Further observations on midrapidity E T distributions with aperture corrected scale

T. Abbott, L. Ahle, Y. Akiba, D. Alburger, D. Beavis, L. Birstein, M. A. Bloomer, P. D. Bond, H. C. Britt, B. Budick, C. Chasman, Z. Chen, C. Y. Chi, Y. Y. Chu, V. Cianciolo, B. A. Cole, J. B. Costales, H. J. Crawford, J. B. Cumming, R. Debbe & 70 others E. Duek, J. Engelage, S. Y. Fung, M. Gonin, L. Grodzins, S. Gushue, H. Hamagaki, O. Hansen, R. S. Hayano, S. Hayashi, S. Homma, H. Z. Huang, Y. Ikeda, I. Juricic, H. Kaneko, J. Kang, S. Katcoff, S. Kaufman, W. L. Kehoe, K. Kimura, K. Kitamura, K. Kurita, R. J. Ledoux, M. J. LeVine, Y. Miake, D. P. Morrison, R. J. Morse, B. Moskowitz, S. Nagamiya, M. N. Namboodiri, T. K. Nayak, J. Olness, C. G. Parsons, L. P. Remsberg, P. Rothschild, H. Sakurai, T. C. Sangster, M. Sarabura, R. Seto, K. Shigaki, A. Shor, R. Soltz, P. Stankus, S. G. Steadman, G. S F Stephans, T. Sugitate, T. Sung, M. Tanaka, M. J. Tannenbaum, J. Thomas, S. Tonse, M. Torikoshi, S. Ueno-Hayashi, J. H. Van Dijk, F. Videbæsk, M. Vient, P. Vincent, O. Vossnack, E. Vulgaris, V. Vutsadakis, F. Q. Wang, Y. Wang, W. A. Watson, H. E. Wegner, D. S. Woodruff, Y. D. Wu, K. Yagi, X. Yang, D. Zachary, W. A. Zajc

    Research output: Contribution to journalArticle

    Abstract

    In a previous publication [T. Abbott et al., E802 Collaboration, Phys. Rev. C 63, 064602 (2001); 64, 029901(E) (2001)], measurements of the A dependence and pseudorapidity interval (δη) dependence of midrapidity E T distributions in a half-azimuth (Δ=π) electromagnetic calorimeter were presented for p + Be, p + Au, O+Cu, Si+Au, and Au+Au collisions at the BNL-AGS. The validity of the "nuclear geometry" characterization versus δη was illustrated by plots of the E T(δη) distribution in each δη interval in units of the measured 〈E T(δη)〉 p+Au in the same δη interval for p + Au collisions. These plots, with aperture corrected scale in the physically meaningful units of number of average observed p + Au collisions, were nearly universal as a function of δη, confirming that the reaction dynamics for E T production at midrapidity at AGS energies is governed by the number of projectile participants and can be well characterized by measurements in apertures as small as Δ=π, δη=0.3. A key ingredient in these analyses is the probability P 0 for no signal to be detected in a given aperture δη for the fundamental p + Au collision. In fact the measured 〈E T(δη)〉1 p+Au is biased and the true 〈E T(δη)〉 p+Au true for the detector aperture is the measured value times 1-p 0. The issues and merits of measuring the E T(δη) distribution in units of 〈E T(δη)〉 p+Au or 〈E T(δη)〈 p-Au true in the same δη interval are presented and discussed. This method has application at RHIC, where p-p data could be used as the reference distribution for two participants. The E T distributions for B+A collisions, with E T(δη) scale normalized by 〈E T(δη)〉 p-p truein the same aperture for p-p collisions, would then be given directly in the popular unit "per participant-pair" [K. Adcox et al., PHENIX Collaboration, Phys. Rev. Lett. 86, 3500 (2001); I. G. Bearden et al., BRAHMS Collaboration, Phys. Lett. B523, 227 (2001); B. B. Back et al., PHOBOS Collaboration, Phys. Rev. C 65, 031901 (R) (2002); C. Adler et al., STAR Collaboration, Phys. Rev. Lett. 89, 202301 (2002)].

    Original languageEnglish (US)
    Article number034908
    Pages (from-to)349081-349086
    Number of pages6
    JournalPhysical Review C - Nuclear Physics
    Volume68
    Issue number3
    StatePublished - Sep 2003

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    apertures
    collisions
    intervals
    plots
    ingredients
    azimuth
    calorimeters
    projectiles
    electromagnetism
    detectors
    geometry
    energy

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Nuclear and High Energy Physics

    Cite this

    Abbott, T., Ahle, L., Akiba, Y., Alburger, D., Beavis, D., Birstein, L., ... Zajc, W. A. (2003). Further observations on midrapidity E T distributions with aperture corrected scale. Physical Review C - Nuclear Physics, 68(3), 349081-349086. [034908].

    Further observations on midrapidity E T distributions with aperture corrected scale. / Abbott, T.; Ahle, L.; Akiba, Y.; Alburger, D.; Beavis, D.; Birstein, L.; Bloomer, M. A.; Bond, P. D.; Britt, H. C.; Budick, B.; Chasman, C.; Chen, Z.; Chi, C. Y.; Chu, Y. Y.; Cianciolo, V.; Cole, B. A.; Costales, J. B.; Crawford, H. J.; Cumming, J. B.; Debbe, R.; Duek, E.; Engelage, J.; Fung, S. Y.; Gonin, M.; Grodzins, L.; Gushue, S.; Hamagaki, H.; Hansen, O.; Hayano, R. S.; Hayashi, S.; Homma, S.; Huang, H. Z.; Ikeda, Y.; Juricic, I.; Kaneko, H.; Kang, J.; Katcoff, S.; Kaufman, S.; Kehoe, W. L.; Kimura, K.; Kitamura, K.; Kurita, K.; Ledoux, R. J.; LeVine, M. J.; Miake, Y.; Morrison, D. P.; Morse, R. J.; Moskowitz, B.; Nagamiya, S.; Namboodiri, M. N.; Nayak, T. K.; Olness, J.; Parsons, C. G.; Remsberg, L. P.; Rothschild, P.; Sakurai, H.; Sangster, T. C.; Sarabura, M.; Seto, R.; Shigaki, K.; Shor, A.; Soltz, R.; Stankus, P.; Steadman, S. G.; Stephans, G. S F; Sugitate, T.; Sung, T.; Tanaka, M.; Tannenbaum, M. J.; Thomas, J.; Tonse, S.; Torikoshi, M.; Ueno-Hayashi, S.; Van Dijk, J. H.; Videbæsk, F.; Vient, M.; Vincent, P.; Vossnack, O.; Vulgaris, E.; Vutsadakis, V.; Wang, F. Q.; Wang, Y.; Watson, W. A.; Wegner, H. E.; Woodruff, D. S.; Wu, Y. D.; Yagi, K.; Yang, X.; Zachary, D.; Zajc, W. A.

    In: Physical Review C - Nuclear Physics, Vol. 68, No. 3, 034908, 09.2003, p. 349081-349086.

    Research output: Contribution to journalArticle

    Abbott, T, Ahle, L, Akiba, Y, Alburger, D, Beavis, D, Birstein, L, Bloomer, MA, Bond, PD, Britt, HC, Budick, B, Chasman, C, Chen, Z, Chi, CY, Chu, YY, Cianciolo, V, Cole, BA, Costales, JB, Crawford, HJ, Cumming, JB, Debbe, R, Duek, E, Engelage, J, Fung, SY, Gonin, M, Grodzins, L, Gushue, S, Hamagaki, H, Hansen, O, Hayano, RS, Hayashi, S, Homma, S, Huang, HZ, Ikeda, Y, Juricic, I, Kaneko, H, Kang, J, Katcoff, S, Kaufman, S, Kehoe, WL, Kimura, K, Kitamura, K, Kurita, K, Ledoux, RJ, LeVine, MJ, Miake, Y, Morrison, DP, Morse, RJ, Moskowitz, B, Nagamiya, S, Namboodiri, MN, Nayak, TK, Olness, J, Parsons, CG, Remsberg, LP, Rothschild, P, Sakurai, H, Sangster, TC, Sarabura, M, Seto, R, Shigaki, K, Shor, A, Soltz, R, Stankus, P, Steadman, SG, Stephans, GSF, Sugitate, T, Sung, T, Tanaka, M, Tannenbaum, MJ, Thomas, J, Tonse, S, Torikoshi, M, Ueno-Hayashi, S, Van Dijk, JH, Videbæsk, F, Vient, M, Vincent, P, Vossnack, O, Vulgaris, E, Vutsadakis, V, Wang, FQ, Wang, Y, Watson, WA, Wegner, HE, Woodruff, DS, Wu, YD, Yagi, K, Yang, X, Zachary, D & Zajc, WA 2003, 'Further observations on midrapidity E T distributions with aperture corrected scale', Physical Review C - Nuclear Physics, vol. 68, no. 3, 034908, pp. 349081-349086.
    Abbott T, Ahle L, Akiba Y, Alburger D, Beavis D, Birstein L et al. Further observations on midrapidity E T distributions with aperture corrected scale. Physical Review C - Nuclear Physics. 2003 Sep;68(3):349081-349086. 034908.
    Abbott, T. ; Ahle, L. ; Akiba, Y. ; Alburger, D. ; Beavis, D. ; Birstein, L. ; Bloomer, M. A. ; Bond, P. D. ; Britt, H. C. ; Budick, B. ; Chasman, C. ; Chen, Z. ; Chi, C. Y. ; Chu, Y. Y. ; Cianciolo, V. ; Cole, B. A. ; Costales, J. B. ; Crawford, H. J. ; Cumming, J. B. ; Debbe, R. ; Duek, E. ; Engelage, J. ; Fung, S. Y. ; Gonin, M. ; Grodzins, L. ; Gushue, S. ; Hamagaki, H. ; Hansen, O. ; Hayano, R. S. ; Hayashi, S. ; Homma, S. ; Huang, H. Z. ; Ikeda, Y. ; Juricic, I. ; Kaneko, H. ; Kang, J. ; Katcoff, S. ; Kaufman, S. ; Kehoe, W. L. ; Kimura, K. ; Kitamura, K. ; Kurita, K. ; Ledoux, R. J. ; LeVine, M. J. ; Miake, Y. ; Morrison, D. P. ; Morse, R. J. ; Moskowitz, B. ; Nagamiya, S. ; Namboodiri, M. N. ; Nayak, T. K. ; Olness, J. ; Parsons, C. G. ; Remsberg, L. P. ; Rothschild, P. ; Sakurai, H. ; Sangster, T. C. ; Sarabura, M. ; Seto, R. ; Shigaki, K. ; Shor, A. ; Soltz, R. ; Stankus, P. ; Steadman, S. G. ; Stephans, G. S F ; Sugitate, T. ; Sung, T. ; Tanaka, M. ; Tannenbaum, M. J. ; Thomas, J. ; Tonse, S. ; Torikoshi, M. ; Ueno-Hayashi, S. ; Van Dijk, J. H. ; Videbæsk, F. ; Vient, M. ; Vincent, P. ; Vossnack, O. ; Vulgaris, E. ; Vutsadakis, V. ; Wang, F. Q. ; Wang, Y. ; Watson, W. A. ; Wegner, H. E. ; Woodruff, D. S. ; Wu, Y. D. ; Yagi, K. ; Yang, X. ; Zachary, D. ; Zajc, W. A. / Further observations on midrapidity E T distributions with aperture corrected scale. In: Physical Review C - Nuclear Physics. 2003 ; Vol. 68, No. 3. pp. 349081-349086.
    @article{aaedce697160447da3ed6854b64bbe1a,
    title = "Further observations on midrapidity E T distributions with aperture corrected scale",
    abstract = "In a previous publication [T. Abbott et al., E802 Collaboration, Phys. Rev. C 63, 064602 (2001); 64, 029901(E) (2001)], measurements of the A dependence and pseudorapidity interval (δη) dependence of midrapidity E T distributions in a half-azimuth (Δ=π) electromagnetic calorimeter were presented for p + Be, p + Au, O+Cu, Si+Au, and Au+Au collisions at the BNL-AGS. The validity of the {"}nuclear geometry{"} characterization versus δη was illustrated by plots of the E T(δη) distribution in each δη interval in units of the measured 〈E T(δη)〉 p+Au in the same δη interval for p + Au collisions. These plots, with aperture corrected scale in the physically meaningful units of number of average observed p + Au collisions, were nearly universal as a function of δη, confirming that the reaction dynamics for E T production at midrapidity at AGS energies is governed by the number of projectile participants and can be well characterized by measurements in apertures as small as Δ=π, δη=0.3. A key ingredient in these analyses is the probability P 0 for no signal to be detected in a given aperture δη for the fundamental p + Au collision. In fact the measured 〈E T(δη)〉1 p+Au is biased and the true 〈E T(δη)〉 p+Au true for the detector aperture is the measured value times 1-p 0. The issues and merits of measuring the E T(δη) distribution in units of 〈E T(δη)〉 p+Au or 〈E T(δη)〈 p-Au true in the same δη interval are presented and discussed. This method has application at RHIC, where p-p data could be used as the reference distribution for two participants. The E T distributions for B+A collisions, with E T(δη) scale normalized by 〈E T(δη)〉 p-p truein the same aperture for p-p collisions, would then be given directly in the popular unit {"}per participant-pair{"} [K. Adcox et al., PHENIX Collaboration, Phys. Rev. Lett. 86, 3500 (2001); I. G. Bearden et al., BRAHMS Collaboration, Phys. Lett. B523, 227 (2001); B. B. Back et al., PHOBOS Collaboration, Phys. Rev. C 65, 031901 (R) (2002); C. Adler et al., STAR Collaboration, Phys. Rev. Lett. 89, 202301 (2002)].",
    author = "T. Abbott and L. Ahle and Y. Akiba and D. Alburger and D. Beavis and L. Birstein and Bloomer, {M. A.} and Bond, {P. D.} and Britt, {H. C.} and B. Budick and C. Chasman and Z. Chen and Chi, {C. Y.} and Chu, {Y. Y.} and V. Cianciolo and Cole, {B. A.} and Costales, {J. B.} and Crawford, {H. J.} and Cumming, {J. B.} and R. Debbe and E. Duek and J. Engelage and Fung, {S. Y.} and M. Gonin and L. Grodzins and S. Gushue and H. Hamagaki and O. Hansen and Hayano, {R. S.} and S. Hayashi and S. Homma and Huang, {H. Z.} and Y. Ikeda and I. Juricic and H. Kaneko and J. Kang and S. Katcoff and S. Kaufman and Kehoe, {W. L.} and K. Kimura and K. Kitamura and K. Kurita and Ledoux, {R. J.} and LeVine, {M. J.} and Y. Miake and Morrison, {D. P.} and Morse, {R. J.} and B. Moskowitz and S. Nagamiya and Namboodiri, {M. N.} and Nayak, {T. K.} and J. Olness and Parsons, {C. G.} and Remsberg, {L. P.} and P. Rothschild and H. Sakurai and Sangster, {T. C.} and M. Sarabura and R. Seto and K. Shigaki and A. Shor and R. Soltz and P. Stankus and Steadman, {S. G.} and Stephans, {G. S F} and T. Sugitate and T. Sung and M. Tanaka and Tannenbaum, {M. J.} and J. Thomas and S. Tonse and M. Torikoshi and S. Ueno-Hayashi and {Van Dijk}, {J. H.} and F. Videb{\ae}sk and M. Vient and P. Vincent and O. Vossnack and E. Vulgaris and V. Vutsadakis and Wang, {F. Q.} and Y. Wang and Watson, {W. A.} and Wegner, {H. E.} and Woodruff, {D. S.} and Wu, {Y. D.} and K. Yagi and X. Yang and D. Zachary and Zajc, {W. A.}",
    year = "2003",
    month = "9",
    language = "English (US)",
    volume = "68",
    pages = "349081--349086",
    journal = "Physical Review C - Nuclear Physics",
    issn = "0556-2813",
    publisher = "American Physical Society",
    number = "3",

    }

    TY - JOUR

    T1 - Further observations on midrapidity E T distributions with aperture corrected scale

    AU - Abbott, T.

    AU - Ahle, L.

    AU - Akiba, Y.

    AU - Alburger, D.

    AU - Beavis, D.

    AU - Birstein, L.

    AU - Bloomer, M. A.

    AU - Bond, P. D.

    AU - Britt, H. C.

    AU - Budick, B.

    AU - Chasman, C.

    AU - Chen, Z.

    AU - Chi, C. Y.

    AU - Chu, Y. Y.

    AU - Cianciolo, V.

    AU - Cole, B. A.

    AU - Costales, J. B.

    AU - Crawford, H. J.

    AU - Cumming, J. B.

    AU - Debbe, R.

    AU - Duek, E.

    AU - Engelage, J.

    AU - Fung, S. Y.

    AU - Gonin, M.

    AU - Grodzins, L.

    AU - Gushue, S.

    AU - Hamagaki, H.

    AU - Hansen, O.

    AU - Hayano, R. S.

    AU - Hayashi, S.

    AU - Homma, S.

    AU - Huang, H. Z.

    AU - Ikeda, Y.

    AU - Juricic, I.

    AU - Kaneko, H.

    AU - Kang, J.

    AU - Katcoff, S.

    AU - Kaufman, S.

    AU - Kehoe, W. L.

    AU - Kimura, K.

    AU - Kitamura, K.

    AU - Kurita, K.

    AU - Ledoux, R. J.

    AU - LeVine, M. J.

    AU - Miake, Y.

    AU - Morrison, D. P.

    AU - Morse, R. J.

    AU - Moskowitz, B.

    AU - Nagamiya, S.

    AU - Namboodiri, M. N.

    AU - Nayak, T. K.

    AU - Olness, J.

    AU - Parsons, C. G.

    AU - Remsberg, L. P.

    AU - Rothschild, P.

    AU - Sakurai, H.

    AU - Sangster, T. C.

    AU - Sarabura, M.

    AU - Seto, R.

    AU - Shigaki, K.

    AU - Shor, A.

    AU - Soltz, R.

    AU - Stankus, P.

    AU - Steadman, S. G.

    AU - Stephans, G. S F

    AU - Sugitate, T.

    AU - Sung, T.

    AU - Tanaka, M.

    AU - Tannenbaum, M. J.

    AU - Thomas, J.

    AU - Tonse, S.

    AU - Torikoshi, M.

    AU - Ueno-Hayashi, S.

    AU - Van Dijk, J. H.

    AU - Videbæsk, F.

    AU - Vient, M.

    AU - Vincent, P.

    AU - Vossnack, O.

    AU - Vulgaris, E.

    AU - Vutsadakis, V.

    AU - Wang, F. Q.

    AU - Wang, Y.

    AU - Watson, W. A.

    AU - Wegner, H. E.

    AU - Woodruff, D. S.

    AU - Wu, Y. D.

    AU - Yagi, K.

    AU - Yang, X.

    AU - Zachary, D.

    AU - Zajc, W. A.

    PY - 2003/9

    Y1 - 2003/9

    N2 - In a previous publication [T. Abbott et al., E802 Collaboration, Phys. Rev. C 63, 064602 (2001); 64, 029901(E) (2001)], measurements of the A dependence and pseudorapidity interval (δη) dependence of midrapidity E T distributions in a half-azimuth (Δ=π) electromagnetic calorimeter were presented for p + Be, p + Au, O+Cu, Si+Au, and Au+Au collisions at the BNL-AGS. The validity of the "nuclear geometry" characterization versus δη was illustrated by plots of the E T(δη) distribution in each δη interval in units of the measured 〈E T(δη)〉 p+Au in the same δη interval for p + Au collisions. These plots, with aperture corrected scale in the physically meaningful units of number of average observed p + Au collisions, were nearly universal as a function of δη, confirming that the reaction dynamics for E T production at midrapidity at AGS energies is governed by the number of projectile participants and can be well characterized by measurements in apertures as small as Δ=π, δη=0.3. A key ingredient in these analyses is the probability P 0 for no signal to be detected in a given aperture δη for the fundamental p + Au collision. In fact the measured 〈E T(δη)〉1 p+Au is biased and the true 〈E T(δη)〉 p+Au true for the detector aperture is the measured value times 1-p 0. The issues and merits of measuring the E T(δη) distribution in units of 〈E T(δη)〉 p+Au or 〈E T(δη)〈 p-Au true in the same δη interval are presented and discussed. This method has application at RHIC, where p-p data could be used as the reference distribution for two participants. The E T distributions for B+A collisions, with E T(δη) scale normalized by 〈E T(δη)〉 p-p truein the same aperture for p-p collisions, would then be given directly in the popular unit "per participant-pair" [K. Adcox et al., PHENIX Collaboration, Phys. Rev. Lett. 86, 3500 (2001); I. G. Bearden et al., BRAHMS Collaboration, Phys. Lett. B523, 227 (2001); B. B. Back et al., PHOBOS Collaboration, Phys. Rev. C 65, 031901 (R) (2002); C. Adler et al., STAR Collaboration, Phys. Rev. Lett. 89, 202301 (2002)].

    AB - In a previous publication [T. Abbott et al., E802 Collaboration, Phys. Rev. C 63, 064602 (2001); 64, 029901(E) (2001)], measurements of the A dependence and pseudorapidity interval (δη) dependence of midrapidity E T distributions in a half-azimuth (Δ=π) electromagnetic calorimeter were presented for p + Be, p + Au, O+Cu, Si+Au, and Au+Au collisions at the BNL-AGS. The validity of the "nuclear geometry" characterization versus δη was illustrated by plots of the E T(δη) distribution in each δη interval in units of the measured 〈E T(δη)〉 p+Au in the same δη interval for p + Au collisions. These plots, with aperture corrected scale in the physically meaningful units of number of average observed p + Au collisions, were nearly universal as a function of δη, confirming that the reaction dynamics for E T production at midrapidity at AGS energies is governed by the number of projectile participants and can be well characterized by measurements in apertures as small as Δ=π, δη=0.3. A key ingredient in these analyses is the probability P 0 for no signal to be detected in a given aperture δη for the fundamental p + Au collision. In fact the measured 〈E T(δη)〉1 p+Au is biased and the true 〈E T(δη)〉 p+Au true for the detector aperture is the measured value times 1-p 0. The issues and merits of measuring the E T(δη) distribution in units of 〈E T(δη)〉 p+Au or 〈E T(δη)〈 p-Au true in the same δη interval are presented and discussed. This method has application at RHIC, where p-p data could be used as the reference distribution for two participants. The E T distributions for B+A collisions, with E T(δη) scale normalized by 〈E T(δη)〉 p-p truein the same aperture for p-p collisions, would then be given directly in the popular unit "per participant-pair" [K. Adcox et al., PHENIX Collaboration, Phys. Rev. Lett. 86, 3500 (2001); I. G. Bearden et al., BRAHMS Collaboration, Phys. Lett. B523, 227 (2001); B. B. Back et al., PHOBOS Collaboration, Phys. Rev. C 65, 031901 (R) (2002); C. Adler et al., STAR Collaboration, Phys. Rev. Lett. 89, 202301 (2002)].

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    M3 - Article

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    JO - Physical Review C - Nuclear Physics

    JF - Physical Review C - Nuclear Physics

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