Polarization transfer in the H2(e→,e′p→)n reaction up to Q2=1.61(GeV/c)2

B. Hu; M. K. Jones; P. E. Ulmer; H. Arenhövel; O. K. Baker; W. Bertozzi; E. J. Brash; J. Calarco; J. P. Chen; E. Chudakov; A. Cochran; S. Dumalski; R. Ent; J. M. Finn; F. Garibaldi; S. Gilad; R. Gilman; C. Glashausser; J. Gomez; V. Gorbenko; J. O. Hansen; J. Hovebo; C. W.De Jager; S. Jeschonnek; X. Jiang; C. Keppel; A. Klein; A. Kozlov; S. Kuhn; G. Kumbartzki; M. Kuss; J. J. Lerose; M. Liang; N. Liyanage; G. J. Lolos; P. E.C. Markowitz; D. Meekins; R. Michaels; J. Mitchell; Z. Papandreou; C. F. Perdrisat; V. Punjabi; R. Roche; D. Rowntree; A. Saha; S. Strauch; L. Todor; G. Urciuoli; L. B. Weinstein; K. Wijesooriya; B. B. Wojtsekhowski; R. Woo

doi:10.1103/PhysRevC.73.064004

Polarization transfer in the H2(e→,e′p→)n reaction up to Q2=1.61(GeV/c)2

B. Hu, M. K. Jones, P. E. Ulmer, H. Arenhövel, O. K. Baker, W. Bertozzi, E. J. Brash, J. Calarco, J. P. Chen, E. Chudakov, A. Cochran, S. Dumalski, R. Ent, J. M. Finn, F. Garibaldi, S. Gilad, R. Gilman, C. Glashausser, J. Gomez, V. GorbenkoJ. O. Hansen, J. Hovebo, C. W.De Jager, S. Jeschonnek, X. Jiang, C. Keppel, A. Klein, A. Kozlov, S. Kuhn, G. Kumbartzki, M. Kuss, J. J. Lerose, M. Liang, N. Liyanage, G. J. Lolos, P. E.C. Markowitz, D. Meekins, R. Michaels, J. Mitchell, Z. Papandreou, C. F. Perdrisat, V. Punjabi, R. Roche, D. Rowntree, A. Saha, S. Strauch, L. Todor, G. Urciuoli, L. B. Weinstein, K. Wijesooriya, B. B. Wojtsekhowski, R. Woo

School of Arts and Sciences, Physics & Astronomy

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Abstract

The recoil proton polarization was measured in the H2(e→, e′p→)n reaction in Hall A of the Thomas Jefferson National Accelerator Facility. The electron kinematics were centered on the quasielastic peak (xBj1) and included three values of the squared four-momentum transfer, Q2=0.43,1.00 and 1.61 (GeV/c)2. For Q2=0.43 and 1.61 (GeV/c)2, the missing momentum, pm, was centered at zero, whereas for Q2=1.00(GeV/c)2 two values of pm were chosen: 0 and 174MeV/c. At low pm, the Q2 dependence of the longitudinal polarization, Pz′, is not well described by a state-of-the-art calculation. Further, at higher pm, a 3.5σ discrepancy was observed in the transverse polarization, Px′. Understanding the origin of these discrepancies is important to confidently extract the neutron electric form factor from the analogous H2(e→,e′n→)p experiment.

Original language	English (US)
Article number	064004
Journal	Physical Review C - Nuclear Physics
Volume	73
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.73.064004
State	Published - 2006

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevC.73.064004

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Hu, B., Jones, M. K., Ulmer, P. E., Arenhövel, H., Baker, O. K., Bertozzi, W., Brash, E. J., Calarco, J., Chen, J. P., Chudakov, E., Cochran, A., Dumalski, S., Ent, R., M. Finn, J., Garibaldi, F., Gilad, S., Gilman, R., Glashausser, C., Gomez, J., ... Woo, R. (2006). Polarization transfer in the H2(e→,e′p→)n reaction up to Q2=1.61(GeV/c)2. Physical Review C - Nuclear Physics, 73(6), [064004]. https://doi.org/10.1103/PhysRevC.73.064004

@article{eee5a6b01bd043b28b0cf1af12ae9905,

title = "Polarization transfer in the H2(e→,e′p→)n reaction up to Q2=1.61(GeV/c)2",

abstract = "The recoil proton polarization was measured in the H2(e→, e′p→)n reaction in Hall A of the Thomas Jefferson National Accelerator Facility. The electron kinematics were centered on the quasielastic peak (xBj1) and included three values of the squared four-momentum transfer, Q2=0.43,1.00 and 1.61 (GeV/c)2. For Q2=0.43 and 1.61 (GeV/c)2, the missing momentum, pm, was centered at zero, whereas for Q2=1.00(GeV/c)2 two values of pm were chosen: 0 and 174MeV/c. At low pm, the Q2 dependence of the longitudinal polarization, Pz′, is not well described by a state-of-the-art calculation. Further, at higher pm, a 3.5σ discrepancy was observed in the transverse polarization, Px′. Understanding the origin of these discrepancies is important to confidently extract the neutron electric form factor from the analogous H2(e→,e′n→)p experiment.",

author = "B. Hu and Jones, {M. K.} and Ulmer, {P. E.} and H. Arenh{\"o}vel and Baker, {O. K.} and W. Bertozzi and Brash, {E. J.} and J. Calarco and Chen, {J. P.} and E. Chudakov and A. Cochran and S. Dumalski and R. Ent and {M. Finn}, J. and F. Garibaldi and S. Gilad and R. Gilman and C. Glashausser and J. Gomez and V. Gorbenko and Hansen, {J. O.} and J. Hovebo and Jager, {C. W.De} and S. Jeschonnek and X. Jiang and C. Keppel and A. Klein and A. Kozlov and S. Kuhn and G. Kumbartzki and M. Kuss and Lerose, {J. J.} and M. Liang and N. Liyanage and Lolos, {G. J.} and Markowitz, {P. E.C.} and D. Meekins and R. Michaels and J. Mitchell and Z. Papandreou and Perdrisat, {C. F.} and V. Punjabi and R. Roche and D. Rowntree and A. Saha and S. Strauch and L. Todor and G. Urciuoli and Weinstein, {L. B.} and K. Wijesooriya and Wojtsekhowski, {B. B.} and R. Woo",

year = "2006",

doi = "10.1103/PhysRevC.73.064004",

language = "English (US)",

volume = "73",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "6",

}

Hu, B, Jones, MK, Ulmer, PE, Arenhövel, H, Baker, OK, Bertozzi, W, Brash, EJ, Calarco, J, Chen, JP, Chudakov, E, Cochran, A, Dumalski, S, Ent, R, M. Finn, J, Garibaldi, F, Gilad, S, Gilman, R, Glashausser, C, Gomez, J, Gorbenko, V, Hansen, JO, Hovebo, J, Jager, CWD, Jeschonnek, S, Jiang, X, Keppel, C, Klein, A, Kozlov, A, Kuhn, S, Kumbartzki, G, Kuss, M, Lerose, JJ, Liang, M, Liyanage, N, Lolos, GJ, Markowitz, PEC, Meekins, D, Michaels, R, Mitchell, J, Papandreou, Z, Perdrisat, CF, Punjabi, V, Roche, R, Rowntree, D, Saha, A, Strauch, S, Todor, L, Urciuoli, G, Weinstein, LB, Wijesooriya, K, Wojtsekhowski, BB & Woo, R 2006, 'Polarization transfer in the H2(e→,e′p→)n reaction up to Q2=1.61(GeV/c)2', Physical Review C - Nuclear Physics, vol. 73, no. 6, 064004. https://doi.org/10.1103/PhysRevC.73.064004

TY - JOUR

T1 - Polarization transfer in the H2(e→,e′p→)n reaction up to Q2=1.61(GeV/c)2

AU - Hu, B.

AU - Jones, M. K.

AU - Ulmer, P. E.

AU - Arenhövel, H.

AU - Baker, O. K.

AU - Bertozzi, W.

AU - Brash, E. J.

AU - Calarco, J.

AU - Chen, J. P.

AU - Chudakov, E.

AU - Cochran, A.

AU - Dumalski, S.

AU - Ent, R.

AU - M. Finn, J.

AU - Garibaldi, F.

AU - Gilad, S.

AU - Gilman, R.

AU - Glashausser, C.

AU - Gomez, J.

AU - Gorbenko, V.

AU - Hansen, J. O.

AU - Hovebo, J.

AU - Jager, C. W.De

AU - Jeschonnek, S.

AU - Jiang, X.

AU - Keppel, C.

AU - Klein, A.

AU - Kozlov, A.

AU - Kuhn, S.

AU - Kumbartzki, G.

AU - Kuss, M.

AU - Lerose, J. J.

AU - Liang, M.

AU - Liyanage, N.

AU - Lolos, G. J.

AU - Markowitz, P. E.C.

AU - Meekins, D.

AU - Michaels, R.

AU - Mitchell, J.

AU - Papandreou, Z.

AU - Perdrisat, C. F.

AU - Punjabi, V.

AU - Roche, R.

AU - Rowntree, D.

AU - Saha, A.

AU - Strauch, S.

AU - Todor, L.

AU - Urciuoli, G.

AU - Weinstein, L. B.

AU - Wijesooriya, K.

AU - Wojtsekhowski, B. B.

AU - Woo, R.

PY - 2006

Y1 - 2006

N2 - The recoil proton polarization was measured in the H2(e→, e′p→)n reaction in Hall A of the Thomas Jefferson National Accelerator Facility. The electron kinematics were centered on the quasielastic peak (xBj1) and included three values of the squared four-momentum transfer, Q2=0.43,1.00 and 1.61 (GeV/c)2. For Q2=0.43 and 1.61 (GeV/c)2, the missing momentum, pm, was centered at zero, whereas for Q2=1.00(GeV/c)2 two values of pm were chosen: 0 and 174MeV/c. At low pm, the Q2 dependence of the longitudinal polarization, Pz′, is not well described by a state-of-the-art calculation. Further, at higher pm, a 3.5σ discrepancy was observed in the transverse polarization, Px′. Understanding the origin of these discrepancies is important to confidently extract the neutron electric form factor from the analogous H2(e→,e′n→)p experiment.

AB - The recoil proton polarization was measured in the H2(e→, e′p→)n reaction in Hall A of the Thomas Jefferson National Accelerator Facility. The electron kinematics were centered on the quasielastic peak (xBj1) and included three values of the squared four-momentum transfer, Q2=0.43,1.00 and 1.61 (GeV/c)2. For Q2=0.43 and 1.61 (GeV/c)2, the missing momentum, pm, was centered at zero, whereas for Q2=1.00(GeV/c)2 two values of pm were chosen: 0 and 174MeV/c. At low pm, the Q2 dependence of the longitudinal polarization, Pz′, is not well described by a state-of-the-art calculation. Further, at higher pm, a 3.5σ discrepancy was observed in the transverse polarization, Px′. Understanding the origin of these discrepancies is important to confidently extract the neutron electric form factor from the analogous H2(e→,e′n→)p experiment.

UR - http://www.scopus.com/inward/record.url?scp=33745496561&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33745496561&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.73.064004

DO - 10.1103/PhysRevC.73.064004

M3 - Article

AN - SCOPUS:33745496561

SN - 0556-2813

VL - 73

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 6

M1 - 064004

ER -

Polarization transfer in the H2(e→,e′p→)n reaction up to Q2=1.61(GeV/c)2

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