Systematics of midrapidity transverse energy distributions in limited apertures from [Formula Presented] to Au+Au collisions at relativistic energies

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; 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. Videbæk; 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

doi:10.1103/PhysRevC.63.064602

Systematics of midrapidity transverse energy distributions in limited apertures from [Formula Presented] to Au+Au collisions at relativistic energies

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. Videbæk, 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 journal › Article › peer-review

Abstract

Measurements of the A dependence and pseudorapidity interval [Formula Presented] dependence of midrapidity [Formula Presented] distributions in a half-azimuth (Δφ=π) electromagnetic calorimeter are presented for [Formula Presented] O+Cu, Si+Au, and Au+Au collisions at the BNL-AGS (Alternating-Gradient Synchrotron). The shapes of the upper edges of midrapidity [Formula Presented] distributions as a function of the pseudorapidity interval δη in the range 0.3 to 1.3, roughly centered at midrapidity, are observed to vary with δη, like multiplicity—the upper edges of the distributions flatten as δη is reduced. At the typical fixed upper percentiles of [Formula Presented] distributions used for nuclear geometry characterization by centrality definition—7 percentile, 4 percentile, 2 percentile, 1 percentile, 0.5 percentile—the effect of this variation in shape on the measured projectile [Formula Presented] dependence for [Formula Presented] [Formula Presented]Au projectiles on an Au target is small for the ranges of δη and percentile examined. The [Formula Presented] distributions for [Formula Presented] and [Formula Presented] change in shape with δη; but in each δη interval the shapes of the [Formula Presented] and [Formula Presented] distributions remain indentical with each other—a striking confirmation of the absence of multiple-collision effects at midrapidity at AGS energies. The validity of the nuclear geometry characterization versus δη is illustrated by plots of the [Formula Presented] distribution in each δη interval in units of the measured [Formula Presented] in the same δη interval for [Formula Presented] collisions. These plots, in the physically meaningful units of “number of average [Formula Presented] collisions”, are nearly universal as a function of δη, confirming that the reaction dynamics for [Formula Presented] 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 Δφ=π, δη=0.3.

Original language	English
Pages (from-to)	25
Number of pages	1
Journal	Physical Review C - Nuclear Physics
Volume	63
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.63.064602
State	Published - 2001
Externally published	Yes

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10.1103/PhysRevC.63.064602

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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., ... Zajc, W. A. (2001). Systematics of midrapidity transverse energy distributions in limited apertures from [Formula Presented] to Au+Au collisions at relativistic energies. Physical Review C - Nuclear Physics, 63(6), 25. https://doi.org/10.1103/PhysRevC.63.064602

@article{abfd61fb312d42b0bc9264a74f747a6f,

title = "Systematics of midrapidity transverse energy distributions in limited apertures from [Formula Presented] to Au+Au collisions at relativistic energies",

abstract = "Measurements of the A dependence and pseudorapidity interval [Formula Presented] dependence of midrapidity [Formula Presented] distributions in a half-azimuth (Δφ=π) electromagnetic calorimeter are presented for [Formula Presented] O+Cu, Si+Au, and Au+Au collisions at the BNL-AGS (Alternating-Gradient Synchrotron). The shapes of the upper edges of midrapidity [Formula Presented] distributions as a function of the pseudorapidity interval δη in the range 0.3 to 1.3, roughly centered at midrapidity, are observed to vary with δη, like multiplicity—the upper edges of the distributions flatten as δη is reduced. At the typical fixed upper percentiles of [Formula Presented] distributions used for nuclear geometry characterization by centrality definition—7 percentile, 4 percentile, 2 percentile, 1 percentile, 0.5 percentile—the effect of this variation in shape on the measured projectile [Formula Presented] dependence for [Formula Presented] [Formula Presented]Au projectiles on an Au target is small for the ranges of δη and percentile examined. The [Formula Presented] distributions for [Formula Presented] and [Formula Presented] change in shape with δη; but in each δη interval the shapes of the [Formula Presented] and [Formula Presented] distributions remain indentical with each other—a striking confirmation of the absence of multiple-collision effects at midrapidity at AGS energies. The validity of the nuclear geometry characterization versus δη is illustrated by plots of the [Formula Presented] distribution in each δη interval in units of the measured [Formula Presented] in the same δη interval for [Formula Presented] collisions. These plots, in the physically meaningful units of “number of average [Formula Presented] collisions”, are nearly universal as a function of δη, confirming that the reaction dynamics for [Formula Presented] 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 Δφ=π, δη=0.3.",

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}k 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 = "2001",

doi = "10.1103/PhysRevC.63.064602",

language = "English",

volume = "63",

pages = "25",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

number = "6",

}

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, Videbæk, 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 2001, 'Systematics of midrapidity transverse energy distributions in limited apertures from [Formula Presented] to Au+Au collisions at relativistic energies', Physical Review C - Nuclear Physics, vol. 63, no. 6, pp. 25. https://doi.org/10.1103/PhysRevC.63.064602

TY - JOUR

T1 - Systematics of midrapidity transverse energy distributions in limited apertures from [Formula Presented] to Au+Au collisions at relativistic energies

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 - Videbæk, 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 - 2001

Y1 - 2001

N2 - Measurements of the A dependence and pseudorapidity interval [Formula Presented] dependence of midrapidity [Formula Presented] distributions in a half-azimuth (Δφ=π) electromagnetic calorimeter are presented for [Formula Presented] O+Cu, Si+Au, and Au+Au collisions at the BNL-AGS (Alternating-Gradient Synchrotron). The shapes of the upper edges of midrapidity [Formula Presented] distributions as a function of the pseudorapidity interval δη in the range 0.3 to 1.3, roughly centered at midrapidity, are observed to vary with δη, like multiplicity—the upper edges of the distributions flatten as δη is reduced. At the typical fixed upper percentiles of [Formula Presented] distributions used for nuclear geometry characterization by centrality definition—7 percentile, 4 percentile, 2 percentile, 1 percentile, 0.5 percentile—the effect of this variation in shape on the measured projectile [Formula Presented] dependence for [Formula Presented] [Formula Presented]Au projectiles on an Au target is small for the ranges of δη and percentile examined. The [Formula Presented] distributions for [Formula Presented] and [Formula Presented] change in shape with δη; but in each δη interval the shapes of the [Formula Presented] and [Formula Presented] distributions remain indentical with each other—a striking confirmation of the absence of multiple-collision effects at midrapidity at AGS energies. The validity of the nuclear geometry characterization versus δη is illustrated by plots of the [Formula Presented] distribution in each δη interval in units of the measured [Formula Presented] in the same δη interval for [Formula Presented] collisions. These plots, in the physically meaningful units of “number of average [Formula Presented] collisions”, are nearly universal as a function of δη, confirming that the reaction dynamics for [Formula Presented] 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 Δφ=π, δη=0.3.

AB - Measurements of the A dependence and pseudorapidity interval [Formula Presented] dependence of midrapidity [Formula Presented] distributions in a half-azimuth (Δφ=π) electromagnetic calorimeter are presented for [Formula Presented] O+Cu, Si+Au, and Au+Au collisions at the BNL-AGS (Alternating-Gradient Synchrotron). The shapes of the upper edges of midrapidity [Formula Presented] distributions as a function of the pseudorapidity interval δη in the range 0.3 to 1.3, roughly centered at midrapidity, are observed to vary with δη, like multiplicity—the upper edges of the distributions flatten as δη is reduced. At the typical fixed upper percentiles of [Formula Presented] distributions used for nuclear geometry characterization by centrality definition—7 percentile, 4 percentile, 2 percentile, 1 percentile, 0.5 percentile—the effect of this variation in shape on the measured projectile [Formula Presented] dependence for [Formula Presented] [Formula Presented]Au projectiles on an Au target is small for the ranges of δη and percentile examined. The [Formula Presented] distributions for [Formula Presented] and [Formula Presented] change in shape with δη; but in each δη interval the shapes of the [Formula Presented] and [Formula Presented] distributions remain indentical with each other—a striking confirmation of the absence of multiple-collision effects at midrapidity at AGS energies. The validity of the nuclear geometry characterization versus δη is illustrated by plots of the [Formula Presented] distribution in each δη interval in units of the measured [Formula Presented] in the same δη interval for [Formula Presented] collisions. These plots, in the physically meaningful units of “number of average [Formula Presented] collisions”, are nearly universal as a function of δη, confirming that the reaction dynamics for [Formula Presented] 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 Δφ=π, δη=0.3.

UR - http://www.scopus.com/inward/record.url?scp=85035273936&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.63.064602

DO - 10.1103/PhysRevC.63.064602

M3 - Article

AN - SCOPUS:85035273936

SN - 0556-2813

VL - 63

SP - 25

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 6

ER -

Systematics of midrapidity transverse energy distributions in limited apertures from [Formula Presented] to Au+Au collisions at relativistic energies

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