Further observations on midrapidity ET 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. DebbeE. 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

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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 〈ET(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 ET 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 P0 for no signal to be detected in a given aperture δη for the fundamental p + Au collision. In fact the measured 〈ET(δη)〉1p+Au is biased and the true 〈ET(δη)〉p+Autrue for the detector aperture is the measured value times 1-p0. The issues and merits of measuring the ET(δη) distribution in units of 〈ET(δη)〉p+Au or 〈E T(δη)〈p-Autrue 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 ET distributions for B+A collisions, with E T(δη) scale normalized by 〈E T(δη)〉p-ptruein 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
Article number034908
Pages (from-to)349081-349086
Number of pages6
JournalPhysical Review C - Nuclear Physics
Volume68
Issue number3
Publication statusPublished - 2003 Sep

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

All Science Journal Classification (ASJC) codes

  • 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 ET distributions with aperture corrected scale. Physical Review C - Nuclear Physics, 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 ET distributions with aperture corrected scale. In: Physical Review C - Nuclear Physics. 2003 ; Vol. 68, No. 3. pp. 349081-349086.
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title = "Further observations on midrapidity ET 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 〈ET(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 ET 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 P0 for no signal to be detected in a given aperture δη for the fundamental p + Au collision. In fact the measured 〈ET(δη)〉1p+Au is biased and the true 〈ET(δη)〉p+Autrue for the detector aperture is the measured value times 1-p0. The issues and merits of measuring the ET(δη) distribution in units of 〈ET(δη)〉p+Au or 〈E T(δη)〈p-Autrue 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 ET distributions for B+A collisions, with E T(δη) scale normalized by 〈E T(δη)〉p-ptruein 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",
volume = "68",
pages = "349081--349086",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "3",

}

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 ET distributions with aperture corrected scale', Physical Review C - Nuclear Physics, vol. 68, no. 3, 034908, pp. 349081-349086.

Further observations on midrapidity ET 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

TY - JOUR

T1 - Further observations on midrapidity ET 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 〈ET(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 ET 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 P0 for no signal to be detected in a given aperture δη for the fundamental p + Au collision. In fact the measured 〈ET(δη)〉1p+Au is biased and the true 〈ET(δη)〉p+Autrue for the detector aperture is the measured value times 1-p0. The issues and merits of measuring the ET(δη) distribution in units of 〈ET(δη)〉p+Au or 〈E T(δη)〈p-Autrue 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 ET distributions for B+A collisions, with E T(δη) scale normalized by 〈E T(δη)〉p-ptruein 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 〈ET(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 ET 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 P0 for no signal to be detected in a given aperture δη for the fundamental p + Au collision. In fact the measured 〈ET(δη)〉1p+Au is biased and the true 〈ET(δη)〉p+Autrue for the detector aperture is the measured value times 1-p0. The issues and merits of measuring the ET(δη) distribution in units of 〈ET(δη)〉p+Au or 〈E T(δη)〈p-Autrue 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 ET distributions for B+A collisions, with E T(δη) scale normalized by 〈E T(δη)〉p-ptruein 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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UR - http://www.scopus.com/inward/citedby.url?scp=0344927870&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0344927870

VL - 68

SP - 349081

EP - 349086

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 3

M1 - 034908

ER -

Abbott T, Ahle L, Akiba Y, Alburger D, Beavis D, Birstein L et al. Further observations on midrapidity ET distributions with aperture corrected scale. Physical Review C - Nuclear Physics. 2003 Sep;68(3):349081-349086. 034908.