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Probing for high momentum protons in ⁴He via the ⁴He(e,e'p)X reaction

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arxiv 1905.00541 v5 pith:O5QVTN4W submitted 2019-05-02 nucl-ex

Probing for high momentum protons in ⁴He via the ⁴He(e,e'p)X reaction

S. Iqbal , F. Benmokhtar , M. Ivanov , N. See , K. Aniol , D. W. Higinbotham , C. Boyd , A. Gadsby
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S. Gilad A. Saha J.M. Udias J. S. Goodwill D. Finton A. Boyer Z. Ye P. Solvignon P. Aguilera Z. Ahmed H. Albataineh K. Allada B. Anderson D. Anez J. Annand J. Arrington T. Averett H. Baghdasaryan X. Bai A. Beck S. Beck V. Bellini A. Camsonne C. Chen J.-P. Chen K. Chirapatpimol E. Cisbani M. M. Dalton A. Daniel D. Day W. Deconinck M. Defurne D. Flay N. Fomin M. Friend S. Frullani E. Fuchey F. Garibaldi D. Gaskell R. Gilman S. Glamazdin C. Gu P. Gueye C. Hanretty J.-O. Hansen M. Hashemi Shabestari M. Huang G. Jin N. Kalantarians H. Kang A. Kelleher I. Korover J. LeRose J. Leckey R. Lindgren E. Long J. Mammei D. J. Margaziotis P. Markowitz D. Meekins Z. Meziani R. Michaels M. Mihovilovic N. Muangma C. Munoz Camacho B. Norum Nuruzzaman Nuruzzaman K. Pan S. Phillips E. Piasetzky I. Pomerantz M. Posik V. Punjabi X. Qian Y. Qiang X. Qiu P. E. Reimer A . Rakhman S. Riordan G. Ron O. Rondon-Aramayo L. Selvy A. Shahinyan R. Shneor S. Sirca K. Slifer N. Sparveris R. Subedi V. Sulkosky D. Wang J. W. Watson L. B. Weinstein B. Wojtsekhowski S. A. Wood I. Yaron X. Zhan J. Zhang Y. W. Zhang B. Zhao X. Zheng P. Zhu R. Zielinski
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Experimental cross sections for the $^4He(e,e'p)X$ reaction up to a missing momentum of 0.632 GeV/$c$ at $x_B=1.24$ and $Q^2$=2(GeV/$c$)$^2$ are reported. The data are compared to Relativistic Distorted Wave Impulse Approximation(RDWIA) calculations for $^4He(e,e'p)^3H$ channel. Significantly more events in the triton mass region are measured for $p_{m}$$>$0.45 GeV/$c$ than are predicted by the theoretical model, suggesting that the effects of initial-state multi-nucleon correlations are stronger than expected by the RDWIA model.

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