Measurements of flavour-dependent fragmentation functions in Z0→q(q)over-bar events

被引：67

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

Böhme, J

Boutemeur, M

Braibant, S

Bright-Thomas, P

Brown, RM

Burckhart, HJ

Burgard, C

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

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

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

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

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

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

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

[9] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany

[10] Univ London Univ Coll, London WC1E 6BT, England

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[40] Lajos Kossuth Univ, Dept Expt Phys, Debrecen, Hungary

来源：

EUROPEAN PHYSICAL JOURNAL C | 1999年 / 7卷 / 03期

关键词：

D O I：

10.1007/s100520050415

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：

Fragmentation functions for charged particles in Z(0) --> q (q) over bar events have been measured Tor bottom (b), charm ic) and light (uds) quarks as well as for all flavours together. The results are based un data recorded between 1990 and 1995 using the OPAL detector at LEP. Event samples with different flavour composition were formed using reconstructed D*(+/-) mesons and secondary vertices. The xi(p) = In(1/x(p)) distributions and the position of their maxima xi(0) are also presented separately for uds, c and b quark events. The fragmentation function for b quarks is significantly softer than for uds quarks.

引用

页码：369 / 381

页数：13

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