A new twist to the long-standing three-nucleon analyzing power puzzle

E. M. Neidel; W. Tornow; D. E. González Trotter; C. R. Howell; A. S. Crowell; R. A. Macri; R. L. Walter; G. J. Weisel; J. Esterline; H. Witała; B. J. Crowe; R. S. Pedroni; D. M. Markoff

doi:10.1016/S0370-2693(02)03106-4

A new twist to the long-standing three-nucleon analyzing power puzzle

E. M. Neidel, W. Tornow, D. E. González Trotter, C. R. Howell, A. S. Crowell, R. A. Macri, R. L. Walter, G. J. Weisel, J. Esterline, H. Witała, B. J. Crowe, R. S. Pedroni, D. M. Markoff

Division of Mathematics & Natural Sciences (Altoona)

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

New results for the neutron-deuteron analyzing power A_y(θ) at E_n = 1.2 and 1.9 MeV and their comparison to proton-deuteron data reveal a sizeable and unexpected difference which increases with decreasing center-of-mass energy. This finding calls for the theoretical treatment of a subtle electromagnetic effect presently not incorporated in rigorous three-nucleon scattering calculations, before it is justified to invoke charge-dependent three-nucleon forces and/or other new physics.

Original language	English (US)
Pages (from-to)	29-34
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	552
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(02)03106-4
State	Published - Jan 16 2003

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/S0370-2693(02)03106-4

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Neidel, E. M., Tornow, W., González Trotter, D. E., Howell, C. R., Crowell, A. S., Macri, R. A., Walter, R. L., Weisel, G. J., Esterline, J., Witała, H., Crowe, B. J., Pedroni, R. S., & Markoff, D. M. (2003). A new twist to the long-standing three-nucleon analyzing power puzzle. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 552(1-2), 29-34. https://doi.org/10.1016/S0370-2693(02)03106-4

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title = "A new twist to the long-standing three-nucleon analyzing power puzzle",

abstract = "New results for the neutron-deuteron analyzing power Ay(θ) at En = 1.2 and 1.9 MeV and their comparison to proton-deuteron data reveal a sizeable and unexpected difference which increases with decreasing center-of-mass energy. This finding calls for the theoretical treatment of a subtle electromagnetic effect presently not incorporated in rigorous three-nucleon scattering calculations, before it is justified to invoke charge-dependent three-nucleon forces and/or other new physics.",

author = "Neidel, {E. M.} and W. Tornow and {Gonz{\'a}lez Trotter}, {D. E.} and Howell, {C. R.} and Crowell, {A. S.} and Macri, {R. A.} and Walter, {R. L.} and Weisel, {G. J.} and J. Esterline and H. Wita{\l}a and Crowe, {B. J.} and Pedroni, {R. S.} and Markoff, {D. M.}",

note = "Funding Information: This work was supported in part by the US Department of Energy, Office of High-Energy and Nuclear Physics, under grant No. DE-FG02-97ER41033 and DE-FG02-97ER41042. The authors would like to thank C.R. Jackson, NC A&T State University for helping with data taking.",

year = "2003",

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doi = "10.1016/S0370-2693(02)03106-4",

language = "English (US)",

volume = "552",

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Neidel, EM, Tornow, W, González Trotter, DE, Howell, CR, Crowell, AS, Macri, RA, Walter, RL, Weisel, GJ, Esterline, J, Witała, H, Crowe, BJ, Pedroni, RS & Markoff, DM 2003, 'A new twist to the long-standing three-nucleon analyzing power puzzle', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 552, no. 1-2, pp. 29-34. https://doi.org/10.1016/S0370-2693(02)03106-4

TY - JOUR

T1 - A new twist to the long-standing three-nucleon analyzing power puzzle

AU - Neidel, E. M.

AU - Tornow, W.

AU - González Trotter, D. E.

AU - Howell, C. R.

AU - Crowell, A. S.

AU - Macri, R. A.

AU - Walter, R. L.

AU - Weisel, G. J.

AU - Esterline, J.

AU - Witała, H.

AU - Crowe, B. J.

AU - Pedroni, R. S.

AU - Markoff, D. M.

N1 - Funding Information: This work was supported in part by the US Department of Energy, Office of High-Energy and Nuclear Physics, under grant No. DE-FG02-97ER41033 and DE-FG02-97ER41042. The authors would like to thank C.R. Jackson, NC A&T State University for helping with data taking.

PY - 2003/1/16

Y1 - 2003/1/16

N2 - New results for the neutron-deuteron analyzing power Ay(θ) at En = 1.2 and 1.9 MeV and their comparison to proton-deuteron data reveal a sizeable and unexpected difference which increases with decreasing center-of-mass energy. This finding calls for the theoretical treatment of a subtle electromagnetic effect presently not incorporated in rigorous three-nucleon scattering calculations, before it is justified to invoke charge-dependent three-nucleon forces and/or other new physics.

AB - New results for the neutron-deuteron analyzing power Ay(θ) at En = 1.2 and 1.9 MeV and their comparison to proton-deuteron data reveal a sizeable and unexpected difference which increases with decreasing center-of-mass energy. This finding calls for the theoretical treatment of a subtle electromagnetic effect presently not incorporated in rigorous three-nucleon scattering calculations, before it is justified to invoke charge-dependent three-nucleon forces and/or other new physics.

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JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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A new twist to the long-standing three-nucleon analyzing power puzzle

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