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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Hi all:</span></div>
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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">I would like to submit the following abstract to the April APS meeting. Please let me
know if you have any comments. The deadline for submission is January 9. I do not plan to show any cross sections other than those we have already published in the Rowley et al. paper from 2021 (which are, of course, already approved by the collaboration).
This talk will focus on improvements to the analysis we have made since that work was done.</span></div>
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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">John<br>
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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Nuclear Physics with Short-Lived Beams</span></div>
<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">J.W. Price (for the CLAS Collaboration)<br>
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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"><span style="font-size:11pt;font-family:'Times New Roman';color:#000000" class="FluidPluginCopy ContentPasted0">Short-lived
beam particles in nuclear physics present problems for both the beam flux and target thickness calculations. Historically, bubble chamber experiments measured these quantities directly during datataking. While measurements of the kinematic variables were very
precise, these experiments were statistics-limited, due to rate limitations of bubble chambers. Modern large-acceptance detectors can overcome this limitation, with data rates several orders of magnitude greater than bubble chambers. The final-state particles
are either detected directly or reconstructed from their decay particles. The beam particle is not detected directly, but is inferred via a missing mass calculation. A recent study with the CLAS detector at JLab in Newport News, Virginia used a preliminary
version of this technique to measure the cross section for Lambda </span><span style="font-size:11pt;font-family:'Times New Roman';color:#000000" class="FluidPluginCopy ContentPasted0">p -> Lambda
</span><span style="font-size:11pt;font-family:'Times New Roman';color:#000000" class="FluidPluginCopy ContentPasted0">p</span><span style="font-size:11pt;font-family:'Times New Roman';color:#000000" class="FluidPluginCopy ContentPasted0">. The scattered Lambda</span><span style="font-size:11pt;font-family:'Times New Roman';color:#000000" class="FluidPluginCopy ContentPasted0">
was inferred via its decay to </span><span style="font-size:11pt;font-family:'Times New Roman';color:#000000" class="FluidPluginCopy ContentPasted0">pi-
</span><span style="font-size:11pt;font-family:'Times New Roman';color:#000000" class="FluidPluginCopy ContentPasted0">p</span><span style="font-size:11pt;font-family:'Times New Roman';color:#000000" class="FluidPluginCopy ContentPasted0">; the presence of
two protons in the final state reduced greatly the amount of data to be analyzed. Although the incident momentum range was limited, the number of events in this measurement was far greater than any previous measurement for this process. This talk will present
the motivations for the development of short-lived beams, the present status of this project with the CLAS Collaboration, and plans for future improvements to the technique.</span><br>
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
John W. Price</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Professor, CSUDH Department of Physics</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
T: (310) 243-3403 | E: jprice@csudh.edu<br>
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