Ruling out Color Transparency in Quasielastic ^{12}C(e,e^{'}p) up to Q^{2} of 14.2 (GeV/c)^{2}

D Bhetuwal; J Matter; H Szumila-Vance; M L Kabir; D Dutta; R Ent; D Abrams; Z Ahmed; B Aljawrneh; S Alsalmi; R Ambrose; D Androic; W Armstrong; A Asaturyan; K Assumin-Gyimah; C Ayerbe Gayoso; A Bandari; S Basnet; V Berdnikov; H Bhatt; D Biswas; W U Boeglin; P Bosted; E Brash; M H S Bukhari; H Chen; J P Chen; M Chen; E M Christy; S Covrig; K Craycraft; S Danagoulian; D Day; M Diefenthaler; M Dlamini; J Dunne; B Duran; R Evans; H Fenker; N Fomin; E Fuchey; D Gaskell; T N Gautam; F A Gonzalez; J O Hansen; F Hauenstein; A V Hernandez; T Horn; G M Huber; M K Jones; S Joosten; A Karki; C Keppel; A Khanal; P M King; E Kinney; H S Ko; M Kohl; N Lashley-Colthirst; S Li; W B Li; A H Liyanage; D Mack; S Malace; P Markowitz; D Meekins; R Michaels; A Mkrtchyan; H Mkrtchyan; S J Nazeer; S Nanda; G Niculescu; I Niculescu; D Nguyen; Nuruzzaman; B Pandey; S Park; E Pooser; A Puckett; M Rehfuss; J Reinhold; N Santiesteban; B Sawatzky; G R Smith; A Sun; V Tadevosyan; R Trotta; S A Wood; C Yero; J Zhang; Hall C Collaboration

doi:10.1103/PhysRevLett.126.082301

Ruling out Color Transparency in Quasielastic ^{12}C(e,e^{'}p) up to Q^{2} of 14.2 (GeV/c)^{2}

Phys Rev Lett. 2021 Feb 26;126(8):082301. doi: 10.1103/PhysRevLett.126.082301.

Authors

D Bhetuwal¹, J Matter², H Szumila-Vance³, M L Kabir¹, D Dutta¹, R Ent³, D Abrams², Z Ahmed⁴, B Aljawrneh⁵, S Alsalmi⁶, R Ambrose⁴, D Androic⁷, W Armstrong⁸, A Asaturyan⁹, K Assumin-Gyimah¹, C Ayerbe Gayoso^{1

10}, A Bandari¹⁰, S Basnet⁴, V Berdnikov¹¹, H Bhatt¹, D Biswas¹², W U Boeglin¹³, P Bosted¹⁰, E Brash¹⁴, M H S Bukhari¹⁵, H Chen², J P Chen³, M Chen², E M Christy¹², S Covrig³, K Craycraft¹⁶, S Danagoulian⁵, D Day², M Diefenthaler³, M Dlamini¹⁷, J Dunne¹, B Duran⁸, R Evans⁴, H Fenker³, N Fomin¹⁶, E Fuchey¹⁸, D Gaskell³, T N Gautam¹², F A Gonzalez¹⁹, J O Hansen³, F Hauenstein²⁰, A V Hernandez¹¹, T Horn¹¹, G M Huber⁴, M K Jones³, S Joosten²¹, A Karki¹, C Keppel³, A Khanal¹³, P M King¹⁷, E Kinney²², H S Ko²³, M Kohl¹², N Lashley-Colthirst¹², S Li²⁴, W B Li¹⁰, A H Liyanage¹², D Mack³, S Malace³, P Markowitz¹³, D Meekins³, R Michaels³, A Mkrtchyan⁹, H Mkrtchyan⁹, S J Nazeer¹², S Nanda¹, G Niculescu²⁵, I Niculescu²⁵, D Nguyen², Nuruzzaman²⁶, B Pandey¹², S Park¹⁹, E Pooser³, A Puckett¹⁸, M Rehfuss⁸, J Reinhold¹³, N Santiesteban²⁴, B Sawatzky³, G R Smith³, A Sun²⁷, V Tadevosyan⁹, R Trotta¹¹, S A Wood³, C Yero¹³, J Zhang¹⁹; Hall C Collaboration

Affiliations

¹ Mississippi State University, Mississippi State, Mississippi 39762, USA.
² University of Virginia, Charlottesville, Virginia 22903, USA.
³ Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.
⁴ University of Regina, Regina, Saskatchewan S4S 0A2, Canada.
⁵ North Carolina A & T State University, Greensboro, North Carolina 27411, USA.
⁶ Kent State University, Kent, Ohio 44240, USA.
⁷ University of Zagreb, Zagreb, Croatia.
⁸ Temple University, Philadelphia, Pennsylvania 19122, USA.
⁹ A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036, Armenia.
¹⁰ The College of William & Mary, Williamsburg, Virginia 23185, USA.
¹¹ Catholic University of America, Washington, DC 20064, USA.
¹² Hampton University, Hampton, Virginia 23669, USA.
¹³ Florida International University, University Park, Florida 33199, USA.
¹⁴ Christopher Newport University, Newport News, Virginia 23606, USA.
¹⁵ Jazan University, Jazan 45142, Saudi Arabia.
¹⁶ University of Tennessee, Knoxville, Tennessee 37996, USA.
¹⁷ Ohio University, Athens, Ohio 45701, USA.
¹⁸ University of Connecticut, Storrs, Connecticut 06269, USA.
¹⁹ Stony Brook University, Stony Brook, New York 11794, USA.
²⁰ Old Dominion University, Norfolk, Virginia 23529, USA.
²¹ Argonne National Laboratory, Lemont, Illinois 60439, USA.
²² University of Colorado Boulder, Boulder, Colorado 80309, USA.
²³ Institut de Physique Nucleaire, Orsay, France.
²⁴ University of New Hampshire, Durham, New Hampshire 03824, USA.
²⁵ James Madison University, Harrisonburg, Virginia 22807, USA.
²⁶ Rutgers University, New Brunswick, New Jersey 08854, USA.
²⁷ Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

PMID: 33709760
DOI: 10.1103/PhysRevLett.126.082301

Abstract

Quasielastic ^{12}C(e,e^{'}p) scattering was measured at spacelike 4-momentum transfer squared Q^{2}=8, 9.4, 11.4, and 14.2 (GeV/c)^{2}, the highest ever achieved to date. Nuclear transparency for this reaction was extracted by comparing the measured yield to that expected from a plane-wave impulse approximation calculation without any final state interactions. The measured transparency was consistent with no Q^{2} dependence, up to proton momenta of 8.5 GeV/c, ruling out the quantum chromodynamics effect of color transparency at the measured Q^{2} scales in exclusive (e,e^{'}p) reactions. These results impose strict constraints on models of color transparency for protons.