Evidence for the onset of color transparency in ρ0 electroproduction off nuclei

Guo, L.; Hanretty, C.; Hicks, K.; Holt, R. J.; Hyde, C. E.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jawalker, S. S.; Keller, D.; Khandaker, M.; Kheterpal, P.; Kim, A.; Kim, W.; Klein, A.; Klein, F. J.; Kubarovsky, V.; Kuhn, S. E.; Kuleshov, S. V.; Kuznetsov, V.; Laget, J. M.; Lu, H. Y.; MacGregor, I. D. J.; Mao, Y.; Markov, N.; Mayer, M.; McAndrew, J.; McKinnon, B.; Meyer, C. A.; Mineeva, T.; Mirazita, M.; Mokeev, V.; Moreno, B.; Moutarde, H.; Muneva, E.; Nadel-Turonski, P.; Ni, A.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Osipenko, M.; Ostrovidov, A. I.; Pappalardo, L.; Paremuzyan, R.; Park, K.; Park, S.; Pasyuk, E.; Anefalos Pereira, S.; Phelps, E.; Pisano, S.; Pozdniakov, S.; Price, J. W.; Procureur, S.; Protopopescu, D.; Raue, B. A.; Reimer, P. E.; Ricco, G.; Rimal, D.; Ripani, M.; Ritchie, B. G.; Rosner, G.; Rossi, P.; Sabatie, F.; Saini, M. S.; Salgado, C.; Schott, D.; Schumacher, R. A.; Seraydaryan, H.; Sharabian, Y. G.; Smith, E. S.; Smith, G. D.; Sober, D. I.; Sokhan, D.; Stepanyan, S. S.; Stepanyan, S.; Stoler, P.; Strauch, S.; Taiuti, M.; Tang, W.; Taylor, C. E.; Tedeschi, D. J.; Tkachenko, S.; Ungaro, M.; Vernarsky, B.; Vineyard, M. F.; Voskanyan, H.; Voutier, E.; Watts, D.; Weinstein, L. B.; Weygand, D. P.; Wood, M. H.; Zachariou, N.; Zhao, B.; Zhao, Z. W.

doi:10.1016/j.physletb.2012.05.019

Title: Evidence for the onset of color transparency in ρ⁰ electroproduction off nuclei

Journal Article · Fri May 11 00:00:00 EDT 2012 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2012.05.019· OSTI ID:1041310

Guo, L.; Hanretty, C.; Hicks, K.; Holt, R. J.; Hyde, C. E.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jawalker, S. S.; Keller, D.; Khandaker, M.; Kheterpal, P.; Kim, A.; Kim, W.; Klein, A.; Klein, F. J.; Kubarovsky, V.; Kuhn, S. E.; Kuleshov, S. V. more »

We have measured the nuclear transparency of the incoherent diffractive A(e,e'ρ⁰) process in ¹²C and ⁵⁶Fe targets relative to ²H using a 5 GeV electron beam. The nuclear transparency, the ratio of the produced {rho}{sup 0}'s on a nucleus relative to deuterium, which is sensitive to ρA interaction, was studied as function of the coherence length (I_c), a lifetime of the hadronic fluctuation of the virtual photon, and the four-momentum transfer squared (Q²). Thus, while the transparency for both ¹²C and ⁵⁶Fe showed no I_c dependence, a significant Q² dependence was measured, which is consistent with calculations that included the color transparency effects.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Contributing Organization:: CLAS Collaboration

Grant/Contract Number:: AC05-06OR23177; FG02-88ER40410

OSTI ID:: 1041310

Report Number(s):: JLAB-PHY-12-1504; DOE/OR/23177-2158; arXiv:1201.2735; PYLBAJ; TRN: US201211%%493

Journal Information:: Physics Letters B, Vol. 712, Issue 4-5; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 28 works

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Title: Evidence for the onset of color transparency in ρ⁰ electroproduction off nuclei