A search for narrow states in antineutron-proton total and annihilation cross sections near N̄N threshold

T. Armstrong; C. Chu; J. Clement; C. Elinon; M. Furic; K. Hartman; A. Hicks; E. Hungerford; T. Kishimoto; J. Kruk; R. Lewis; D. Lowenstein; W. Lochstet; B. Mayes; B. Moss; G. Mutchler; L. Pinsky; G. A. Smith; L. Tang; W. von Witsch; Y. Xue

doi:10.1016/0370-2693(86)90874-9

A search for narrow states in antineutron-proton total and annihilation cross sections near N̄N threshold

T. Armstrong, C. Chu, J. Clement, C. Elinon, M. Furic, K. Hartman, A. Hicks, E. Hungerford, T. Kishimoto, J. Kruk, R. Lewis, D. Lowenstein, W. Lochstet, B. Mayes, B. Moss, G. Mutchler, L. Pinsky, G. A. Smith, L. Tang, W. von WitschY. Xue

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摘要

The n̄p total and annihilation cross section have been measured from near N̄N threshold (1880 MeV) to 1940 MeV with RMS resolution ranging from 0.08 MeV (1880 MeV) to 6.7 MeV (1940 MeV). No significant narrow meson structures were seen, with 90% CL upper limits of 40-180 mb-MeV on σΓ for states with width less than our resolution. Combined with increasing unitarity bounds on σ as one approaches threshold, these limits confine widths of possible predicted states below 1900 MeV to less than ∼ 1 MeV.

原文	English
頁（從 - 到）	383-386
頁數	4
期刊	Physics Letters B
卷	175
發行號	3
DOIs	https://doi.org/10.1016/0370-2693(86)90874-9
出版狀態	Published - 1986 8月 7

All Science Journal Classification (ASJC) codes

核能與高能物理

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10.1016/0370-2693(86)90874-9

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Armstrong, T., Chu, C., Clement, J., Elinon, C., Furic, M., Hartman, K., Hicks, A., Hungerford, E., Kishimoto, T., Kruk, J., Lewis, R., Lowenstein, D., Lochstet, W., Mayes, B., Moss, B., Mutchler, G., Pinsky, L., Smith, G. A., Tang, L., ... Xue, Y. (1986). A search for narrow states in antineutron-proton total and annihilation cross sections near N̄N threshold. Physics Letters B, 175(3), 383-386. https://doi.org/10.1016/0370-2693(86)90874-9

@article{7721fe10fa824ca5882b515c42b052b2,

title = "A search for narrow states in antineutron-proton total and annihilation cross sections near {\=N}N threshold",

abstract = "The {\=n}p total and annihilation cross section have been measured from near {\=N}N threshold (1880 MeV) to 1940 MeV with RMS resolution ranging from 0.08 MeV (1880 MeV) to 6.7 MeV (1940 MeV). No significant narrow meson structures were seen, with 90% CL upper limits of 40-180 mb-MeV on σΓ for states with width less than our resolution. Combined with increasing unitarity bounds on σ as one approaches threshold, these limits confine widths of possible predicted states below 1900 MeV to less than ∼ 1 MeV.",

author = "T. Armstrong and C. Chu and J. Clement and C. Elinon and M. Furic and K. Hartman and A. Hicks and E. Hungerford and T. Kishimoto and J. Kruk and R. Lewis and D. Lowenstein and W. Lochstet and B. Mayes and B. Moss and G. Mutchler and L. Pinsky and Smith, {G. A.} and L. Tang and {von Witsch}, W. and Y. Xue",

note = "Funding Information: Work supposed by ~,he US Depa~ment of Energy. 2 Work supposed in part by the US Depa~ment of Energy, Work supported in part by the US Nadona! Science Foundation.",

year = "1986",

month = aug,

day = "7",

doi = "10.1016/0370-2693(86)90874-9",

language = "English",

volume = "175",

pages = "383--386",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "3",

}

Armstrong, T, Chu, C, Clement, J, Elinon, C, Furic, M, Hartman, K, Hicks, A, Hungerford, E, Kishimoto, T, Kruk, J, Lewis, R, Lowenstein, D, Lochstet, W, Mayes, B, Moss, B, Mutchler, G, Pinsky, L, Smith, GA, Tang, L, von Witsch, W & Xue, Y 1986, 'A search for narrow states in antineutron-proton total and annihilation cross sections near N̄N threshold', Physics Letters B, 卷 175, 編號 3, 頁 383-386. https://doi.org/10.1016/0370-2693(86)90874-9

TY - JOUR

T1 - A search for narrow states in antineutron-proton total and annihilation cross sections near N̄N threshold

AU - Armstrong, T.

AU - Chu, C.

AU - Clement, J.

AU - Elinon, C.

AU - Furic, M.

AU - Hartman, K.

AU - Hicks, A.

AU - Hungerford, E.

AU - Kishimoto, T.

AU - Kruk, J.

AU - Lewis, R.

AU - Lowenstein, D.

AU - Lochstet, W.

AU - Mayes, B.

AU - Moss, B.

AU - Mutchler, G.

AU - Pinsky, L.

AU - Smith, G. A.

AU - Tang, L.

AU - von Witsch, W.

AU - Xue, Y.

N1 - Funding Information: Work supposed by ~,he US Depa~ment of Energy. 2 Work supposed in part by the US Depa~ment of Energy, Work supported in part by the US Nadona! Science Foundation.

PY - 1986/8/7

Y1 - 1986/8/7

N2 - The n̄p total and annihilation cross section have been measured from near N̄N threshold (1880 MeV) to 1940 MeV with RMS resolution ranging from 0.08 MeV (1880 MeV) to 6.7 MeV (1940 MeV). No significant narrow meson structures were seen, with 90% CL upper limits of 40-180 mb-MeV on σΓ for states with width less than our resolution. Combined with increasing unitarity bounds on σ as one approaches threshold, these limits confine widths of possible predicted states below 1900 MeV to less than ∼ 1 MeV.

AB - The n̄p total and annihilation cross section have been measured from near N̄N threshold (1880 MeV) to 1940 MeV with RMS resolution ranging from 0.08 MeV (1880 MeV) to 6.7 MeV (1940 MeV). No significant narrow meson structures were seen, with 90% CL upper limits of 40-180 mb-MeV on σΓ for states with width less than our resolution. Combined with increasing unitarity bounds on σ as one approaches threshold, these limits confine widths of possible predicted states below 1900 MeV to less than ∼ 1 MeV.

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UR - http://www.scopus.com/inward/citedby.url?scp=0042791676&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(86)90874-9

DO - 10.1016/0370-2693(86)90874-9

M3 - Article

AN - SCOPUS:0042791676

VL - 175

SP - 383

EP - 386

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

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

SN - 0370-2693

IS - 3

ER -

A search for narrow states in antineutron-proton total and annihilation cross sections near N̄N threshold

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