Study of D0-(D)over-bar0 mixing and D0 doubly Cabibbo-suppressed decays

被引：17

作者：

Barate, R ^{[1
]}

Buskulic, D

Decamp, D

Ghez, P

Goy, C

Lees, JP

Lucotte, A

Merle, E

Minard, MN

Nief, JY

Pietrzyk, B

Alemany, R

Boix, G

Casado, MP

Chmeissani, M

Crespo, JM

Delfino, M

Fernandez, E

Fernandez-Bosman, M

Garrido, L

Grauges, E

Juste, A

Martinez, M

Merino, G

Miquel, R

Mir, LM

Park, IC

Pascual, A

Riu, I

Sanchez, F

Colaleo, A

Creanza, D

de Palma, M

Gelao, G

Iaselli, G

Maggi, G

Maggi, M

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

机构：

[1] CNRS, IN2P3, LAPP, F-74019 Annecy Le Vieux, France

[2] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[3] Ist Nazl Fis Nucl, Dipartimento Fis, I-70126 Bari, Italy

[4] Acad Sinica, Inst High Energy Phys, Beijing, Peoples R China

[5] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland

[6] Univ Clermont Ferrand 2, IN2P3, CNRS, Phys Corpusculaire Lab, F-63177 Clermont Ferrand, France

[7] Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[8] NCSR Demokritos, GR-15310 Athens, Greece

[9] Ecole Polytech, CNRS, IN2P3, Lab Phys Nucl & Hautes Energies, F-91128 Palaiseau, France

[10] Univ Florence, Dipartimento Fis, Ist Nazl Fis Nucl, I-50125 Florence, Italy

[11] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA

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

[13] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[14] Heidelberg Univ, Inst Hochenergiephys, D-69120 Heidelberg, Germany

[15] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BZ, England

[16] Univ Innsbruck, Inst Phys Expt, A-6020 Innsbruck, Austria

[17] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

[18] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[19] CNRS, IN2P3, Fac Sci Luminy, Ctr Phys Particules, F-13288 Marseille, France

[20] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[21] Ist Nazl Fis Nucl, I-20133 Milan, Italy

[22] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany

[23] Univ Paris 11, Lab Accelerateur Lineaire, IN2P3, CNRS, F-91898 Orsay, France

[24] Univ Pisa, Dipartimento Fis, Ist Nazl Fis Nucl, I-56010 Pisa, Italy

[25] Scuola Normale Super Pisa, I-56010 Pisa, Italy

[26] Univ London, Royal Holloway & Bedford New Coll, Dept Phys, Egham TW20 0EX, Surrey, England

[27] Rutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon, England

[28] CEA, DAPNIA, Serv Phys Particules, CE Saclay, F-91191 Gif Sur Yvette, France

[29] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[30] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

[31] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany

[32] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy

[33] Ist Nazl Fis Nucl, I-34127 Trieste, Italy

[34] Univ Washington, Seattle, WA 98195 USA

[35] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[36] Univ Barcelona, E-08028 Barcelona, Spain

[37] Ist Nazl Fis Nucl, Dipartimento Fis, I-95129 Catania, Italy

[38] Univ Turin, Ist Fis Gen, Turin, Italy

[39] CNR, Ist Cosmogeofis, I-10133 Turin, Italy

[40] Kangnung Natl Univ, Kangnung, South Korea

[41] Univ Sassari, Ist Matemat & Fis, I-07100 Sassari, Italy

来源：

PHYSICS LETTERS B | 1998年 / 436卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(98)00946-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D8+ --> D(0)pi(s)(+), with D-0 decaying to K- pi(+) or to K+ pi(-), are studied. The relative branching ratio B(D-0 --> K+ pi(-))/B(D-0 --> K- pi(+)) is measured to be (1.84 +/- 0.59(stat.) +/- 0.34(syst.))%. The two possible contributions to the D-0 --> K+ pi(-) decay, doubly Cabibbo-suppressed decays and DO-DO mixing, are disentangled by measuring the proper-time distribution of the reconstructed DO's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：211 / 221

页数：11

共 24 条

[1] Search for D0-(D)over-bar0 mixing and doubly-Cabibbo-suppressed decays of the D0 in hadronic final states
Aitala, EM
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, NK
Cremaldi, LM
Darling, C
Fernandez, A
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
Santha, PKS
Santoro, AFS
[J]. PHYSICAL REVIEW D, 1998, 57 (01) : 13 - 27
[2] *ALEPH COLL, 1992, Z PHYS C, V53, P1
[3] *ALEPH COLL, 1994, Z PHYS C, V62, P1
[4] A measurement of R-b using a lifetime-mass tag
Barate, R
Buskulic, D
Decamp, D
Ghez, P
Goy, C
Lees, JP
Lucotte, A
Minard, MN
Nief, JY
Pietrzyk, B
Casado, MP
Chmeissani, M
Comas, P
Crespo, JM
Delfino, M
Fernandez, E
FernandezBosman, M
Garrido, L
Juste, A
Martinez, M
Miquel, R
Mir, LM
Orteu, S
Padilla, C
Park, IC
Pascual, A
Perlas, JA
Riu, I
Sanchez, F
Teubert, F
Colaleo, A
Creanza, D
dePalma, 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
[J]. PHYSICS LETTERS B, 1997, 401 (1-2) : 150 - 162
[5] Particles and field .1. Review of particle physics
Barnett, RM
Carone, CD
Groom, DE
Trippe, TG
Wohl, CG
Armstrong, B
Gee, PS
Wagman, GS
James, F
Mangano, M
Monig, K
Montanet, L
Feng, JL
Murayama, H
Hernandez, JJ
Manohar, A
AguilarBenitez, M
Caso, C
Crawford, RL
Roos, M
Tornqvist, NA
Hayes, KG
Hagiwara, K
Nakamura, K
Tanabashi, M
Olive, K
Honscheid, K
Burchat, PR
Shrock, RE
Eidelman, S
Schindler, RH
Gurtu, A
Hikasa, K
Conforto, G
Workman, RL
Grab, C
Amsler, C
[J]. PHYSICAL REVIEW D, 1996, 54 (01) : 1 - +
[6] ON D0-DBAR0 MIXING AND CP VIOLATION
BIGI, I
SANDA, AI
[J]. PHYSICS LETTERS B, 1986, 171 (2-3) : 320 - 324
[7] Experimental implications of large CP violation and final state interactions in the search for D-0-(D)over-bar(0) mixing
Browder, TE
Pakvasa, S
[J]. PHYSICS LETTERS B, 1996, 383 (04) : 475 - 481
[8] Charm nonleptonic decays and final state interactions
Buccella, F
Lusignoli, M
Pugliese, A
[J]. PHYSICS LETTERS B, 1996, 379 (1-4) : 249 - 256
[9] BURDMAN G, 1994, P CHARM 2000 WORKSH
[10] PERFORMANCE OF THE ALEPH DETECTOR AT LEP
BUSKULIC, D
CASPER, D
DEBONIS, I
DECAMP, D
GHEZ, P
GOY, C
LEES, JP
MINARD, MN
ODIER, P
PIETRZYK, B
ARIZTIZABAL, F
CHMEISSANI, M
CRESPO, JM
EFTHYMIOPOULOS, I
FERNANDEZ, E
FERNANDEZBOSMAN, M
GAITAN, V
GARRIDO, L
MARTINEZ, M
MATTISON, T
ORTEU, S
PACHECO, A
PADILLA, C
PALLA, F
PASCUAL, A
PERLAS, JA
SANCHEZ, F
TEUBERT, F
CHIUMARULO, F
CLEMENTE, A
CREANZA, D
DEPALMA, M
FARILLA, A
FERORELLI, R
IASELLI, G
MAGGI, G
MARINELLI, N
MASTROGIACOMO, A
NATALI, S
NEGRO, V
NUZZO, S
PAPAGNI, M
PINTO, C
RANIERI, A
RASO, G
ROMANO, F
RUGGIERI, F
SELVAGGI, G
TEMPESTA, P
ZITO, G
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1995, 360 (03) : 481 - 506

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