Improved constraints on D0-(D)over-bar0 mixing in D0 → K+ π- decays from the Belle detector -: art. no. 151801

被引：76

作者：

Zhang, LM ^{[1
]}

Zhang, ZP

Li, J

Abe, K

Adachi, I

Aihara, H

Anipko, D

Arinstein, K

Asano, Y

Aushev, T

Bahinipati, S

Bakich, AM

Balagura, V

Barbero, M

Bay, A

Bedny, I

Belous, K

Bitenc, U

Bizjak, I

Blyth, S

Bondar, A

Bozek, A

Bracko, M

Brodzicka, J

Browder, TE

Chang, MC

Chang, P

Chao, Y

Chen, A

Chen, WT

Cheon, BG

Chistov, R

Choi, SK

Choi, Y

Choi, YK

Chuvikov, A

Cole, S

Dalseno, J

Danilov, M

Dash, M

Drutskoy, A

Eidelman, S

Gabyshev, N

Gershon, T

Go, A

Gokhroo, G

Golob, B

Gorisek, A

Ha, HC

机构：

[1] Univ Sci & Technol China, Hefei 230026, Peoples R China

[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[3] Chiba Univ, Chiba, Japan

[4] Chonnam Natl Univ, Kwangju, South Korea

[5] Univ Cincinnati, Cincinnati, OH 45221 USA

[6] Gyeongsang Natl Univ, Chinju, South Korea

[7] Univ Hawaii, Honolulu, HI 96822 USA

[8] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan

[9] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[10] Inst High Energy Phys, Vienna, Austria

[11] Inst High Energy Phys, Protvino, Russia

[12] Inst Theoret & Expt Phys, Moscow 117259, Russia

[13] Jozef Stefan Inst, Ljubljana, Slovenia

[14] Kanagawa Univ, Yokohama, Kanagawa, Japan

[15] Korea Univ, Seoul 136701, South Korea

[16] Kyungpook Natl Univ, Taegu 702701, South Korea

[17] Swiss Fed Inst Technol, EPFL, CH-1015 Lausanne, Switzerland

[18] Univ Ljubljana, Ljubljana 61000, Slovenia

[19] Univ Maribor, SLO-2000 Maribor, Slovenia

[20] Univ Melbourne, Parkville, Vic 3052, Australia

[21] Nagoya Univ, Nagoya, Aichi, Japan

[22] Nara Womens Univ, Nara 630, Japan

[23] Natl Cent Univ, Chungli 32054, Taiwan

[24] Natl United Univ, Miaoli, Taiwan

[25] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan

[26] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[27] Niigata Univ, Niigata 95021, Japan

[28] Nova Gorica Polytech, Nova Gorica, Slovenia

[29] Osaka City Univ, Osaka 558, Japan

[30] Osaka Univ, Osaka, Japan

[31] Panjab Univ, Chandigarh 160014, India

[32] Peking Univ, Beijing 100871, Peoples R China

[33] Princeton Univ, Princeton, NJ 08544 USA

[34] RIKEN, BNL Res Ctr, Upton, NY 11973 USA

[35] Saga Univ, Saga 840, Japan

[36] Seoul Natl Univ, Seoul 151, South Korea

[37] Shinshu Univ, Nagano, Japan

[38] Univ Sydney, Sydney, NSW 2006, Australia

[39] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[40] Toho Univ, Funabashi, Chiba 274, Japan

[41] Tohoku Univ, Tagajo, Miyagi, Japan

[42] Tohoku Univ, Sendai, Miyagi 980, Japan

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

[44] Tokyo Inst Technol, Tokyo 152, Japan

[45] Tokyo Metropolitan Univ, Tokyo 158, Japan

[46] Tokyo Univ Agr & Technol, Tokyo, Japan

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

[48] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[49] Yonsei Univ, Seoul 120749, South Korea

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.96.151801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the results of a search for D-0-D-0 mixing in D-0-> K(+)pi(-) decays based on 400 fb(-1) of data accumulated by the Belle detector at KEKB. Both assuming CP conservation and allowing for CP violation, we fit the decay-time distribution for the mixing parameters x(') and y('), as well as for the parameter R-D, the ratio of doubly Cabibbo-suppressed decays to Cabibbo-favored decays. The 95% confidence level region in the (x('2),y(')) plane is obtained using a frequentist method. Assuming CP conservation, we find x('2)< 0.72x10(-3) and -9.9x10(-3)< y(')< 6.8x10(-3) at the 95% confidence level; these are the most stringent constraints on the mixing parameters to date. The no-mixing point (0,0) has a confidence level of 3.9%. Assuming no mixing, we measure R-D=(0.377 +/- 0.008 +/- 0.005)%.

引用

页码：1 / 4

页数：6

共 10 条

[1] The Belle detector [J].

Abashian, A ;

Abe, K ;

Abe, R ;

Abe, K ;

Adachi, I ;

Ahn, BS ;

Ahn, HS ;

Aihara, H ;

Akatsu, M ;

Akhmetshin, R ;

Alexander, JP ;

Alimonti, G ;

An, Q ;

Aoki, K ;

Asai, M ;

Asano, Y ;

Aso, T ;

Aulchenko, V ;

Bakich, AM ;

Banas, E ;

Behari, S ;

Behera, PK ;

Beiline, D ;

Bondar, A ;

Bozek, A ;

Browder, TE ;

Casey, BCK ;

Chang, P ;

Chang, YH ;

Chao, Y ;

Chen, HS ;

Chen, HF ;

Chen, YQ ;

Cheon, BG ;

Chidzik, S ;

Choi, S ;

Choi, Y ;

Dneprovsky, L ;

Doi, Y ;

Dong, LY ;

Dragic, J ;

Drutskoy, A ;

Eidelman, S ;

Enomoto, R ;

Everton, CW ;

Fang, F ;

Fujii, H ;

Fujimoto, K ;

Fujita, Y ;

Fukunaga, C .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (01) :117-232

[2] Search for D0-(D)over-bar0 mixing and doubly-Cabibbo-suppressed decays of the D0 in hadronic final states [J].

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 .

PHYSICAL REVIEW D, 1998, 57 (01) :13-27

[3] Search for D0-(D)over-bar0 mixing and a measurement of the doubly Cabibbo-suppressed decay rate in D0→Kπ decays -: art. no. 171801 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Gaillard, JM ;

Hicheur, A ;

Karyotakis, Y ;

Lees, JP ;

Robbe, P ;

Tisserand, V ;

Zghiche, A ;

Palano, A ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kral, JF ;

Kukartsev, G ;

LeClerc, C ;

Levi, ME ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Romosan, A ;

Ronan, MT ;

Shelkov, VG ;

Telnov, AV .

PHYSICAL REVIEW LETTERS, 2003, 91 (17) :1718011-1718017

[4] D0-(D)over-bar0 mixing and rare charm decays [J].

Burdman, G ;

Shipsey, I .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 2003, 53 :431-499

[5] Review of particle physics [J].

Eidelman, S ;

Hayes, KG ;

Olive, KA ;

Aguilar-Benitez, M ;

Amsler, C ;

Asner, D ;

Babu, KS ;

Barnett, RM ;

Beringer, J ;

Burchat, PR ;

Carone, CD ;

Caso, C ;

Conforto, G ;

Dahl, O ;

D'Ambrosio, G ;

Doser, M ;

Feng, JL ;

Gherghetta, T ;

Gibbons, L ;

Goodman, M ;

Grab, C ;

Groom, DE ;

Gurtu, A ;

Hagiwara, K ;

Hernández-Rey, JJ ;

Hikasa, K ;

Honscheid, K ;

Jawahery, H ;

Kolda, C ;

Kwon, Y ;

Mangano, ML ;

Manohar, AV ;

March-Russell, J ;

Masoni, A ;

Miquel, R ;

Mönig, K ;

Murayama, H ;

Nakamura, K ;

Navas, S ;

Pape, L ;

Patrignani, C ;

Piepke, A ;

Raffelt, G ;

Roos, M ;

Tanabashi, M ;

Terning, J ;

Törnqvist, NA ;

Trippe, TG ;

Vogel, P ;

Wohl, CG .

PHYSICS LETTERS B, 2004, 592 (1-4) :1-1109

[6] Search for D0-0 mixing [J].

Godang, R ;

Kinoshita, K ;

Lai, IC ;

Schrenk, S ;

Bonvicini, G ;

Cinabro, D ;

Perera, LP ;

Zhou, GJ ;

Eigen, G ;

Lipeles, E ;

Schmidtler, M ;

Shapiro, A ;

Sun, WM ;

Weinstein, AJ ;

Würthwein, F ;

Jaffe, DE ;

Masek, G ;

Paar, HP ;

Potter, EM ;

Prell, S ;

Sharma, V ;

Asner, DM ;

Eppich, A ;

Gronberg, J ;

Hill, TS ;

Korte, CM ;

Kutschke, R ;

Lange, DJ ;

Morrison, RJ ;

Nelson, HN ;

Qiao, C ;

Ryd, A ;

Tajima, H ;

Witherell, MS ;

Briere, RA ;

Behrens, BH ;

Ford, WT ;

Gritsan, A ;

Roy, J ;

Smith, JG ;

Alexander, JP ;

Baker, R ;

Bebek, C ;

Berger, BE ;

Berkelman, K ;

Blanc, F ;

Boisvert, V ;

Cassel, DG ;

Dickson, M ;

Drell, PS .

PHYSICAL REVIEW LETTERS, 2000, 84 (22) :5038-5042

[7] Overview of the KEKB accelerators [J].

Kurokawa, S ;

Kikutani, E .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 499 (01) :1-7

[8] Search for D0-D-0 mixing in D0→K+π- decays and measurement of the doubly-Cabibbo-suppressed decay rate -: art. no. 071801 [J].

Li, J ;

Zhang, ZP ;

Schwartz, AJ ;

Abe, K ;

Aihara, H ;

Akatsu, M ;

Asano, Y ;

Aushev, T ;

Bakich, AM ;

Bay, A ;

Bedny, I ;

Bitenc, U ;

Bizjak, I ;

Bondar, A ;

Bozek, A ;

Bracko, M ;

Brodzicka, J ;

Browder, TE ;

Chao, Y ;

Chen, A ;

Chen, KF ;

Chen, WT ;

Cheon, BG ;

Chistov, R ;

Choi, SK ;

Choi, Y ;

Chuvikov, A ;

Cole, S ;

Dalseno, J ;

Danilov, M ;

Dash, M ;

Dong, LY ;

Drutskoy, A ;

Eidelman, S ;

Eiges, V ;

Enari, Y ;

Fang, F ;

Fratina, S ;

Gabyshev, N ;

Garmash, A ;

Gershon, T ;

Gokhroo, G ;

Haba, J ;

Hayasaka, K ;

Hayashii, H ;

Hazumi, M ;

Higuchi, T ;

Hokuue, T ;

Hoshi, H .

PHYSICAL REVIEW LETTERS, 2005, 94 (07) :1-5

[9] Measurement of the doubly Cabibbo suppressed decay D0 K+π- and a search for charm mixing [J].

Link, JM ;

Yager, PM ;

Anjos, JC ;

Bediaga, I ;

Göbel, C ;

Machado, AA ;

Magnin, J ;

Massafferri, A ;

de Miranda, JM ;

Pepe, IM ;

Polycarpo, E ;

dos Reis, AC ;

Carrillo, S ;

Casimiro, E ;

Cuautle, E ;

Sánchez-Hernández, A ;

Uribe, C ;

Vázquez, F ;

Agostino, L ;

Cinquini, L ;

Cumalat, JP ;

O'Reilly, B ;

Segoni, I ;

Stenson, K ;

Butler, JN ;

Cheung, HWK ;

Chiodini, G ;

Gaines, I ;

Garbincius, PH ;

Garren, LA ;

Gottschalk, E ;

Kasper, PH ;

Kreymer, AE ;

Kutschke, R ;

Wang, M ;

Benussi, L ;

Bertani, M ;

Bianco, S ;

Fabbri, FL ;

Zallo, A ;

Reyes, M ;

Cawlfield, C ;

Kim, DY ;

Rahimi, A ;

Wiss, J ;

Gardner, R ;

Kryemadhi, A ;

Chung, YS ;

Kang, JS ;

Ko, BR .

PHYSICS LETTERS B, 2005, 618 (1-4) :23-33

[10] Belle silicon vertex detectors [J].

Ushiroda, Y .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 511 (1-2) :6-10

← 1 →