Charged jet evolution and the underlying event in proton-antiproton collisions at 1.8 TeV

被引：130

作者：

Affolder, T ^{[1
]}

Akimoto, H

Akopian, A

Albrow, MG

Amaral, P

Amidei, D

Anikeev, K

Antos, J

Apollinari, G

Arisawa, T

Artikov, A

Asakawa, T

Ashmanskas, W

Azfar, F

Azzi-Bacchetta, P

Bacchetta, N

Bachacou, H

Bailey, S

de Barbaro, P

Barbaro-Galtieri, A

Barnes, VE

Barnett, BA

Baroiant, S

Barone, M

Bauer, G

Bedeschi, F

Belforte, S

Bell, WH

Bellettini, G

Bellinger, J

Benjamin, D

Bensinger, J

Beretvas, A

Berge, JP

Berryhill, J

Bhatti, A

Binkley, M

Bisello, D

Bishai, M

Blair, RE

Blocker, C

Bloom, K

Blumenfeld, B

Blusk, SR

Bocci, A

Bodek, A

Bokhari, W

Bolla, G

Bonushkin, Y

Bortoletto, D

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[2] Waseda Univ, Tokyo 169, Japan

[3] Rockefeller Univ, New York, NY 10021 USA

[4] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[5] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[6] Univ Michigan, Ann Arbor, MI 48109 USA

[7] MIT, Cambridge, MA 02139 USA

[8] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[9] Joint Inst Nucl Res, RU-141980 Dubna, Russia

[10] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan

[11] Univ Oxford, Oxford OX1 3RH, England

[12] Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[13] Harvard Univ, Cambridge, MA 02138 USA

[14] Univ Rochester, Rochester, NY 14627 USA

[15] Purdue Univ, W Lafayette, IN 47907 USA

[16] Johns Hopkins Univ, Baltimore, MD 21218 USA

[17] Univ Calif Davis, Davis, CA 95616 USA

[18] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[19] Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy

[20] Scuola Normale Super Pisa, I-56100 Pisa, Italy

[21] Univ Trieste Udine, Ist Nazl Fis Nucl, Trieste, Italy

[22] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[23] Univ Wisconsin, Madison, WI 53706 USA

[24] Duke Univ, Durham, NC 27708 USA

[25] Brandeis Univ, Waltham, MA 02254 USA

[26] Argonne Natl Lab, Argonne, IL 60439 USA

[27] Univ Penn, Philadelphia, PA 19104 USA

[28] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[29] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[30] Univ New Mexico, Albuquerque, NM 87131 USA

[31] Michigan State Univ, E Lansing, MI 48824 USA

[32] Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy

[33] Univ Illinois, Urbana, IL 61801 USA

[34] Ohio State Univ, Columbus, OH 43210 USA

[35] Univ Geneva, CH-1211 Geneva 4, Switzerland

[36] Rutgers State Univ, Piscataway, NJ 08855 USA

[37] Texas Tech Univ, Lubbock, TX 79409 USA

[38] Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada

[39] Tufts Univ, Medford, MA 02155 USA

[40] Texas A&M Univ, College Stn, TX 77843 USA

[41] Yale Univ, New Haven, CT 06520 USA

[42] Univ Florida, Gainesville, FL 32611 USA

[43] High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan

[44] Hiroshima Univ, Higashihiroshima 724, Japan

[45] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[46] Osaka City Univ, Osaka 588, Japan

[47] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea

[48] Seoul Natl Univ, Seoul 151742, South Korea

[49] Sungkyunkwan Univ, Suwon 440746, South Korea

[50] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain

来源：

PHYSICAL REVIEW D | 2002年 / 65卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.65.092002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The growth and development of "charged particle jets" produced in proton-antiproton collisions at 1.8 TeV are studied over a transverse momentum range from 0.5 GeV/c to 50 GeV/c. A variety of leading (highest transverse momentum) charged jet observables are compared with the QCD Monte Carlo models HERWIG, ISAJET, and PYTHIA. The models describe fairly well the multiplicity distribution of charged particles within the leading charged jet, the size of the leading charged jet, the radial distribution of charged particles and transverse momentum around the leading charged jet direction, and the momentum distribution of charged particles within the leading charged jet. The direction of the leading "charged particle jet" in each event is used to define three regions of eta-phi space. The "toward" region contains the leading "charged particle jet," while the "away" region, on the average, contains the away-side jet. The "transverse" region is perpendicular to the plane of the hard 2-to-2 scattering and is very sensitive to the "underlying event" component of the QCD Monte Carlo models. HERWIG, ISAJET, and PYTHIA with their default parameters do not describe correctly all the properties of the "transverse" region.

引用

页数：22

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