Measurement of b-quark fragmentation fractions in p(p)over-bar collisions at √s=1.8 TeV

被引：32

作者：

Affolder, T ^{[1
]}

Akimoto, H

Akopian, A

Albrow, MG

Amaral, P

Amendolia, SR

Amidei, D

Antos, J

Apollinari, G

Arisawa, T

Asakawa, T

Ashmanskas, W

Atac, M

Azzi-Bacchetta, P

Bacchetta, N

Bailey, MW

Bailey, S

de Barbaro, P

Barbaro-Galtieri, A

Barnes, VE

Barnett, BA

Barone, M

Bauer, G

Bedeschi, F

Belforte, S

Bellettini, G

Bellinger, J

Benjamin, D

Bensinger, J

Beretvas, A

Berge, JP

Berryhill, J

Bertolucci, S

Bevensee, B

Bhatti, A

Bigongiari, C

Binkley, M

Bisello, D

Blair, RE

Blocker, C

Bloom, K

Blumenfeld, B

Blusk, BS

Bocci, A

Bodek, A

Bokhari, W

Bolla, G

Bonushkin, Y

Bortoletto, D

Boudreau, J

机构：

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

[2] MIT, Cambridge, MA 02139 USA

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

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

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

[6] Brandeis Univ, Waltham, MA 02254 USA

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

[8] Univ Cantabria, Inst Fis Cantabria, Santander 39005, Spain

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

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

[11] Duke Univ, Durham, NC 27708 USA

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

[13] Univ Florida, Gainesville, FL 32611 USA

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

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

[16] Harvard Univ, Cambridge, MA 02138 USA

[17] Hiroshima Univ, Higashihiroshima 724, Japan

[18] Univ Illinois, Urbana, IL 61801 USA

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

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

[21] Kyungpook Natl Univ, Korean Hadron Collider Lab, Taegu 702701, South Korea

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

[23] Sungkyunkwan Univ, Suwon 440746, South Korea

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

[25] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada

[26] Univ Toronto, Toronto, ON M5S 1A7, Canada

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

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

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

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

[31] Osaka City Univ, Osaka 588, Japan

[32] Univ Padua, Ist Nazl Fis Nucl, Sezione Padova, I-35131 Padua, Italy

[33] Univ Penn, Philadelphia, PA 19104 USA

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

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

[36] Univ Pittsburgh, Pittsburgh, PA 15260 USA

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

[38] Univ Rochester, Rochester, NY 14627 USA

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

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

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

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

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

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

[45] Tufts Univ, Medford, MA 02155 USA

[46] Waseda Univ, Tokyo 169, Japan

[47] Univ Wisconsin, Madison, WI 53706 USA

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

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.84.1663

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the production of B hadrons in 1.8-TeV <p(p)over bar> collisions. We present measurements of the fragmentation fractions, f(u), f(d), f(s), and f(baryon), of produced b quarks that yield B+, B-0, B-s(0), and <(Lambda)over bar(b)(0)> hadrons. Reconstruction of five electron-charm final states yields f(s)/(f(u) + f(d)) = 0.213 +/- 0.068 and f(baryon)/(f(u) + f(d)) = 0.118 +/- 0.042, assuming f(u) = f(d). If all B hadrons produced in <p(p)over bar> collisions cascade to one of these four hadrons, we determine f(u) = f(d) = 0.375 +/- 0.023, f(s) = 0.160 +/- 0.044, and f(baryon) = 0.090 +/- 0.029. If we do not assume f(u) = f(d), we find f(d)/f(u) = 0.84 +/- 0.16.

引用

页码：1663 / 1668

页数：6

共 22 条

[1] NEW PI(+) LIFETIME MEASUREMENT [J].

NUMAO, T ;

MACDONALD, JA ;

MARSHALL, JA ;

MARSHALL, GM ;

OLIN, A .

PHYSICAL REVIEW D, 1995, 52 (09) :4855-4859

[2] THE CDF DETECTOR - AN OVERVIEW [J].

ABE, F ;

AMIDEI, D ;

APOLLINARI, G ;

ASCOLI, G ;

ATAC, M ;

AUCHINCLOSS, P ;

BADEN, AR ;

BARBAROGALTIERI, A ;

BARNES, VE ;

BARSOTTI, E ;

BEDESCHI, F ;

BELFORTE, S ;

BELLETTINI, G ;

BELLINGER, J ;

BENSINGER, J ;

BERETVAS, A ;

BERGE, P ;

BERTOLUCCI, S ;

BHADRA, S ;

BINKLEY, M ;

BLAIR, R ;

BLOCKER, C ;

BOFILL, J ;

BOOTH, AW ;

BRANDENBURG, G ;

BRENNER, A ;

BROWN, D ;

BYON, A ;

BYRUM, KL ;

CAMPBELL, M ;

CAREY, R ;

CARITHERS, W ;

CARLSMITH, D ;

CARROLL, JT ;

CASHMORE, R ;

CERVELLI, F ;

CHADWICK, K ;

CHAPIN, T ;

CHIARELLI, G ;

CHINOWSKY, W ;

CIHANGIR, S ;

CLINE, D ;

CONNOR, D ;

CONTRERAS, M ;

COOPER, J ;

CORDELLI, M ;

CURATOLO, M ;

DAY, C ;

DELFABBRO, R ;

DELLORSO, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1988, 271 (03) :387-403

[3]

Abe F, 1999, PHYS REV D, V60, DOI 10.1103/PhysRevD.60.051101

[4] INVESTIGATIONS INTO THE ORIGIN OF THE SPURIOUS 17 KEV NEUTRINO SIGNAL OBSERVED IN S-35 BETA-DECAY [J].

BOWLER, MG ;

JELLEY, NA .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1995, 68 (03) :391-413

[5] CHARGE-EXCHANGE (P)OVER-BAR-P-](N)OVER-BAR-N DIFFERENTIAL CROSS-SECTIONS BETWEEN 546 AND 1287 MEV/C [J].

AHMIDOUCH, A ;

HEER, E ;

HESS, R ;

LECHANOINELELUC, C ;

MASCARINI, C ;

RAPIN, D ;

BIRSA, R ;

BRADAMANTE, F ;

BRESSAN, A ;

DALLATORRECOLAUTTI, S ;

GIORGI, M ;

LAMANNA, M ;

MARTIN, A ;

PENZO, A ;

SCHIAVON, P ;

TESSAROTTO, F ;

MACCIOTTA, MP ;

MASONI, A ;

PUDDU, G ;

SERCI, S ;

ARVIEUX, J ;

BERTINI, R ;

KUNNE, RA ;

CATZ, H ;

FAIVRE, JC ;

PERROTKUNNE, F ;

AGNELLO, M ;

IAZZI, F ;

MINETTI, B ;

BRESSANI, T ;

CHIAVASSA, E ;

DEMARCO, N ;

MUSSO, A ;

PICCOTTI, A .

PHYSICS LETTERS B, 1995, 364 (02) :116-120

[6] THE SILICON VERTEX DETECTOR OF THE COLLIDER DETECTOR AT FERMILAB [J].

AMIDEI, D ;

AZZI, P ;

BACCHETTA, N ;

BAILEY, MW ;

BARNETT, B ;

BEDESCHI, F ;

BISELLO, D ;

BOLOGNESI, V ;

BOSWELL, C ;

BUSETTO, G ;

CARITHERS, WC ;

CARTER, H ;

CASTRO, A ;

DELLAGNELLO, S ;

DERWENT, PF ;

DUCAR, R ;

DUNN, A ;

ELY, R ;

FLAUGHER, B ;

GALEOTTI, S ;

BARBAROGALTIERI, A ;

GARFINKEL, AF ;

HABER, C ;

HOLLAND, S ;

HRYCYK, M ;

HERRUP, D ;

HUGHES, R ;

KLEINFELDER, S ;

LORETI, M ;

MARIOTTI, M ;

MATTHEWS, J ;

MENZIONE, A ;

MERRICK, T ;

NELSON, C ;

PESCARA, L ;

PRODUIT, N ;

PUNZI, G ;

RAFFAELLI, F ;

RISTORI, L ;

SCHNEIDER, O ;

SEGLER, S ;

SHAPIRO, MD ;

SHAW, NM ;

SHAW, T ;

SKARHA, J ;

SNIDER, FD ;

SONG, TY ;

SPIES, A ;

TIPTON, P ;

TKACZYK, S .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 350 (1-2) :73-130

[7]

AVERY P, 1985, CSN212 CLEO

[8] SVX', THE NEW CDF SILICON VERTEX DETECTOR [J].

AZZI, P ;

BACCHETTA, N ;

BARNETT, BA ;

BAILEY, M ;

BEDESCHI, F ;

BISELLO, D ;

CAMMERATA, JD ;

CARITHERS, WC ;

CHAO, HY ;

CHIOU, CN ;

CIHANGIR, S ;

ELY, RP ;

ENGELS, E ;

FRANCESCHI, A ;

BARBAROGALTIERI, A ;

GUERRA, M ;

GARFINKEL, AF ;

GILLESPIE, G ;

GLENZINSKI, D ;

GONZALEZ, H ;

GONZALEZ, S ;

GRIMM, C ;

HABER, C ;

HAWKE, T ;

HRYCYK, M ;

INCANDELA, J ;

KAJFASZ, E ;

KLEIN, R ;

KLEINFELDER, S ;

KRUSE, M ;

LUNDBERG, B ;

MANDO, F ;

MATTHEWS, J ;

MENZIONE, A ;

NELSON, C ;

PACCAGNELLA, A ;

PAULINI, M ;

PETERS, MD ;

PRATICELLI, N ;

RAFFAELLI, F ;

RATZMANN, P ;

SCHINDLER, A ;

SCIACCA, FG ;

SCOTT, L ;

SHAPIRO, MD ;

SHAW, NM ;

SHAW, T ;

SHEPARD, P ;

SINGH, P ;

SKARHA, JE .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1995, 360 (1-2) :137-140

[9] Measurement of the b baryon lifetime and branching fractions in Z decays [J].

Barate, R ;

Buskulic, D ;

Decamp, D ;

Ghez, P ;

Goy, G ;

Lees, JP ;

Lucotte, A ;

Minard, MN ;

Nief, JY ;

Pietrzyk, B ;

Casado, MP ;

Chmeissani, M ;

Comas, P ;

Crespo, JM ;

Delfino, M ;

Fernandez, E ;

Fernandez-Bosman, M ;

Garrido, L ;

Juste, A ;

Martinez, M ;

Merino, G ;

Miquel, R ;

Mir, LM ;

Padilla, C ;

Park, IC ;

Pascual, A ;

Perlas, JA ;

Riu, I ;

Sanchez, F ;

Colaleo, A ;

Creanza, D ;

de Palma, M ;

Gelao, G ;

Iaselli, G ;

Maggi, G ;

Maggi, M ;

Marinelli, N ;

Nuzzo, S ;

Ranieri, A ;

Raso, G ;

Ruggieri, F ;

Selvaggi, G ;

Silvestris, L ;

Tempesta, P ;

Tricomi, A ;

Zito, G ;

Huang, X ;

Lin, J ;

Ouyang, Q ;

Wang, T .

EUROPEAN PHYSICAL JOURNAL C, 1998, 2 (02) :197-211

[10] MEASUREMENT OF THE (B)OVER-BAR-]D-ASTERISK-L-(NU)OVER-BAR BRANCHING FRACTIONS AND VERTICAL-BAR-V-CB-VERTICAL-BAR [J].

BARISH, B ;

CHADHA, M ;

CHAN, S ;

COWEN, DF ;

EIGEN, G ;

MILLER, JS ;

OGRADY, C ;

URHEIM, J ;

WEINSTEIN, AJ ;

ACOSTA, D ;

ATHANAS, M ;

MASEK, G ;

PAAR, HP ;

GRONBERG, J ;

KUTSCHKE, R ;

MENARY, S ;

MORRISON, RJ ;

NAKANISHI, S ;

NELSON, HN ;

NELSON, TK ;

QIAO, C ;

RICHMAN, JD ;

RYD, A ;

TAJIMA, H ;

SPERKA, D ;

WITHERELL, MS ;

PROCARIO, M ;

BALEST, R ;

CHO, K ;

DAOUDI, M ;

FORD, WT ;

JOHNSON, DR ;

LINGEL, K ;

LOHNER, M ;

RANKIN, P ;

SMITH, JG ;

ALEXANDER, JP ;

BEBEK, C ;

BERKELMAN, K ;

BLOOM, K ;

BROWDER, TE ;

CASSEL, DG ;

CHO, HA ;

COFFMAN, DM ;

CROWCROFT, DS ;

DRELL, PS ;

EHRLICH, R ;

GAIDAREV, P ;

GALIK, RS ;

GARCIASCIVERES, M .

PHYSICAL REVIEW D, 1995, 51 (03) :1014-1033

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