[Clas_hadron] Abstract for BLV 2017

[Michael Evan McCracken]

Hi, all,
	Sorry for the double e-mail.  Matt Bellis identified a few typos in the original abstract.  See updated below.
-m

Abstract:
We present the techniques and results from a search for ten baryon-number violating decay modes of the $\Lambda$ hyperon using the CLAS detector at Jefferson Laboratory. Nine of these decay modes result in a single meson and single lepton in the final state ($\Lambda \rightarrow m \ell$) and conserve either the sum or the difference of baryon and lepton number ($B \pm L$).  The tenth decay mode ($\Lambda \rightarrow \bar{p}\pi^+$) represents a difference in baryon number of two units and no difference in lepton number.  We observe no significant signal and set upper limits on the branching fractions of these decays in the range $(4-200)\times 10^{-7}$ at the $90\%$ confidence level.  This represents the first search for such decays of baryons with strange content.


----------------------------------------------------
Michael E McCracken, Ph.D.
Joseph A. Walker Professor of Physics
Washington & Jefferson College
Washington, PA 15301
724.223.6148
----------------------------------------------------

> On Mar 26, 2017, at 13:30, Michael McCracken <mmccracken at washjeff.edu> wrote:
> 
> Dear spectroscopists,
> 	I would like to give a contributed talk at the 2017 International Workshop on Baryon and Lepton Number Violation (BLV 2017) at Case Western Reserve University during May 15-18.  The talk will be on the previously published CLAS search for these phenomena in the decays of Lambda baryons (http://journals.aps.org/prd/abstract/10.1103/PhysRevD.92.072002 <http://journals.aps.org/prd/abstract/10.1103/PhysRevD.92.072002>).  The analysis may seem a little stale for presentation, but this is a biennial workshop.
> 	I have included title and abstract below.  I welcome any comments or suggestions.
> Best regards,
> Mike
> 
> 
> Title: 
> A search for baryon- and lepton-number violating decays of $\Lambda$ hyperons
> using the CLAS detector at Jefferson Laboratory
> 
> Abstract:
> We present the techniques and results from a search for ten baryon-number violating decay modes of the $\Lambda$ hyperon using the CLAS detector at Jefferson Laboratory. Nine of these decay modes result in a single meson and single lepton in the final state ($\Lambda \rightarrow m \ell$) and conserve either the sum or the difference of baryon and lepton number ($B \pm L$).  The tenth decay mode ($\Lambda \rightarrow \bar{p}\pi^+$) represents a difference in baryon number of two units and no difference in lepton number.  We observe no significant signal and set upper limits on the branching fractions of these decays in the range $(4-200)\times 10^{-7}$ at the $90\%$ confidence level.  The represents the first search for such decays directly involving strange quarks.
> 
> 
> 
> 	
> ----------------------------------------------------
> Michael E McCracken, Ph.D.
> Joseph A. Walker Professor of Physics
> Washington & Jefferson College
> Washington, PA 15301
> 724.223.6148
> ----------------------------------------------------
> 

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