Measurement of the double-spin asymmetry ALL for inclusive multi-γ pair production with 200 GeV/c polarized proton beam and polarized proton target

D. L. Adams; N. Akchurin; N. I. Belikov; A. Bravar; J. Bystricky; P. Chaumette; M. D. Corcoran; J. D. Cossairt; J. Cranshaw; J. Deregel; A. A. Derevschikov; G. Durand; H. En'yo; J. Fabre; K. Fukuda; H. Funahashi; Y. Goto; O. A. Grachov; D. P. Grosnick; D. A. Hill; T. Iijima; K. Imai; Y. Itow; K. Iwatani; T. Kasprzyk; K. W. Krueger; K. Kuroda; M. Laghai; F. Lehar; A. de Lesquen; D. Lopiano; F. C. Luehring; T. Maki; S. Makino; A. Masaike; Yu A. Matulenko; A. P. Meschanin; A. Michalowicz; D. H. Miller; K. Miyake; T. Nagamine; F. Nessi-Tedaldi; M. Nessi; C. Nguyen; S. B. Nurushev; Y. Ohashi; Y. Onel; D. I. Patalakha; G. Pauletta; A. Penzo; A. L. Read; J. B. Roberts; L. van Rossum; V. L. Rykov; N. Saito; G. Salvato; P. Schiavon; J. Shepard; J. Skeens; V. L. Solovyanov; H. Spinka; R. Takashima; F. Takeutchi; N. Tamura; N. Tanaka; D. G. Underwood; A. N. Vasiliev; A. Villari; J. L. White; S. Yamashita; A. Yokosawa; T. Yoshida; A. Zanetti

doi:10.1016/0370-2693(94)00998-8

Measurement of the double-spin asymmetry A_LL for inclusive multi-γ pair production with 200 GeV/c polarized proton beam and polarized proton target

D. L. Adams, N. Akchurin, N. I. Belikov, A. Bravar, J. Bystricky, P. Chaumette, M. D. Corcoran, J. D. Cossairt, J. Cranshaw, J. Deregel, A. A. Derevschikov, G. Durand, H. En'yo, J. Fabre, K. Fukuda, H. Funahashi, Y. Goto, O. A. Grachov, D. P. Grosnick, D. A. HillT. Iijima, K. Imai, Y. Itow, K. Iwatani, T. Kasprzyk, K. W. Krueger, K. Kuroda, M. Laghai, F. Lehar, A. de Lesquen, D. Lopiano, F. C. Luehring, T. Maki, S. Makino, A. Masaike, Yu A. Matulenko, A. P. Meschanin, A. Michalowicz, D. H. Miller, K. Miyake, T. Nagamine, F. Nessi-Tedaldi, M. Nessi, C. Nguyen, S. B. Nurushev, Y. Ohashi, Y. Onel, D. I. Patalakha, G. Pauletta, A. Penzo, A. L. Read, J. B. Roberts, L. van Rossum, V. L. Rykov, N. Saito, G. Salvato, P. Schiavon, J. Shepard, J. Skeens, V. L. Solovyanov, H. Spinka, R. Takashima, F. Takeutchi, N. Tamura, N. Tanaka, D. G. Underwood, A. N. Vasiliev, A. Villari, J. L. White, S. Yamashita, A. Yokosawa, T. Yoshida, A. Zanetti

Division of Developmental Research in Education Programs

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20 Citations (Scopus)

Abstract

The invariant double-differential cross section, E₁E₂d⁶σ / dp³₁dp³₂, and the double-spin asymmetry, A_LL, for inclusive multi-γ pair production in which γ-rays came from neutral mesons were measured with a 200 GeV/c longitudinally-polarized proton beam and a longitudinally-polarized proton target. Most of the multi-γ pairs comes from two-jet type events which are sensitive to partonic interaction. The A_LL values were found to be consistent with zero. The invariant double-differential cross section for inclusive π⁰π⁰ production was also measured. These measured cross sections are consistent with LUND Monte Carlo simulations. Using the LUND Monte Carlo simulation package with the Carlitz-Kaur model of spin dependent distribution functions of valence quarks, the A_LL values have been compared with theoretical predictions of gluon polarization, ΔG/G. The results put restrictions on the size of ΔG/G in the region of 0.05 {less-than or approximate} x {less-than or approximate} 0.35.

Original language	English
Pages (from-to)	269-274
Number of pages	6
Journal	Physics Letters B
Volume	336
Issue number	2
DOIs	https://doi.org/10.1016/0370-2693(94)00998-8
Publication status	Published - 1994 Sep 22

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Adams, D. L., Akchurin, N., Belikov, N. I., Bravar, A., Bystricky, J., Chaumette, P., Corcoran, M. D., Cossairt, J. D., Cranshaw, J., Deregel, J., Derevschikov, A. A., Durand, G., En'yo, H., Fabre, J., Fukuda, K., Funahashi, H., Goto, Y., Grachov, O. A., Grosnick, D. P., ... Zanetti, A. (1994). Measurement of the double-spin asymmetry A_LL for inclusive multi-γ pair production with 200 GeV/c polarized proton beam and polarized proton target. Physics Letters B, 336(2), 269-274. https://doi.org/10.1016/0370-2693(94)00998-8

Measurement of the double-spin asymmetry A_LL for inclusive multi-γ pair production with 200 GeV/c polarized proton beam and polarized proton target. / Adams, D. L.; Akchurin, N.; Belikov, N. I.; Bravar, A.; Bystricky, J.; Chaumette, P.; Corcoran, M. D.; Cossairt, J. D.; Cranshaw, J.; Deregel, J.; Derevschikov, A. A.; Durand, G.; En'yo, H.; Fabre, J.; Fukuda, K.; Funahashi, H.; Goto, Y.; Grachov, O. A.; Grosnick, D. P.; Hill, D. A.; Iijima, T.; Imai, K.; Itow, Y.; Iwatani, K.; Kasprzyk, T.; Krueger, K. W.; Kuroda, K.; Laghai, M.; Lehar, F.; de Lesquen, A.; Lopiano, D.; Luehring, F. C.; Maki, T.; Makino, S.; Masaike, A.; Matulenko, Yu A.; Meschanin, A. P.; Michalowicz, A.; Miller, D. H.; Miyake, K.; Nagamine, T.; Nessi-Tedaldi, F.; Nessi, M.; Nguyen, C.; Nurushev, S. B.; Ohashi, Y.; Onel, Y.; Patalakha, D. I.; Pauletta, G.; Penzo, A.; Read, A. L.; Roberts, J. B.; van Rossum, L.; Rykov, V. L.; Saito, N.; Salvato, G.; Schiavon, P.; Shepard, J.; Skeens, J.; Solovyanov, V. L.; Spinka, H.; Takashima, R.; Takeutchi, F.; Tamura, N.; Tanaka, N.; Underwood, D. G.; Vasiliev, A. N.; Villari, A.; White, J. L.; Yamashita, S.; Yokosawa, A.; Yoshida, T.; Zanetti, A.

In: Physics Letters B, Vol. 336, No. 2, 22.09.1994, p. 269-274.

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

Adams, DL, Akchurin, N, Belikov, NI, Bravar, A, Bystricky, J, Chaumette, P, Corcoran, MD, Cossairt, JD, Cranshaw, J, Deregel, J, Derevschikov, AA, Durand, G, En'yo, H, Fabre, J, Fukuda, K, Funahashi, H, Goto, Y, Grachov, OA, Grosnick, DP, Hill, DA, Iijima, T, Imai, K, Itow, Y, Iwatani, K, Kasprzyk, T, Krueger, KW, Kuroda, K, Laghai, M, Lehar, F, de Lesquen, A, Lopiano, D, Luehring, FC, Maki, T, Makino, S, Masaike, A, Matulenko, YA, Meschanin, AP, Michalowicz, A, Miller, DH, Miyake, K, Nagamine, T, Nessi-Tedaldi, F, Nessi, M, Nguyen, C, Nurushev, SB, Ohashi, Y, Onel, Y, Patalakha, DI, Pauletta, G, Penzo, A, Read, AL, Roberts, JB, van Rossum, L, Rykov, VL, Saito, N, Salvato, G, Schiavon, P, Shepard, J, Skeens, J, Solovyanov, VL, Spinka, H, Takashima, R, Takeutchi, F, Tamura, N, Tanaka, N, Underwood, DG, Vasiliev, AN, Villari, A, White, JL, Yamashita, S, Yokosawa, A, Yoshida, T & Zanetti, A 1994, 'Measurement of the double-spin asymmetry A_LL for inclusive multi-γ pair production with 200 GeV/c polarized proton beam and polarized proton target', Physics Letters B, vol. 336, no. 2, pp. 269-274. https://doi.org/10.1016/0370-2693(94)00998-8

Adams, D. L. ; Akchurin, N. ; Belikov, N. I. ; Bravar, A. ; Bystricky, J. ; Chaumette, P. ; Corcoran, M. D. ; Cossairt, J. D. ; Cranshaw, J. ; Deregel, J. ; Derevschikov, A. A. ; Durand, G. ; En'yo, H. ; Fabre, J. ; Fukuda, K. ; Funahashi, H. ; Goto, Y. ; Grachov, O. A. ; Grosnick, D. P. ; Hill, D. A. ; Iijima, T. ; Imai, K. ; Itow, Y. ; Iwatani, K. ; Kasprzyk, T. ; Krueger, K. W. ; Kuroda, K. ; Laghai, M. ; Lehar, F. ; de Lesquen, A. ; Lopiano, D. ; Luehring, F. C. ; Maki, T. ; Makino, S. ; Masaike, A. ; Matulenko, Yu A. ; Meschanin, A. P. ; Michalowicz, A. ; Miller, D. H. ; Miyake, K. ; Nagamine, T. ; Nessi-Tedaldi, F. ; Nessi, M. ; Nguyen, C. ; Nurushev, S. B. ; Ohashi, Y. ; Onel, Y. ; Patalakha, D. I. ; Pauletta, G. ; Penzo, A. ; Read, A. L. ; Roberts, J. B. ; van Rossum, L. ; Rykov, V. L. ; Saito, N. ; Salvato, G. ; Schiavon, P. ; Shepard, J. ; Skeens, J. ; Solovyanov, V. L. ; Spinka, H. ; Takashima, R. ; Takeutchi, F. ; Tamura, N. ; Tanaka, N. ; Underwood, D. G. ; Vasiliev, A. N. ; Villari, A. ; White, J. L. ; Yamashita, S. ; Yokosawa, A. ; Yoshida, T. ; Zanetti, A. / Measurement of the double-spin asymmetry A_LL for inclusive multi-γ pair production with 200 GeV/c polarized proton beam and polarized proton target. In: Physics Letters B. 1994 ; Vol. 336, No. 2. pp. 269-274.

@article{8d348e7521114ceba80dfa39780a85b6,

title = "Measurement of the double-spin asymmetry ALL for inclusive multi-γ pair production with 200 GeV/c polarized proton beam and polarized proton target",

abstract = "The invariant double-differential cross section, E1E2d6σ / dp31dp32, and the double-spin asymmetry, A LL, for inclusive multi-γ pair production in which γ-rays came from neutral mesons were measured with a 200 GeV/c longitudinally-polarized proton beam and a longitudinally-polarized proton target. Most of the multi-γ pairs comes from two-jet type events which are sensitive to partonic interaction. The ALL values were found to be consistent with zero. The invariant double-differential cross section for inclusive π0π0 production was also measured. These measured cross sections are consistent with LUND Monte Carlo simulations. Using the LUND Monte Carlo simulation package with the Carlitz-Kaur model of spin dependent distribution functions of valence quarks, the ALL values have been compared with theoretical predictions of gluon polarization, ΔG/G. The results put restrictions on the size of ΔG/G in the region of 0.05 {less-than or approximate} x {less-than or approximate} 0.35.",

author = "Adams, {D. L.} and N. Akchurin and Belikov, {N. I.} and A. Bravar and J. Bystricky and P. Chaumette and Corcoran, {M. D.} and Cossairt, {J. D.} and J. Cranshaw and J. Deregel and Derevschikov, {A. A.} and G. Durand and H. En'yo and J. Fabre and K. Fukuda and H. Funahashi and Y. Goto and Grachov, {O. A.} and Grosnick, {D. P.} and Hill, {D. A.} and T. Iijima and K. Imai and Y. Itow and K. Iwatani and T. Kasprzyk and Krueger, {K. W.} and K. Kuroda and M. Laghai and F. Lehar and {de Lesquen}, A. and D. Lopiano and Luehring, {F. C.} and T. Maki and S. Makino and A. Masaike and Matulenko, {Yu A.} and Meschanin, {A. P.} and A. Michalowicz and Miller, {D. H.} and K. Miyake and T. Nagamine and F. Nessi-Tedaldi and M. Nessi and C. Nguyen and Nurushev, {S. B.} and Y. Ohashi and Y. Onel and Patalakha, {D. I.} and G. Pauletta and A. Penzo and Read, {A. L.} and Roberts, {J. B.} and {van Rossum}, L. and Rykov, {V. L.} and N. Saito and G. Salvato and P. Schiavon and J. Shepard and J. Skeens and Solovyanov, {V. L.} and H. Spinka and R. Takashima and F. Takeutchi and N. Tamura and N. Tanaka and Underwood, {D. G.} and Vasiliev, {A. N.} and A. Villari and White, {J. L.} and S. Yamashita and A. Yokosawa and T. Yoshida and A. Zanetti",

note = "Funding Information: by the Ministry of Education, Science and Culture m Japan, the USSR Ministry of Atomic Power and Industry, the US Departmento f Energy, the Commissariat a 1{\textquoteright}EnergteA tomique and the Instttut National de Physique Nucleatre et de Phystque des Particules m France, and the Istituto dt Fistca Nucleare m Italy Copyright: Copyright 2015 Elsevier B.V., All rights reserved.",

year = "1994",

month = sep,

day = "22",

doi = "10.1016/0370-2693(94)00998-8",

language = "English",

volume = "336",

pages = "269--274",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "2",

}

TY - JOUR

T1 - Measurement of the double-spin asymmetry ALL for inclusive multi-γ pair production with 200 GeV/c polarized proton beam and polarized proton target

AU - Adams, D. L.

AU - Akchurin, N.

AU - Belikov, N. I.

AU - Bravar, A.

AU - Bystricky, J.

AU - Chaumette, P.

AU - Corcoran, M. D.

AU - Cossairt, J. D.

AU - Cranshaw, J.

AU - Deregel, J.

AU - Derevschikov, A. A.

AU - Durand, G.

AU - En'yo, H.

AU - Fabre, J.

AU - Fukuda, K.

AU - Funahashi, H.

AU - Goto, Y.

AU - Grachov, O. A.

AU - Grosnick, D. P.

AU - Hill, D. A.

AU - Iijima, T.

AU - Imai, K.

AU - Itow, Y.

AU - Iwatani, K.

AU - Kasprzyk, T.

AU - Krueger, K. W.

AU - Kuroda, K.

AU - Laghai, M.

AU - Lehar, F.

AU - de Lesquen, A.

AU - Lopiano, D.

AU - Luehring, F. C.

AU - Maki, T.

AU - Makino, S.

AU - Masaike, A.

AU - Matulenko, Yu A.

AU - Meschanin, A. P.

AU - Michalowicz, A.

AU - Miller, D. H.

AU - Miyake, K.

AU - Nagamine, T.

AU - Nessi-Tedaldi, F.

AU - Nessi, M.

AU - Nguyen, C.

AU - Nurushev, S. B.

AU - Ohashi, Y.

AU - Onel, Y.

AU - Patalakha, D. I.

AU - Pauletta, G.

AU - Penzo, A.

AU - Read, A. L.

AU - Roberts, J. B.

AU - van Rossum, L.

AU - Rykov, V. L.

AU - Saito, N.

AU - Salvato, G.

AU - Schiavon, P.

AU - Shepard, J.

AU - Skeens, J.

AU - Solovyanov, V. L.

AU - Spinka, H.

AU - Takashima, R.

AU - Takeutchi, F.

AU - Tamura, N.

AU - Tanaka, N.

AU - Underwood, D. G.

AU - Vasiliev, A. N.

AU - Villari, A.

AU - White, J. L.

AU - Yamashita, S.

AU - Yokosawa, A.

AU - Yoshida, T.

AU - Zanetti, A.

N1 - Funding Information: by the Ministry of Education, Science and Culture m Japan, the USSR Ministry of Atomic Power and Industry, the US Departmento f Energy, the Commissariat a 1’EnergteA tomique and the Instttut National de Physique Nucleatre et de Phystque des Particules m France, and the Istituto dt Fistca Nucleare m Italy Copyright: Copyright 2015 Elsevier B.V., All rights reserved.

PY - 1994/9/22

Y1 - 1994/9/22

N2 - The invariant double-differential cross section, E1E2d6σ / dp31dp32, and the double-spin asymmetry, A LL, for inclusive multi-γ pair production in which γ-rays came from neutral mesons were measured with a 200 GeV/c longitudinally-polarized proton beam and a longitudinally-polarized proton target. Most of the multi-γ pairs comes from two-jet type events which are sensitive to partonic interaction. The ALL values were found to be consistent with zero. The invariant double-differential cross section for inclusive π0π0 production was also measured. These measured cross sections are consistent with LUND Monte Carlo simulations. Using the LUND Monte Carlo simulation package with the Carlitz-Kaur model of spin dependent distribution functions of valence quarks, the ALL values have been compared with theoretical predictions of gluon polarization, ΔG/G. The results put restrictions on the size of ΔG/G in the region of 0.05 {less-than or approximate} x {less-than or approximate} 0.35.

AB - The invariant double-differential cross section, E1E2d6σ / dp31dp32, and the double-spin asymmetry, A LL, for inclusive multi-γ pair production in which γ-rays came from neutral mesons were measured with a 200 GeV/c longitudinally-polarized proton beam and a longitudinally-polarized proton target. Most of the multi-γ pairs comes from two-jet type events which are sensitive to partonic interaction. The ALL values were found to be consistent with zero. The invariant double-differential cross section for inclusive π0π0 production was also measured. These measured cross sections are consistent with LUND Monte Carlo simulations. Using the LUND Monte Carlo simulation package with the Carlitz-Kaur model of spin dependent distribution functions of valence quarks, the ALL values have been compared with theoretical predictions of gluon polarization, ΔG/G. The results put restrictions on the size of ΔG/G in the region of 0.05 {less-than or approximate} x {less-than or approximate} 0.35.

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U2 - 10.1016/0370-2693(94)00998-8

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

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

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