B-factories Legacy Book 1 1st Meeting, SLAC, Oct 2009

Section Editors

BaBar: Mat CharlesBelle: Roman MizukTheory: (not assigned)

Charmed baryon spectroscopy and

decays

B-factories Legacy Book MeetingSLAC, Oct 30-31

B-factories Legacy Book 2 1st Meeting, SLAC, Oct 2009

Papers (detail on next slides)BaBarPublished1) Phys.Rev.D72:052006,20052) Phys.Rev.Lett.98:012001,20073) Phys.Rev.D78:112003,20084) Phys.Rev.D77:012002,20085) Phys.Rev.D77:031101,20086) Phys.Rev.Lett.97:232001,20067) Phys.Rev.D74:011103,20068) Phys.Rev.D75:052002,20079) Phys.Rev.Lett.95:142003,2005.10) Phys.Rev.Lett.99:062001,200711) Phys.Rev.Lett.97:112001,200612) Phys.Rev.D78:034008,2008

Foreseen papers in time to beincluded in the book:•Xic’ mass & spin•Xi(1690) in Lc decays

BellePublished1) Phys.Lett.B524:33-43,2002 2) Phys.Rev.Lett.94:122002,20053) Phys.Rev.Lett.97:162001,20064) Phys.Rev.Lett.98:262001,20075) Phys.Lett.B665:9-15,20086) Phys.Lett.B672:1-5,20097) Phys.Lett.B605:237-246,2005

Foreseen papers in time to beincluded in the book :(none on radar)

Summary of papers (BaBar+Belle):PRL: 8PRD: 7PLB: 4Pending: 2

B-factories Legacy Book 3 1st Meeting, SLAC, Oct 2009

Detail on papers: SpectroscopyΛc and Σc families:Phys.Rev.D72:052006,2005 (BABAR): Λc

+ ground state massPhys.Rev.Lett.98:012001,2007 (BABAR): Λc(2880) and Λc(2940) mass, width Phys.Rev.Lett.98:262001,2007 (Belle): Spin/parity of Λc(2880); mass+width of Λc(2880) and Λc(2940) Phys.Rev.D78:112003,2008 (BABAR): Σc resonances in B− → Λc p π−

Phys.Rev.Lett.94:122002,2005 (Belle): Properties of Σc(2800)

Ξc family:Phys.Lett.B605:237-246,2005 (Belle): Masses of Ξc

0, Ξc+

Unpublished (BABAR): Mass, spin of Ξ′c0

Phys.Rev.Lett.97:162001,2006 (Belle): Ξc(2980), Ξc(3077); search for Ξcc

Ξc family (ctd)Phys.Lett.B665:9-15,2008 (Belle): Ξc(2645), Ξc(2815), Ξc(2980) masses, width of Ξc(2980)Phys.Rev.D77:012002,2008 (BABAR): Ξc(2980), Ξc(3055), Ξc(3077), Ξc(3123) propertiesPhys.Rev.D77:031101,2008 (BABAR): Possible Ξc(2930) in B− → Λc

+ Λc− K−

Ωc family:Phys.Rev.Lett.97:232001,2006 (BABAR): Ωc

*0 massPhys.Lett.B672:1-5,2009 (Belle): Masses of Ωc

0, Ωc*0

Ξcc family:Phys.Rev.D74:011103,2006 (BABAR): Search for Ξcc

B-factories Legacy Book 4 1st Meeting, SLAC, Oct 2009

Detail on papers: Decays

Weak decay BRs:Phys.Lett.B524:33-43,2002 (Belle): Weak decay BRs of Λc Phys.Rev.D75:052002,2007 (BABAR): Weak decay BRs of Λc

Phys.Rev.Lett.95:142003,2005 (BABAR): Weak decay BRs of Ξc

0 Phys.Lett.B605:237-246,2005 (Belle): Weak decay BRs of Ξc

0, Ξc+

Phys.Rev.Lett.99:062001,2007 (BABAR): Weak decay BRs of Ωc

Light baryon properties:Phys.Rev.Lett.97:112001,2006 (BABAR): Spin of Ω− Phys.Rev.D78:034008,2008 (BABAR): Spin of Ξ(1530)0

Unpublished (BABAR): Mass, width, spin of Ξ(1690)0

B-factories Legacy Book 5 1st Meeting, SLAC, Oct 2009

Section subdivision1. Spectroscopy of charmed baryons

1. Introduction1. Overview & terminology2. Quark model expectations for ground states3. Phenomenological predictions for higher states

2. The Λc and Σc families of states3. The Ξc family of states4. The Ωc family of states5. Searches for Ξcc states6. Conclusions

2. Weak decays of charmed baryons1. Introduction2. Results and discussion

1. Λc+

2. Ξc0 and Ξc

+

3. Ωc0

3. Comments on absolute branching fractions3. Applications to light baryon spectroscopy

1. Introduction and terminology2. Measuring the Ω− spin3. Properties of the Ξ(1530) and Ξ(1690)4. Conclusions

4. Outlook

Approximate expected # pages needed for whole section: unclear yet!

B-factories Legacy Book 6 1st Meeting, SLAC, Oct 2009

Inter-correlation

Several cases where papers involve charmed baryons but main thrust of analysis belongs in another section:

• Exclusive B decays to charmed baryons (→ baryonic B decays)• Inclusive momentum spectra of baryons (→ fragmentation and/or baryonic B

decays)• Λc

+ Λc− pair production with popcorn (→ fragmentation)

• Λc+ Λc

− pair production in ISR events (→ ISR? Exotics?)Section editors for baryonic B decays & fragmentation contacted.Resolution: those analysis topics will be covered elsewhere (i.e. not by us)

Subset of the above include results on charmed baryon spectroscopy / decays in same paper. In those cases, we’ll cover that part.

• Example: B− → Λc+ p π− includes results on Σc resonances.

B-factories Legacy Book 7 1st Meeting, SLAC, Oct 2009

Contributors

Confirmed (beside section editors)BaBar: Pat Burchat*Belle: Ruslan Chistov*

Un-confirmed BaBar: 2Belle: 0

* Volunteer for reading/editing/criticism

B-factories Legacy Book 8 1st Meeting, SLAC, Oct 2009

Comments

Would like to be able to say something about absolute charmed baryon branching fractions. Preliminary result from Belle, but no published results from either Belle or BABAR. (Analysis started on BABAR side but almost zero manpower.) This is worth doing!