Presentation is loading. Please wait.

Presentation is loading. Please wait.

Recent Bottomonium Results from BaBar Bryan Fulsom SLAC National Accelerator Laboratory 35 th International Conference on High Energy Physics Paris, France.

Published byRosaline Walton Modified over 9 years ago

Similar presentations

Presentation on theme: "Recent Bottomonium Results from BaBar Bryan Fulsom SLAC National Accelerator Laboratory 35 th International Conference on High Energy Physics Paris, France."— Presentation transcript:

1 Recent Bottomonium Results from BaBar Bryan Fulsom SLAC National Accelerator Laboratory 35 th International Conference on High Energy Physics Paris, France July 22, 2010

2 This talk: –  (1D J )       (1S) –  (nS)   (e  e  )  b (1S) –  (3S)      h b (1P) –  (3S)    h b (1P)   b (1S) Overview Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 2/22 BaBar: 1999-2008 122M  (3S) / 100M  (2S)

3 Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 2/22 This talk: –  (1D J )       (1S) –  (nS)   (e  e  )  b (1S) –  (3S)      h b (1P) –  (3S)    h b (1P)   b (1S) Overview BaBar: 1999-2008 122M  (3S) / 100M  (2S)

4 Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 2/22 This talk: –  (1D J )       (1S) –  (nS)   (e  e  )  b (1S) –  (3S)      h b (1P) –  (3S)    h b (1P)   b (1S) Overview BaBar: 1999-2008 122M  (3S) / 100M  (2S)

5 Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 2/22 This talk: –  (1D J )       (1S) –  (nS)   (e  e  )  b (1S) –  (3S)      h b (1P) –  (3S)    h b (1P)   b (1S) Overview BaBar: 1999-2008 122M  (3S) / 100M  (2S)

6 This talk: –  (1D J )       (1S) –  (nS)   (e  e  )  b (1S) –  (3S)      h b (1P) –  (3S)    h b (1P)   b (1S) Overview Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 2/22 BaBar: 1999-2008 122M  (3S) / 100M  (2S)

7  (1D J ) Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 3/22

8 Expected  (1D J=1,2,3 ) properties –m  (1D J ) ~10160 MeV/c 2, m  (1D  J ) ~5-12 MeV/c 2,   (1D J ) ~30 keV Experimental observation –  (3S)   (1D 2? )   (1S)   l  l  –B (  (3S)   l  l  ) = (2.5 ± 0.5 ± 0.5)  10 -5 –m  (1D 2? ) = 10161.1 ± 0.6 ± 1.6 MeV/c 2 No evidence for  (1D J )       (1S) –Limit: B (  (1D J )       (1S)) < 4% –Theory: Kuang & Yan ~40%, Ko ~2%, Moxhay ~0.25%  (1D J ): General Information Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 4/22

9 Reconstruct  (3S)   (1D J )       (1S)      l  l  –Require exactly 4 tracks –m l  l  consistent with / constrained to m  (1S) –Minimize E   2 to select best candidate –m  (1D J ) resolution ~ 3 MeV/c 2 Maximum Likelihood fit to m     l  l  spectrum –  (1D J ) signals: Double Gaussian + Crystal Ball –Monte Carlo (MC)-determined backgrounds:  (3S)   bJ (2P)   (     or       )  (1S)  (3S)       (1S) +  FSR  (3S)   (       )  (1S)  (3S)   /      (2S) (      (1S))  (1D J ): BaBar Analysis Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 5/22

10 m  (1D 2 ) = 10164.5 ± 0.8 ± 0.6 MeV/c 2  (1D J ): Fit Results Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 6/22

11  (1D J ): Quantum Numbers Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 7/22 –L:     invariant mass P(  2 ) for m     distribution D(84.6%), S(3.1%), P(0.3%) –J:  Helicity Angle dN/d(cos   ) ~ 1 +  (3cos 2   -1)/2  = -1.0±0.4±0.1 consistent w. J = 2 –J P : Angle between     and l  l  planes dN/d  ~ 1 +  cos(2  ), sign(  ) = (-1) J P  = -0.4±0.3±0.1 consistent w. J P = 2 

12 Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 8/22  b (1S)

13  b (1S) observed in inclusive  spectrum for  (3S) and  (2S) Measured properties – B (  (3,2S)   b (1S)) = (5.1 ± 0.7)  10 -4 / (3.9 ± 1.5)  10 -4 –m  b (1S) = 9390.9 ± 2.8 MeV/c 2,   b (1S)  10 MeV –(m  (1S) – m  b (1S) ) = 69.3 ± 2.8 MeV/c 2 Hyperfine splitting theoretical predictions –Lattice: ~50-60 MeV/c 2 NRQCD: ~40 MeV/c 2  b (1S): General Information Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 9/22

14 Converted photons (   e  e  ) improve resolution (25  5 MeV) –Fit pair of tracks, selected with  2 fitter, m ,   –Additional cuts: |cos  thrust |, N tracks,    veto Simultaneous fit to E   spectrum in  (3S) and  (2S) datasets –  (3,2S)    b (1S): Breit-Wigner  Crystal Ball –e   e  E=m  (nS)   ISR  (1S): Crystal Ball –  bJ (2,1P)    (1S): Doppler broadening  Crystal Ball –Background: 4 th order polynomial  exponential decay  b (1S): Converted Photon Analysis Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 10/22

15  b (1S): Fit Results Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 11/22

16 E   and branching fractions as expected Mass-constrained fit: –No evidence for  b (2.3  stat.) Best fit result in m  b (1S) region: –Differs by +12.4 +3.8 -4.0 MeV/c 2 (3.3  stat., 2.6  w. syst.)   e  e  : Results Summary Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 12/22

17 Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 13/22 h b (1P)

18 Expect m h b (1P) = (m  b0 (1P) +3m  b1 (1P) +5m  b2 (1P) ) / 9  9900 MeV/c 2 Production mechanisms –B (  (3S)      h b (1P)) ~ 10 -3 – 10 -2 –B (  (3S)    h b (1P)) ~ 10 -3 –R(   h b (1P) /     h b (1P)) = 0.05 – 20 Expected decays –h b (1P)  ggg (57%),  b (1S) (41%),  gg (2%) Previous searches –B (  (3S)      h b (1P)) < 1.8  10 -3 –B (  (3S)    h b (1P)) < 2.8  10 -3 h b (1P): General Information Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 14/22

19 Reconstruct pair of oppositely charged tracks –Cuts on E total, R 2, N tracks, K S  veto (flight length, cos  ) Define     recoil mass: m R 2 = (m  (3S) – E      ) 2 – P      2  2 fit to m R with 7 components –h b signal: Symmetric two-sided Crystal Ball (TCB) –  (3S)       (2S): Asymmetric TCB + Bifurcated Gaussian –  (2S)       (1S): same, with fixed feed-down components –  b1,2 (2P)       b1,2 (1P): TCB, with fixed peak position –K S       : MC-determined phase space –Non-peaking background: 6 th order Chebychev polynomial     h b (1P): Analysis Strategy Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 15/22

20     h b (1P): Fit Results Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 16/22

21     h b (1P): Fit Results Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 17/22

22 No evidence for h b signal at m h b = 9900 MeV/c 2 –B (  (3S)      h b (1P)) = (0.0 ± 0.5 ± 0.3)  10 -4 (<1  10 -4 UL) Most significant scan point <2  significance Exclude B (  (3S)     h b (1P)) > 2.5  10 -4 (90% CL) over range     h b (1P): Fit Results Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 18/22

23 Reconstruct   (     ) +  –Require E  consistent with h b (1P)   b (1S) –Cuts on N tracks, R 2,   veto (all  candidates),   cos  h Define   missing mass: m.m.(   ) 2 = (m  (3S) – E    ) 2 – P    2 –Constrain m   to improve resolution –N   from m     fit in each m.m.(   ) bin  2 fit of m.m.(   ) distribution –h b (1P) signal: Double Crystal Ball –Background: 6 th order polynomial, from reweighted MC   h b (1P): Analysis Strategy Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 19/22

24   h b (1P): Fit Results Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 20/22

25 Fixed mass fit: –B (  (3S)   h b (1P)    b (1S)) = (3.1±1.1±0.4)  10 -4 (2.7  ) –1.5  10 -4 < B (  (3S)   h b (1P)    b (1S)) < 4.9  10 -4 Best fit m h b = 9903 ± 4 ± 1 MeV/c 2 consistent with predictions Combined results: –R(   h b (1P) /     h b (1P)) > 3.2 (>1.5 for m h b = 9903 MeV/c 2 )   h b (1P): Fit Results Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 21/22

26  (1D J )       (1S) –First observation of  (1D J ) hadronic decays –Quantum numbers and precise m  (1D 2 ) measurement  (2,3S) converted photon spectrum –Most significant (2.6  ) “  b ” signal at 9403.3±2.4 +0.9 -1.5 MeV/c 2 –Improved and first direct  bJ (1,2P)    (1S) measurement h b (1P) Search –No evidence for  (3S)      h b (1P) –Marginal evidence (2.7  ) for  (3S)    h b (1P)     b (1S) – B (  (3S)   h b (1P)) / B (  (3S)     h b (1P)) > 1 at 90% C.L. Summary Recent Bottomonium Results from BaBar / Bryan Fulsom / ICHEP / 2010.07.22 / Page 22/22

27 FIN

Download ppt "Recent Bottomonium Results from BaBar Bryan Fulsom SLAC National Accelerator Laboratory 35 th International Conference on High Energy Physics Paris, France."

Similar presentations

V.L. Kashevarov. Crystal Collaboration Meeting, Edinburg,13-15 Sept. 2009 Photoproduction of    on protons ► Identification of  p →  o.

V.L. Kashevarov. Crystal Collaboration Meeting, Edinburg,13-15 Sept Photoproduction of    on protons ► Identification of  p →  o.
26/07/2002C.Palomares / ICHEP02 Search for  b in two-photon collisions with L3 Detector at LEP Carmen Palomares CERN On behalf of L3 Collaboration.

26/07/2002C.Palomares / ICHEP02 Search for  b in two-photon collisions with L3 Detector at LEP Carmen Palomares CERN On behalf of L3 Collaboration.
Excited Charm and K0sK0s Resonance Production at ZEUS V. Aushev For the ZEUS Collaboration XXXIX International Symposium on Multiparticle Dynamics ''Gold.

Excited Charm and K0sK0s Resonance Production at ZEUS V. Aushev For the ZEUS Collaboration XXXIX International Symposium on Multiparticle Dynamics ''Gold.
Semileptonic and EW Penguin Decay Results from BaBar John J. Walsh INFN-Pisa BaBar Collaboration XXXXth Rencontres de Moriond QCD and Hadronic Interactions.

Semileptonic and EW Penguin Decay Results from BaBar John J. Walsh INFN-Pisa BaBar Collaboration XXXXth Rencontres de Moriond QCD and Hadronic Interactions.
Recent results on quarkonium spectroscopy from BaBar and Belle Bryan Fulsom SLAC National Accelerator Laboratory XXIII iemes Rencontres de Blois Blois,

Recent results on quarkonium spectroscopy from BaBar and Belle Bryan Fulsom SLAC National Accelerator Laboratory XXIII iemes Rencontres de Blois Blois,
Measurement of non BB Decays of Y(4S) to Y(1S)     and Y(2S)     Silvano Tosi Università & INFN Genova.

Measurement of non BB Decays of Y(4S) to Y(1S)     and Y(2S)     Silvano Tosi Università & INFN Genova.
Spectroscopy of Heavy Quarkonia Holger Stöck University of Florida Representing the CLEO Collaboration 6 th International Conference on Hyperons, Charm.

Spectroscopy of Heavy Quarkonia Holger Stöck University of Florida Representing the CLEO Collaboration 6 th International Conference on Hyperons, Charm.
Sep. 29, 2006 Henry Band - U. of Wisconsin 1 Hadronic Charm Decays From B Factories Henry Band University of Wisconsin 11th International Conference on.

Sep. 29, 2006 Henry Band - U. of Wisconsin 1 Hadronic Charm Decays From B Factories Henry Band University of Wisconsin 11th International Conference on.
1 Measurement of f D + via D +   + Sheldon Stone, Syracuse University  D o D o, D o  K -  + K-K- K+K+ ++  K-K- K+K+ “I charm you, by my once-commended.

1 Measurement of f D + via D +   + Sheldon Stone, Syracuse University  D o D o, D o  K -  + K-K- K+K+ ++  K-K- K+K+ “I charm you, by my once-commended.
Evidence for Narrow D s  0 and D s   0 states Jianchun Wang 05/09/03 Directly involved: Dave Cinabro Selina Li Sheldon Stone Jon Urheim Jianchun Wang.

Evidence for Narrow D s  0 and D s   0 states Jianchun Wang 05/09/03 Directly involved: Dave Cinabro Selina Li Sheldon Stone Jon Urheim Jianchun Wang.
Heavy Flavor Production at the Tevatron Jennifer Pursley The Johns Hopkins University on behalf of the CDF and D0 Collaborations Beauty 2006 - University.

Heavy Flavor Production at the Tevatron Jennifer Pursley The Johns Hopkins University on behalf of the CDF and D0 Collaborations Beauty University.
Matteo Negrini ISMD-2003, Krakow, September 5-11, 2003 Charmonium Production with Antiproton - Gas Jet Interactions at FNAL Matteo Negrini University of.

Matteo Negrini ISMD-2003, Krakow, September 5-11, 2003 Charmonium Production with Antiproton - Gas Jet Interactions at FNAL Matteo Negrini University of.
Search for B     with SemiExclusive reconstruction C.Cartaro, G. De Nardo, F. Fabozzi, L. Lista Università & INFN - Sezione di Napoli.

Search for B     with SemiExclusive reconstruction C.Cartaro, G. De Nardo, F. Fabozzi, L. Lista Università & INFN - Sezione di Napoli.
1 Search for light Higgs in Y(1S)→ gamma lepton-pairs Nasra Sultana & Tomasz Skwarnicki.

1 Search for light Higgs in Y(1S)→ gamma lepton-pairs Nasra Sultana & Tomasz Skwarnicki.
Hot Topics from BaBar Fabrizio Bianchi INFN, Torino (on behalf of the BaBar Collaboration) Direct CP Violation in (hep-ex/0407057) Observation of and search.

Hot Topics from BaBar Fabrizio Bianchi INFN, Torino (on behalf of the BaBar Collaboration) Direct CP Violation in (hep-ex/ ) Observation of and search.
16 April 2005 APS 2005 Search for exclusive two body decays of B→D s * h at Belle Luminda Kulasiri University of Cincinnati Outline Motivation Results.

16 April 2005 APS 2005 Search for exclusive two body decays of B→D s * h at Belle Luminda Kulasiri University of Cincinnati Outline Motivation Results.
First Observation of B°  D*°         Decays Sheldon Stone Jianchun Wang Syracuse University CLEO Plenary 05/11/01.

First Observation of B°  D*°         Decays Sheldon Stone Jianchun Wang Syracuse University CLEO Plenary 05/11/01.
Alex Smith – University of Minnesota Determination of |V cb | Using Moments of Inclusive B Decay Spectra BEACH04 Conference June 28-July 3, 2004 Chicago,

Alex Smith – University of Minnesota Determination of |V cb | Using Moments of Inclusive B Decay Spectra BEACH04 Conference June 28-July 3, 2004 Chicago,
Search for resonances The fingerprints of the Top Quark Jessica Levêque, University of Arizona Top Quark Mass Measurement Top Turns Ten Symposium, Fermilab,

Search for resonances The fingerprints of the Top Quark Jessica Levêque, University of Arizona Top Quark Mass Measurement Top Turns Ten Symposium, Fermilab,
First Observation of the Baryon; Properties of,,, and Baryons Andreas Warburton Cornell University CLEO Collaboration XXX th International Conference on.

First Observation of the Baryon; Properties of,,, and Baryons Andreas Warburton Cornell University CLEO Collaboration XXX th International Conference on.

Similar presentations

Ads by Google