Bose-Einstein study of position-momentum correlations of charged pions in hadronic Z0 decays

被引：14

作者：

Abbiendi, G. ^{[1
]}

Ainsley, C.

Akesson, P. F.

Alexander, G.

Anagnostou, G.

Anderson, K. J.

Asai, S.

Axen, D.

Bailey, I.

Barberio, E.

Barillari, T.

Barlow, R. J.

Batley, R. J.

Bechtle, P.

Behnke, T.

Bell, K. W.

Bell, P. J.

Bella, G.

Bellerive, A.

Benelli, G.

Bethke, S.

Biebel, O.

Boeriu, O.

Bock, P.

Boutemeur, M.

Braibant, S.

Brown, R. M.

Burckhart, H. J.

Campana, S.

Capiluppi, P.

Carnegie, R. K.

Carter, A. A.

Carter, J. R.

Chang, C. Y.

Charlton, D. G.

Ciocca, C.

Csilling, A.

Cuffiani, M.

Dado, S.

Dallavalle, G. M.

De Roeck, A.

De Wolf, E. A.

Desch, K.

Dienes, B.

Dubbert, J.

Duchovni, E.

Duckeck, G.

Duerdoth, I. P.

Etzion, E.

Fabbri, F.

机构：

[1] Univ Bologna, Dipartmento Fis, I-40126 Bologna, Italy

[2] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

[3] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[4] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[5] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA

[6] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[7] Carleton Univ, Dept Phys, Ottawa Carleton Inst Phys, Ottawa, ON K1S 5B6, Canada

[8] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland

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

[10] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[11] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

[12] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[13] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[14] Queen Mary Univ London, London E1 4NS, England

[15] Tech Hsch Aachen, Inst Phys 3, D-52056 Aachen, Germany

[16] UCL, London WC1E 6BT, England

[17] Univ Manchester, Schuster Lab, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[18] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[19] Univ Montreal, Phys Nucl Lab, Montreal, PQ H3C 3J7, Canada

[20] Univ Oregon, Dept Phys, Eugene, OR 97403 USA

[21] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[22] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[23] Tel Aviv Univ, Dept Phys & Astron, IL-69978 Tel Aviv, Israel

[24] Kobe Univ, Kobe, Hyogo 6578501, Japan

[25] Weizmann Inst Sci, Particle Phys Dept, IL-76100 Rehovot, Israel

[26] Univ Hamburg, DESY, Inst Expt Phys, D-22607 Hamburg, Germany

[27] Univ Victoria, Dept Phys, Victoria, BC V8W 3P6, Canada

[28] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada

[29] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

[30] Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

[31] Inst Nucl Res, H-4001 Debrecen, Hungary

[32] Univ Munich, Sekt Phys, D-85748 Garching, Germany

[33] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[34] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[35] Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo 1130033, Japan

[36] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[37] TRIUMF, Vancouver, BC V6T 2A3, Canada

[38] Univ Debrecen, Dept Expt Phys, Debrecen, Hungary

[39] MPI Munchen, Munich, Germany

[40] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki, Japan

[41] Univ Antwerp, Dept Phys, B-2610 Antwerp, Belgium

来源：

EUROPEAN PHYSICAL JOURNAL C | 2007年 / 52卷 / 04期

关键词：

D O I：

10.1140/epjc/s10052-007-0443-z

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A study of Bose-Einstein correlations in pairs of identically charged pions produced in e(+)e(-) annihilations at the Z(0) peak has been performed for the first time assuming a non-static emitting source. The results are based on the high statistics data obtained with the OPAL detector at LEP. The correlation functions have been analyzed in intervals of the average pair transverse momentum and of the pair rapidity, in order to study possible correlations between the pion production points and their momenta (position momentum correlations). The Yano-Koonin and the Bertsch-Pratt parameterizations have been fitted to the measured correlation functions to estimate the geometrical parameters of the source as well as the velocity of the source elements with respect to the overall centre-of-mass frame. The source rapidity is found to scale approximately with the pair rapidity, and both the longitudinal and transverse source dimensions are found to decrease for increasing average pair transverse momenta.

引用

页码：787 / 803

页数：17

共 75 条

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