Measurement of central exclusive π+π- production in p(p)over-bar collisions at √s=0.9 and 1.96 TeV at CDF

被引：30

作者：

Aaltonen, T. ^{[23
,24
]}

Albrow, M. G. ^{[17
]}

Amerio, S. ^{[48
,49
]}

Amidei, D. ^{[23
,24
]}

Anastassov, A. ^{[17
]}

Annovi, A. ^{[19
]}

Antos, J. ^{[13
,14
]}

Apollinari, G. ^{[17
]}

Appel, J. A. ^{[17
]}

Arisawa, T. ^{[71
]}

Artikov, A. ^{[15
]}

Asaadi, J. ^{[62
]}

Ashmanskas, W. ^{[17
]}

Auerbach, B. ^{[2
]}

Aurisano, A. ^{[62
]}

Azfar, F. ^{[47
]}

Badgett, W. ^{[17
]}

Bae, T. ^{[28
,29
,30
,31
,32
,33
,34
]}

Barbaro-Galtieri, A. ^{[35
]}

Barnes, V. E. ^{[57
]}

Barnett, B. A. ^{[26
]}

Barria, P. ^{[51
,53
]}

Bartos, P. ^{[13
,14
]}

Bauce, M. ^{[48
,49
]}

Bedeschi, F. ^{[51
]}

Behari, S. ^{[17
]}

Bellettini, G. ^{[51
,52
]}

Bellinger, J. ^{[73
]}

Benjamin, D. ^{[16
]}

Beretvas, A. ^{[17
]}

Bhatti, A. ^{[60
]}

Bland, K. R. ^{[5
]}

Blumenfeld, B. ^{[26
]}

Bocci, A. ^{[16
]}

Bodek, A. ^{[59
]}

Bortoletto, D. ^{[58
]}

Boudreau, J. ^{[57
]}

Boveia, A. ^{[12
]}

Brigliadori, L.

Bromberg, C. ^{[41
]}

Brucken, E. ^{[23
,24
]}

Budagov, J. ^{[15
]}

Budd, H. S. ^{[59
]}

Burkett, K. ^{[17
]}

Busetto, G. ^{[48
,49
]}

Bussey, P. ^{[21
]}

Butti, P. ^{[51
,52
]}

Buzatu, A. ^{[21
]}

Calamba, A. ^{[11
]}

Camarda, S. ^{[4
]}

机构：

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

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

[3] Univ Athens, GR-15771 Athens, Greece

[4] Univ Autonoma Barcelona, ICREA, Inst Fis Altes Energies, E-08193 Bellaterra, Barcelona, Spain

[5] Baylor Univ, Waco, TX 76798 USA

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

[7] Univ Bologna, I-40127 Bologna, Italy

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

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

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

[11] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

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

[13] Comenius Univ, Bratislava 84248, Slovakia

[14] Inst Expt Phys, Kosice 04001, Slovakia

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

[16] Duke Univ, Durham, NC 27708 USA

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

[18] Univ Florida, Gainesville, FL 32611 USA

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

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

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

[22] Harvard Univ, Cambridge, MA 02138 USA

[23] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland

[24] Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[25] Univ Illinois, Urbana, IL 61801 USA

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

[27] Karlsruhe Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany

[28] Kyungpook Natl Univ, Ctr High Energy Phys, Daegu 702701, South Korea

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

[30] Sungkyunkwan Univ, Suwon 440746, South Korea

[31] Korea Inst Sci & Technol Informat, Daejeon 305806, South Korea

[32] Chonnam Natl Univ, Gwangju 500757, South Korea

[33] Chonbuk Natl Univ, Jeonju 561756, South Korea

[34] Ewha Womans Univ, Seoul 120750, South Korea

[35] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[36] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[37] UCL, London WC1E 6BT, England

[38] Ctr Invest Energet Medioambient & Tecnol, E-28040 Madrid, Spain

[39] MIT, Cambridge, MA 02139 USA

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

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

[42] ITEP, Moscow 117259, Russia

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

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

[45] Okayama Univ, Okayama 7008530, Japan

[46] Osaka City Univ, Osaka 5588585, Japan

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

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

[49] Univ Padua, I-35131 Padua, Italy

[50] Univ Penn, Philadelphia, PA 19104 USA

来源：

PHYSICAL REVIEW D | 2015年 / 91卷 / 09期

基金：

加拿大自然科学与工程研究理事会; 俄罗斯基础研究基金会; 芬兰科学院; 澳大利亚研究理事会; 美国国家科学基金会; 英国科学技术设施理事会; 瑞士国家科学基金会; 新加坡国家研究基金会;

关键词：

DOUBLE POMERON EXCHANGE; MESON PAIR PRODUCTION;

D O I：

10.1103/PhysRevD.91.091101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We measure exclusive pi(+)pi(-) production in proton-antiproton collisions at center-of-mass energies root s = 0.9 and 1.96 TeV in the Collider Detector at Fermilab. We select events with two oppositely charged particles, assumed to be pions, with pseudorapidity vertical bar eta vertical bar < 1.3 and with no other particles detected in vertical bar eta vertical bar < 5.9. We require the pi(+)pi(-) system to have rapidity vertical bar y vertical bar < 1.0. The production mechanism of these events is expected to be dominated by double pomeron exchange, which constrains the quantum numbers of the central state. The data are potentially valuable for isoscalar meson spectroscopy and for understanding the pomeron in a region of transition between nonperturbative and perturbative quantum chromodynamics. The data extend up to dipion mass M(pi(+)pi(-)) = 5000 MeV/c(2) and show resonance structures attributed to f(0) and f(2)(1270) mesons. From the pi(+)pi(-) and K+K- spectra, we place upper limits on exclusive chi(c0)(3415) production.

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