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arXiv · 2501.01582

Studying the Strangeness $D$-Term in Hall C via Exclusive $\phi$ Electroproduction

H. T. Klest·S. Joosten·H. Szumila-Vance·W. Armstrong·F. A. Flor·B. Kim·M. H. Kim·V. Klimenko·S. Lee·Z. -E. Meziani·C. Peng·N. Pilleux·P. E. Reimer·J. Xie·Z. Xu·M. Żurek·A. Hoghmrtsyan·A. Mkrtchyan·H. Mkrtchyan·V. Tadevosyan·Y. Hatta·P. Markowitz·G. Niculescu·I. Niculescu·A. Camsonne·J. -P. Chen·S. Covrig Dusa·K. Dehmelt·D. Gaskell·J. -O. Hansen·D. W. Higinbotham·D. Mack·M. McCaughan·A. Tadepelli·C. Ayerbe Gayoso·C. E. Hyde·C. Ploen·H. Atac·N. Ifat·S. Shrestha·N. Sparveris·H. Bhatt·W. Li·Z. Yin·M. Paolone·C. Paudel·N. Heinrich·G. Huber·M. Junaid·V. Kumar·A. Postuma·A. Usman·M. Elaasar·J. Datta·D. Biswas·M. Boer·K. Tezgin·S. Kay·D. Androić
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Abstract

We propose a measurement of exclusive electroproduction of $\phi$ mesons near threshold in Hall C. We will measure the |t|-dependence of the exclusive $\phi$ electroproduction cross section, which has recently been proposed as an observable sensitive to the strangeness $D$-term. The contribution of strangeness to the total $D$-term is presently unknown, with different arguments favoring $D_s$ being large, being small, or even having opposite sign from the total $D$-term. Our exploratory measurement is designed to distinguish between these hypotheses. If $D_s$ turns out to be small, $\phi$ electroproduction can be used to study the gluon $D$-term. In addition, this dataset will allow us to perform measurements of other exclusive meson final states, including the first measurement of $\eta'$ electroproduction and multi-differential measurements of $\eta$ and $\omega$ electroproduction.

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H. T. Klest, S. Joosten, H. Szumila-Vance, W. Armstrong, F. A. Flor, B. Kim, M. H. Kim, V. Klimenko, S. Lee, Z. -E. Meziani, C. Peng, N. Pilleux, P. E. Reimer, J. Xie, Z. Xu, M. Żurek, A. Hoghmrtsyan, A. Mkrtchyan, H. Mkrtchyan, V. Tadevosyan, Y. Hatta, P. Markowitz, G. Niculescu, I. Niculescu, A. Camsonne, J. -P. Chen, S. Covrig Dusa, K. Dehmelt, D. Gaskell, J. -O. Hansen, D. W. Higinbotham, D. Mack, M. McCaughan, A. Tadepelli, C. Ayerbe Gayoso, C. E. Hyde, C. Ploen, H. Atac, N. Ifat, S. Shrestha, N. Sparveris, H. Bhatt, W. Li, Z. Yin, M. Paolone, C. Paudel, N. Heinrich, G. Huber, M. Junaid, V. Kumar, A. Postuma, A. Usman, M. Elaasar, J. Datta, D. Biswas, M. Boer, K. Tezgin, S. Kay, D. Androić. 2025-01-03. Studying the Strangeness $D$-Term in Hall C via Exclusive $\phi$ Electroproduction. https://arxiv.org/abs/2501.01582

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