Branching fractions for D0→K+K- and D0→π+π-, and a search for CP violation in D0 decays

被引：42

作者：

Aitala, EM ^{[1
]}

Amato, S

Anjos, JC

Appel, JA

Ashery, D

Banerjee, S

Bediaga, I

Blaylock, G

Bracker, SB

Burchat, PR

Burnstein, RA

Carter, T

Carvalho, HS

Copty, NJ

Cremaldi, LM

Darling, C

Denisenko, K

Fernandez, A

Fox, G

Gagnon, P

Gobel, C

Gounder, K

Halling, AM

Herrera, G

Hurvits, G

James, C

Kasper, PA

Kwan, S

Langs, DC

Leslie, J

Lundberg, B

MayTal-Beck, S

Meadows, B

Neto, JRTD

Milburn, RH

de Miranda, JM

Napier, A

Nguyen, A

d'Oliveira, AB

O'Shaughnessy, K

Peng, KC

Perera, LP

Purohit, MV

Quinn, B

Radeztsky, S

Rafatian, A

Reay, NW

Reidy, JJ

dos Reis, AC

Rubin, HA

机构：

[1] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[2] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA

[3] Univ Cincinnati, Cincinnati, OH 45221 USA

[4] CINVESTAV, Mexico City 14000, DF, Mexico

[5] Fermilab, Batavia, IL 60510 USA

[6] IIT, Chicago, IL 60616 USA

[7] Kansas State Univ, Manhattan, KS 66506 USA

[8] Univ Massachusetts, Amherst, MA 01003 USA

[9] Univ Mississippi, University, MS 38677 USA

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

[11] Princeton Univ, Princeton, NJ 08544 USA

[12] Univ Autonoma Puebla, Mexico City, DF, Mexico

[13] Univ S Carolina, Columbia, SC 29208 USA

[14] Stanford Univ, Stanford, CA 94305 USA

[15] Tel Aviv Univ, IL-69978 Tel Aviv, Israel

[16] Tufts Univ, Medford, MA 02155 USA

[17] Univ Wisconsin, Madison, WI 53706 USA

[18] Yale Univ, New Haven, CT 06511 USA

来源：

PHYSICS LETTERS B | 1998年 / 421卷 / 1-4期

关键词：

D O I：

10.1016/S0370-2693(97)01570-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the large hadroproduced charm sample collected in experiment E791 at Fermilab, we have measured ratios of branching fractions for the two-body singly-Cabibbo-suppres sed charged decays of the D-0* Gamma(D-0 --> K+ K-)/Gamma(D0 --> K- pi(+)) = 0.109 +/- 0.003 +/- 0.003 Gamma(D-0--> K+K-)/Gamma(D0 --> K-K+) = 0.040 +/- 0.002 +/- 0.003, and Gamma(D0 --> K+K-)/Gamma(D-0 --> pi(+)pi(-)) = 2.75 +/- 0.15 +/- 0.16. We have looked for differences in the decay rates of D-0 and (D) over bar(-0) to the CP eigenstates K+K- and pi(+)pi(-), and have measured the CP asymmetry parameters A(CP)(K+ K-) = -0.010 +/- 0.049 +/- 0.012 and A(CP)(pi(+) pi(-)) = -0.049 +/- 0.078 +/- 0.030, both consistent with zero. (C) 1998 Elsevier Science B.V.

引用

页码：405 / 411

页数：7

共 37 条

[11] MEASUREMENTS OF CABIBBO-SUPPRESSED HADRONIC DECAYS OF CHARMED D+ AND D-0 MESONS [J].

BALTRUSAITIS, RM ;

BECKER, JJ ;

BLAYLOCK, GT ;

BROWN, JS ;

BUNNELL, KO ;

BURNETT, TH ;

CASSELL, RE ;

COFFMAN, D ;

COOK, V ;

COWARD, DH ;

DADO, S ;

DORFAN, DE ;

DUBOIS, GP ;

DUNCAN, AL ;

EINSWEILER, KF ;

EISENSTEIN, BI ;

FABRIZIO, R ;

GLADDING, G ;

HAMILTON, RP ;

HAUSER, J ;

HEUSCH, CA ;

HITLIN, DG ;

KOPKE, L ;

LOCKMAN, WS ;

MALLIK, U ;

MOCKETT, PM ;

MOZLEY, RF ;

NAPPI, A ;

ODIAN, A ;

PARTRIDGE, R ;

PERRIER, J ;

PLAETZER, SA ;

RICHMAN, JD ;

ROEHRIG, J ;

RUSSELL, JJ ;

SADROZINSKI, HFW ;

SCARLATELLA, M ;

SCHALK, TL ;

SCHINDLER, RH ;

SEIDEN, A ;

SIMOPOULOS, C ;

SLEEMAN, JC ;

SPADAFORA, AL ;

THALER, JJ ;

TRIPSAS, B ;

TOKI, W ;

VILLA, F ;

WATTENBERG, A ;

WEINSTEIN, AJ ;

WERMES, N .

PHYSICAL REVIEW LETTERS, 1985, 55 (02) :150-153

[12] EVIDENCE FOR VIRTUAL COMPTON-SCATTERING FROM THE PROTON [J].

VANDENBRAND, JFJ ;

ENT, R ;

ANTHONY, PL ;

ARNOLD, RG ;

ARRINGTON, J ;

BEISE, EJ ;

BELZ, JE ;

BOSTED, PE ;

BULTEN, HJ ;

CHAPMAN, MS ;

COULTER, KP ;

DIETRICH, FS ;

EPSTEIN, M ;

FILIPPONE, BW ;

GAO, H ;

GEARHART, RA ;

GEESAMAN, DF ;

HANSEN, JO ;

HOLT, RJ ;

JACKSON, HE ;

JONES, CE ;

KEPPEL, CE ;

KINNEY, ER ;

KUHN, S ;

LEE, K ;

LORENZON, W ;

LUNG, A ;

MAKINS, NCR ;

MARGAZIOTIS, DJ ;

MCKEOWN, RD ;

MILNER, RG ;

MUELLER, B ;

NAPOLITANO, J ;

NELSON, JK ;

ONEILL, TG ;

PAPAVASSILIOU, V ;

PETRATOS, GG ;

POTTERVELD, DH ;

ROCK, SE ;

SPENGOS, M ;

SZALATA, ZM ;

TAO, LH ;

VANBIBBER, K ;

WASSON, DA ;

WHITE, JL ;

ZEIDMAN, B .

PHYSICAL REVIEW D, 1995, 52 (09) :4868-4871

[13] THE LUND MONTE-CARLO FOR HADRONIC PROCESSES - PYTHIA VERSION 4.8 [J].

BENGTSSON, HU ;

SJOSTRAND, T .

COMPUTER PHYSICS COMMUNICATIONS, 1987, 46 (01) :43-82

[14]

BLOCK B, 1987, SOV J NUCL PHYS, V45, P301

[15]

BLOCK B, 1987, SOV J NUCL PHYS, V45, P522

[16]

BLOCK BY, 1987, SOV J NUCL PHYS, V45, P135

[17] A simple multiprocessor management system for event-parallel computing [J].

Bracker, S ;

Gounder, K ;

Hendrix, K ;

Summers, D .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1996, 43 (05) :2457-2464

[18] Charm nonleptonic decays and final state interactions [J].

Buccella, F ;

Lusignoli, M ;

Pugliese, A .

PHYSICS LETTERS B, 1996, 379 (1-4) :249-256

[19] NONLEPTONIC WEAK DECAYS OF CHARMED MESONS [J].

BUCCELLA, F ;

LUSIGNOLI, M ;

MIELE, G ;

PUGLIESE, A ;

SANTORELLI, P .

PHYSICAL REVIEW D, 1995, 51 (07) :3478-3486

[20] FINAL-STATE-INTERACTION AND SU(3)-BREAKING EFFECTS IN D(0)-]PI-PI-BAR,KKBAR [J].

CHAU, LL ;

CHENG, HY .

PHYSICS LETTERS B, 1992, 280 (3-4) :281-286

← 1 2 3 4 →