Bose-Einstein correlations of three charged pions in hadronic Z0 decays

被引：19

作者：

Ackerstaff, K ^{[1
]}

Alexander, G

Allison, J

Altekamp, N

Anderson, KJ

Anderson, S

Arcelli, S

Asai, S

Ashby, SF

Axen, D

Azuelos, G

Ball, AH

Barberio, E

Barlow, RJ

Bartoldus, R

Batley, JR

Baumann, S

Bechtluft, J

Behnke, T

Bell, KW

Bella, G

Bentvelsen, S

Bethke, S

Betts, S

Biebel, O

Biguzzi, A

Bird, SD

Blobel, V

Bloodworth, IJ

Bobinski, M

Bock, P

Bohme, J

Boutemeur, M

Braibant, S

Bright-Thomas, P

Brown, RM

Burckhart, HJ

Burgard, C

Burgin, R

Capiluppi, P

Carnegie, RK

Carter, AA

Carter, JR

Chang, CY

Charlton, DG

Chrisman, D

Ciocca, C

Clarke, PEL

Clay, E

Cohen, I

机构：

[1] CERN, European Org Particle Phys, CH-1211 Geneva 23, Switzerland

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

[3] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy

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

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

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

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

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

[9] Carleton Univ, Ctr Res Particle Phys, Ottawa, ON K1S 5B6, Canada

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

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

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

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

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

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

[16] TH Aachen, Inst Phys 3, D-52056 Aachen, Germany

[17] UCL, London WC1E 6BT, England

[18] Univ Manchester, Schuster Lab, Dept Phys, Manchester M13 9PL, Lancs, England

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

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

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

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

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

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

[25] Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo 113, Japan

[26] Univ Tokyo, Dept Phys, Tokyo 113, Japan

[27] Kobe Univ, Kobe, Hyogo 657, Japan

[28] Brunel Univ, Inst Phys & Environm Sci, Uxbridge UB8 3PH, Middx, England

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

[30] Univ Hamburg, DESY, Inst Expt Phys 2, D-22607 Hamburg, Germany

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

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

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

[34] Duke Univ, Dept Phys, Durham, NC 27708 USA

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

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

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 1998年 / 5卷 / 02期

关键词：

D O I：

10.1007/s100520050265

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：

Bose-Einstein Correlations (BEC) of three identical charged pions were studied in 4 x 10(6) hadronic Z(0) decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. A significant genuine three-pion BEC enhancement. near threshold was observed having an emitter source radius of r(3) = 0.580 +/- 0.004 (stat.) +/- 0.029 (syst.) fm and a strength of lambda(3) = 0.504 +/- 0.010 (stat.) +/- 0.041 (syst.). The Coulomb correction was found to increase the lambda(3) value by similar to 9% and to reduce r(3) by similar to 6%. The measured lambda(3) corresponds to a value of 0.707 +/- 0.014 (stat.) +/- 0.078 (syst.) when one takes into account the three-pion sample purity. A relation between the two-pion and the three-pion source parameters is discussed.

引用

页码：239 / 248

页数：10

共 36 条

[1] OBSERVATION OF SHORT-RANGE 3-PARTICLE CORRELATIONS IN E(+)E(-) ANNIHILATIONS AT LEP ENERGIES [J].

ABREU, P ;

ADAM, W ;

ADYE, T ;

AGASI, E ;

AJINENKO, I ;

ALEKSAN, R ;

ALEKSEEV, GD ;

ALLPORT, PP ;

ALMEHED, S ;

ALVSVAAG, SJ ;

AMALDI, U ;

AMATO, S ;

ANDREAZZA, A ;

ANDRIEUX, ML ;

ANTILOGUS, P ;

APEL, WD ;

ARNOUD, Y ;

ASMAN, B ;

AUGUSTIN, JE ;

AUGUSTINUS, A ;

BAILLON, P ;

BAMBADE, P ;

BARAO, F ;

BARATE, R ;

BARBIELLINI, G ;

BARDIN, DY ;

BARKER, GJ ;

BARONCELLI, A ;

BARRING, O ;

BARRIO, JA ;

BARTL, W ;

BATES, MJ ;

BATTAGLIA, M ;

BAUBILLIER, M ;

BAUDOT, J ;

BECKS, KH ;

BEGALLI, M ;

BEILLIERE, P ;

BELOKOPYTOV, Y ;

BELOUS, K ;

BENVENUTI, AC ;

BERGGREN, M ;

BERTRAND, D ;

BIANCHI, F ;

BIGI, M ;

BILENKY, MS ;

BILLOIR, P ;

BLOCH, D ;

BLUME, M ;

BLYTH, S .

PHYSICS LETTERS B, 1995, 355 (1-2) :415-424

[2] A STUDY OF BOSE-EINSTEIN CORRELATIONS IN E+E- ANNIHILATIONS AT LEP [J].

ACTON, PD .

PHYSICS LETTERS B, 1991, 267 (01) :143-153

[3] NUCLEAR EFFECTS IN 800 GEV PROTON INTERACTIONS [J].

SHIVPURI, RK ;

GREWAL, D ;

VERMA, VK .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1993, 58 (03) :419-422

[4]

AGABABYAN NM, 1995, Z PHYS C PART FIELDS, V68, P229, DOI 10.1007/BF01566671

[5]

AGUILARBENITEZ M, 1992, Z PHYS C PART FIELDS, V54, P21, DOI 10.1007/BF01881705

[6]

AHMET K, 1991, NUCL INSTRUM METH A, V305, P275

[7]

AKESSON T, 1987, Z PHYS C PART FIELDS, V36, P517, DOI 10.1007/BF01630589

[8] MEASUREMENT OF THE Z0 LINE-SHAPE PARAMETERS AND THE ELECTROWEAK COUPLINGS OF CHARGED LEPTONS [J].

ALEXANDER, G .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1991, 52 (02) :175-207

[9] Multiplicity dependence of Bose-Einstein correlations in hadronic Z(0) decays [J].

Alexander, G ;

Allison, J ;

Altekamp, N ;

Ametewee, K ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Bartoldus, R ;

Batley, JR ;

Bechtluft, J ;

Beeston, C ;

Behnke, T ;

Bell, AN ;

Bell, KW ;

Bella, G ;

Bentvelsen, S ;

Berlich, P ;

Bethke, S ;

Biebel, O ;

Blobel, V ;

Bloodworth, IJ ;

Bloomer, JE ;

Bobinski, M ;

Bock, P ;

Bosch, HM ;

Boutemeur, M ;

Bouwens, BT ;

Braibant, S ;

Brown, RM ;

Burckhart, HJ ;

Burgard, C ;

Burgin, R ;

Capiluppi, P ;

Carnegie, RK ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlesworth, C ;

Charlton, DG ;

Chrisman, D ;

Chu, SL ;

Clarke, PEL ;

Cohen, I ;

Conboy, JE .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1996, 72 (03) :389-398

[10] A comparison of b and uds quark jets to gluon jets [J].