ± 0.15 |
210 |
Phys. Rev. D79, 112003 (2009) |
|
Ratio of Branching Fractions:
BR(Λb → Λc+μ-ν) /BR(Λb→ Λc+π-) |
BR(Λb → Λcμ- ν)
/ BR(Λb → Λcπ-)
= 16.6 ± 3.0 ± 1.0 +2.6-3.4(PDG) ± 0.3(EBR) BR(B0 → D*-μ+ ν) / BR(B0 → D*-π+) = 16.5 ± 2.3 ± 0.6 ± 0.5(PDG) ± 0.8(EBR) BR(B0 → D-μ+ ν) / BR(B0 → D-π+) = 9.9 ± 1.0 ± 0.6 ± 0.4(PDG) ± 0.5(EBR) |
172 |
Phys. Rev. D79, 032001 (2009) |
| Observation of Bs → K+K- Measurement of B → hh BRs and CP Asymmetry in B0 → K+π- |
ACP(π+ K- - K+π-) = -0.013 ± 0.078 ± 0.012 BR(Bs → K+K-) = 33 ± 5.7 ± 6.7*10-6 |
180 |
PRL 97, 211802 2006 New Prel. Result |
| D0 → K+ π - Wrong Sign DCS Decays |
R(WS/RS) = 4.05 ± 0.21 (stat) ± 0.12 (sys) ± 10-3 | 350 |
PRD RC 74, 031109 2006 |
| Observation of Decay Bs → ψ (2S) φ |
BR(Bs → ψ (2S) φ) / BR(Bs → J/ψ φ) = 0.52 ± 0.13 ± 0.04 ± 0.06(BR) |
360 |
PRL 96, 231801 2006 |
| Ratio of Branching Ratios for Λb → Λcπ/B0 → D+π- |
σΛb(pT > 6)*BR(Λb → Λcπ) / σB0(pT > 6)*BR(B0 → D+π-) = 0.82 ± 0.08 ± 0.11 ± 0.22(±c BR) | 106 |
PRL 98, 122002 2007 |
| Ratio of Branching Ratios for Bs/B0 and B+/B0
|
BR(Bs → Dsπ) / BR(B0 → D-π) = 1.13 ± 0.08 ± 0.23 BR(Bs → Dsπππ) / BR(B0 → D-πππ) = 1.05 ± 0.10 ± 0.22 |
355 |
PRL 98, 061802 2007 Prev. Result (115pb-1): PRL 96, 191801 2006 |
| Search for FCNC Rare Decay: Bs → μ+ μ- |
BR(Bs → μ+ μ-) < 2.0*10-795%CL |
364 |
PRL 95, 221805 2005 Prev. Result: PRL 93, 032001 2004 New Prel. Result |
| Search for Λb in pK and pπ decays |
BR(Λb → hh) < 2.3*10-590%CL |
193 |
PRD 72, 051104 2005 |
| Hadronic Moments in Semileptonic B Decays |
M1 and
M2 |
180 |
PRD RC 71, 051103 2005 |
| First observation of Bs -> φφ Branching fraction and direct CP asymmetry in B+ -> φ K+ |
BR(Bs->φφ) = (1.4 ±0.6 ± 0.2 ± 0.5(BR))*10-5 BR(B+ → φ K) / BR(B+ → J/ψ K) = 0.0076 ± 0.0013 ± 0.0006 ACP = -0.07 ± 0.17 +0.03-0.02 |
180 |
PRL 95 031801 2005 |
| Relative Branching Fractions and search for CP Asymmetry for D0 -> Kπ/KK/ππ |
ACP(KK) = 2.0 ± 1.2 ± 0.6 ACP(ππ) = 1.0 ± 1.3 ± 0.6 |
123 |
PRL 94, 122001 2005 |
| Time-Dependent Amplitude Analysis of Bs → J/ψ φ and B0 → J/ψ K*0 Decays and a Lifetime Difference in the Bs System |
ΔΓ/Γ = 0.65+0.25-0.33 ± 0.01 |
260 |
PRL 94, 101803 2005 New Preliminary (1.5/fb) |
| Search for FCNC Rare Decay: D0 → μ+ μ- |
BR(D0 → μ+ μ-) < 2.5*10-690%CL |
69 |
PRD 68, 091101 2003 |
Production |
Result | (pb-1) | Paper/Note |
|---|---|---|---|
| Measurement of BR(Bs→J/ψφ) and extraction of the fragmentation fractions | fs/fd * BR(Bs→J/ψφ): (3.17 ± 0.04 (stat.) ± 0.26 (sys) ± 0.14 (pdg) ) × 10- 4 | 9600 | Public Note 10795 2012-04-20 |
| Fragmentation Study with D±s/D± -- K Correlations | See the webpage for results | 360 | Public Note 10704 2012-02-02 |
| First 3-dimensional measurement of the Υ(nS) spin-alignment | See the webage for results | 6700 | Phys.Rev.Lett. 108,
151802 (2012) 2011-09-29 |
| Measurement of Υ(1S) polarization | Polarization vs. pT | 2900 |
Public Note 9966 09-09-03 |
| σBc*BR(Bc → J/ψ μ X) | σBc(pt>6.0GeV)*BR(Bc → J/ψ μ ν) / σB+*BR(B+ → J/ψK) = 0.227 ± 0.033(stat) +0.024-0.017(sys) ± 0.014(pt spectrum) |
1000 |
Public Note 9740 09-03-05 Previous results: Note 7649 (360 pb-1) |
| Study of multi-muon event | 2100 | arXiv:0810.5357 08-07-30 |
|
| Measurement of ψ(2S) Production Cross Section | σ inc.(pp → &psi(2S)X,|y(&psi(2S))| < 0.6, pT > 2 GeV/c)1.96 × Br(ψ(2S) → μμ) = 3.14 ± 0.04(stat)+0.23-0.22(syst) nb |
1100 |
Phys. Rev. D80, 031103 (2009) 07-10-18 |
| Measurement of the correlated bb production in pp collision at 1960 GeV |
σb→μ,b→&mu
( pT b > 2GeV,|y|b<1.3; pTμ>3GeV, |η|&mu<0.7) = 1549 ± 133 pb |
742 |
Phys. Rev. D77, 072004 (2008) |
| Measurement of Charm Meson pair Cross Sections | Plots of Charm Cross Sections | 1000 | Note 8621 06-09-21 |
| Relative cross sections of χc1 and χc2 | σ(χc2)/&sigma(χc1) = 0.70 ± 0.04 (stat.) ± 0.04 (syst.) ± 0.06 (B.F.), for prompt production σ(χc2)/σ(χc1) = 0.25 ± 0.07 (stat.)± 0.01 (syst.) ± 0.02 (B.F.), for B decay |
1100 | Phys. Rev. Lett. 98, 232001 (2007) |
| Measurement of b production cross section using Hb μ
D0(*)channels (Hb is an admixture of b hadrons) |
σ(pp→ Hb) × BR(Hb→μ- D0 X) × BR(D0→π+K- ) = 3.53 nb ± 0.20 nb (stat.) +0.34 -0.36 (syst.) nb σ(pp→Hb) × BR(Hb→μ- D*+ X) × BR(D*+→D0π+ )× BR(D0→π+K- ) = 1.04 nb ± 0.13 nb (stat.) +0.12 -0.14 (syst.) nb |
83 |
Phys. Rev. D79, 092003 (2009) |
| 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 |
Phys. Rev. D77, 072003 (2008) |
| 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 |
| σBc*BR(Bc → J/ψ e X) |
σBc(pt>4.0 GeV)*BR(Bc &rarr J/ψ e X) / &sigmaB+*BR(B+ → J/ψK) = 0.282 ± 0.038 ± 0.065 ± 0.035(sys-yield) σBc(pt>6.0 GeV)*BR(Bc → J/ψ e X) / σB+*BR(B+ → J/ψK) = 0.242 ± 0.036 ± 0.051 ± 0.031(sys-yield) |
360 |
Note 7926 05-04-07 |
| Measurement of the J/ψ Spin Alignment from Prompt and B Decays and Measurement of the ψ(2S) Spin Alignment from Prompt and B Decays |
αB(J/ψ)=-0.066 ± 0.050 αPrompt(J/ψ) Longitudinal at higher pT αB(ψ(2S))=0.28 ± 0.27 ± 0.03 αPrompt(α(2S)) Longitudinal at higher pT |
800 |
PRL 99, 132001 (2007) |
| Exclusive B+→J/ψ K+ cross section | σ(pT> 6 GeV/c, |y|< 1) = 2.78 ± 0.24 (stat+sys) μb | 740 | PRD 75, 012010 2007 |
| Measurement of the J/ψ Meson and b Quark Production Cross Sections and
J/ψ Only |
Results |
40 |
PRD 71, 032001 2005 |
| Direct Charm Meson Production Cross Section |
Cross Sections |
5.8 |
PRL 91, 241804 2003 |
Spectroscopy |
Result | (pb-1) | Paper/Note |
|---|---|---|---|
| Evidence for bottom baryon resonance Λb0* | M(Λb0*)= 5919.5±0.35(stat)±1.72(sys) MeV/c2 | 9600 |
Public Note 10900 2012-07-23 |
| Observation of Ξ0b | M(Ξ0b) = 5787.8 ± 5.0 (stat) ± 1.6 (syst) MeV/c² M(Ξ-b) = 5796.7 ± 5.1 (stat) ± 1.6 (syst) MeV/c² |
4200 |
Phys. Rev. Lett. 107, 102001 (2011) 2011-07-14 |
| Measurement of the resonance properties of Σb(*) baryons | M(Σb+)=5811.2+0.9-0.8(stat.) ± 1.7(syst.) MeV/c2 M(Σb-)=5815.5 +0.6-0.5(stat.) ± 1.7(syst.) MeV/c2 M(Σb*+)= 5832.0 ± 0.7 (stat.)± +1.8(syst.) MeV/c2 M(Σb*-)= 5835.0 ± 0.6(stat.)± +1.8(syst.) MeV/c2 Γ(Σb+)=9.2+3.8-2.9(stat.)+1.0-1.1(syst.) MeV/c2 Γ(Σb-)=4.3+3.1-2.1(stat.)+1.0-1.1(syst.) MeV/c2 Γ(Σb*+)= 10.4+2.7-2.2(stat.)+0.8-1.2(syst.) MeV/c2 Γ(Σb*-)=6.4 +2.2-1.8(stat.)+0.7-1.1(syst.) MeV/c2 |
6000 | Phys. Rev. D 85, 092011 (2012) 10-07-21 Prev. Result: PRL 99, 202001 (2007) (web) |
| Observation of Ξ0b | M(Ξ0b) = 5787.8 ± 5.0 (stat) ± 1.6 (syst) MeV/c² M(Ξ-b) = 5796.7 ± 5.1 (stat) ± 1.6 (syst) MeV/c² |
4200 |
arXiv:1107.4015 2011-07-14 |
| Observation of a Narrow Near-Threshold Structure in the J/ψφ Mass Spectrum | m = 4143.4 +2.9-3.0 (stat.) ± 0.6(syst.) MeV/c2 Γ = 15.3 +10.4 -6.1 (stat.) ± 2.5(syst.) MeV/c2 |
6000 |
Public Note 10244 10-07-01 Previous result: Phys. Rev. Lett. 102, 242002 (2009) (web) |
| Measurement of the resonance properties of Σb(*) baryons | M(Σb+)=5811.2+0.9-0.8(stat.) ± 1.7(syst.) MeV/c2 M(Σb-)=5815.5 +0.6-0.5(stat.) ± 1.7(syst.) MeV/c2 M(Σb*+)= 5832.0 ± 0.7 (stat.)± +1.8(syst.) MeV/c2 M(Σb*-)= 5835.0 ± 0.6(stat.)± +1.8(syst.) MeV/c2 Γ(Σb+)=9.2+3.8-2.9(stat.)+1.0-1.1(syst.) MeV/c2 Γ(Σb-)=4.3+3.1-2.1(stat.)+1.0-1.1(syst.) MeV/c2 Γ(Σb*+)= 10.4+2.7-2.2(stat.)+0.8-1.2(syst.) MeV/c2 Γ(Σb*-)=6.4 +2.2-1.8(stat.)+0.7-1.1(syst.) MeV/c2 |
6000 | Public Note 10286 10-07-21 Prev. Result: PRL 99, 202001 (2007) (web) |
| Measurement of the resonance properties of charm baryons | M(Σc++(2455))=2453.90 ± 0.13(exp) ± 0.14 (PDG) MeV/c2 M(Σc0(2455))=2453.74 ± 0.12 ± 0.14 (PDG) MeV/c2 M(Σc++(2520))=2517.19 ± 0.46 ± 0.14 (PDG) MeV/c2 M(Σc0(2520))=2519.34 ± 0.58 ± 0.14 (PDG) MeV/c2 m(Λc+(2595))=2592.25 ± 0.24 ± 0.14 (PDG) MeV/c2 m(Λc+(2625))= 2628.11 ± 0.13 ± 0.14 (PDG) MeV/c2 |
5200 | Phys. Rev. D84 012003 (2011) 2010-07-01 |
| Observation of Ωb and measurement of properties of Ξb and Ωb | m(Ωb)=6054.4 ± 6.8 (stat.) ± 0.9 (syst.) MeV/c2 m(Ξb)=5790.9 ± 2.6(stat.) ± 0.8(syst.) MeV/c2 τ(Ωb)=1.13+0.53-0.40(stat.) ± 0.02(syst.) ps τ(Ξb)=1.56+0.27-0.25(stat.) ± 0.02(syst.) ps |
4200 |
Phys. Rev. D80, 072003 (2009) 09-05-14 |
| Mass Measurement of the X(3872) State | m(X(3872)) = 3871.61 ± 0.16 ± 0.19 MeV/c2 Δ m < 3.2 (3.6) MeV/c2 at 90% (95%) C.L. |
2400 |
Phys. Rev. Lett. 103, 152001 (2009) 08-07-24 Prev. results: PRL, hep-ex/0612053 PRL 96, 102002 2006 |
| Search for Narrow Resonances below the Υ Mesons | Γl < 10 eV for 6.3 < m(μμ) < 9 GeV/c2 (90% CL) |
630 |
arXiv:0903.2060 Eur. Phys. J. C62, 319-326 (2009) 08-06-12 |
| Mass and width measurement of orbitally excited (L=1) B**0 mesons |
ΔM(B2*0) = 22.7+3.8-3.2 (stat.)
+3.2-10.2 (syst.) MeV/c2 m(B10) = 5725.3+1.6-2.2 (stat.) +1.4-1.5 (syst.) MeV/c2 m(B2*0) = 5740.2+1.7-1.8 (stat.) +0.9-0.8 (syst.) MeV/c2 |
1700 |
Phys. Rev. Lett. 102, 102003 (2009) Previous analysis (370/pb) Note 7938 |
| Observation of the exclusive decay Bc to J/ψ π and mass measurement |
m(B)c = 6275.6 ± 2.9 ?? 2.5 MeV/c2 | 2400 |
Phys. Rev. Lett. 100, 182002 (2008) Prev. prelim. results: 2.2/fb 07-07-12 1.1/fb 06-05-25 Published 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 |
Phys. Rev. Lett. 99, 052002 (2007) |
| 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 | Phys. Rev. Lett. 100, 082001 (2008) |
| Search for ηb decay into J/ψ J/ψ | σ(pp→ ηb, |y|<0.6, pT 3GeV) * BR < 2.6pb | 1000 | Note 8448 06-06-15 |
| Study of the Lifetime Distribution of the X(3872) |
Fbdecay = 16.9 ± 4.9 ± 2.0% | 220 |
Note 7159 04-06-24 |
| Pentaquark search in the channel J/ψ p |
Results |
280 |
Note 04-08-19 |
| Pentaquark search in the channel Θc → Dxp |
Results |
240 |
Note 04-04-28 |
| Pentaquark search in the channel Θ+ → p K0s |
Results |
180 |
Note 04-04-28 |
| Quantum Numbers of the X(3872) | JPC = 1++ or 2-+ | 780 |
Phys. Rev. Lett. 98, 132002 (2007) |
| Search for Exotic S=-2 Baryons (Pentaquarks) |
Results |
220 |
PRD 75 , 032003 2007 |
| B Hadron Mass Measurements |
mB+ = 5279.10 ± 0.41 ± 0.36MeV mB0 = 5279.63 ± 0.53 ± 0.33MeV mBs = 5366.01 ± 0.73 ± 0.33MeV m±b = 5619.7 ± 1.2 ± 1.2MeV |
220 |
PRL 96, 202001 2006 |
| Measurement of orbitally-excited charm states D1 and D2 |
mD1 = 2421.7 ± 0.7 ± 0.6MeV ΓD1 = 20.0 ± 1.7 ± 1.2 MeV mD2 = 2463.3 ± 0.6 ± 0.8MeV ΓD2 = 49.2 ± 2.3 ± 1.3 MeV |
210 |
PRD RC 73, 051104 2006 |
| Measurement of the Dipion Mass Spectrum
in X(3872) -> J/ψ π π Decay |
Dipion Mass Spectrum | 360 |
PRL 96, 102002 2006 |
| Evidence for exclusive decay Bc to J/ψ π and mass measurement |
mBc = 6285.7 ± 5.3 ± 1.2MeV | 360 |
PRL 96, 082002 2006 |
| Observation and Mass Measurement of the X(3872) |
mX(3872) = 3871.3 ± 0.7 ± 0.4MeV | 220 |
PRL 93, 072001 2004 |
| Measurement of the D+,Ds Mass Difference Using D+/Ds -> φπ |
m(Ds)-m(D+) = 99.41 ± 0.38 ± 0.21 |
11.6 | PRD 68, 072004 2003 |
