Search for D-0(D)over-bar(0) mixing in semileptonic decay modes

被引：60

作者：

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

Costa, I

Cremaldi, LM

Darling, C

Denisenko, K

Fernandez, A

Gagnon, P

Gerzon, S

Gobel, C

Gounder, K

Halling, AM

Herrera, G

Hurvits, G

James, C

Kasper, PA

Kwan, S

Langs, DC

Leslie, J

Lundberg, B

MayTalBeck, S

Meadows, B

Neto, JRTD

Milburn, RH

deMiranda, JM

Napier, A

Nguyen, A

dOliveira, AB

OShaughnessy, K

Peng, KC

Perera, LP

Purohit, MV

Quinn, B

Radeztsky, S

Rafatian, A

Reay, NW

Reidy, JJ

dosReis, AC

机构：

[1] CTR BRASILEIRO PESQUISAS FIS,RIO JANEIRO,BRAZIL

[2] UNIV CALIF SANTA CRUZ,SANTA CRUZ,CA 95064

[3] UNIV CINCINNATI,CINCINNATI,OH 45221

[4] CINVESTAV IPN,MEXICO CITY 14000,DF,MEXICO

[5] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[6] IIT,CHICAGO,IL 60616

[7] KANSAS STATE UNIV,MANHATTAN,KS 66506

[8] OHIO STATE UNIV,COLUMBUS,OH 43210

[9] PRINCETON UNIV,PRINCETON,NJ 08544

[10] UNIV AUTONOMA PUEBLA,PUEBLA 72570,MEXICO

[11] UNIV S CAROLINA,COLUMBIA,SC 29208

[12] STANFORD UNIV,STANFORD,CA 94305

[13] TEL AVIV UNIV,IL-69978 TEL AVIV,ISRAEL

[14] TUFTS UNIV,MEDFORD,MA 02155

[15] UNIV WISCONSIN,MADISON,WI 53706

[16] YALE UNIV,NEW HAVEN,CT 06511

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.77.2384

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the result of a search for D-0 (D) over bar(0) mixing in the data from hadroproduction experiment E791 at Fermilab. We use the charge of the pion from the strong decay D-*+ --> D-0 pi(+) (and charge conjugate) to identify the charm quantum number of the neutral D at production, and the charge of the lepton and the kaon in the semileptonic decays D-0 --> Ke nu and K mu nu to identify the charm at the time of decay. No evidence of mixing is seen. We set a 90% confidence level upper limit on mixing of r < 0.50%, where r = Gamma(D-0 --> (D) over bar(0) --> K(+)l(-)<(nu)over bar>(l))/(D-0 --> K(-)l(+)nu(l)).

引用

页码：2384 / 2387

页数：4

共 20 条

[1] Medium modifications of the rho meson at CERN super proton synchrotron energies (200 GeV/nucleon) [J].

Chanfray, G ;

Rapp, R ;

Wambach, J .

PHYSICAL REVIEW LETTERS, 1996, 76 (03) :368-371

[2]

AITALA EM, IN PRESS

[3] THE E791 PARALLEL ARCHITECTURE DATA ACQUISITION-SYSTEM [J].

AMATO, S ;

NETO, JRTD ;

DEMIRANDA, J ;

JAMES, C ;

SUMMERS, DJ ;

BRACKER, SB .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1993, 324 (03) :535-542

[4] STUDY OF D0-DBAR0 MIXING [J].

ANJOS, JC ;

APPEL, JA ;

BEAN, A ;

BRACKER, SB ;

BROWDER, TE ;

CREMALDI, LM ;

ELLIOTT, JR ;

ESCOBAR, CO ;

ESTABROOKS, P ;

GIBNEY, MC ;

HARTNER, GF ;

KARCHIN, PE ;

KUMAR, BR ;

LOSTY, MJ ;

LUSTE, GJ ;

MANTSCH, PM ;

MARTIN, JF ;

MCHUGH, S ;

MENARY, SR ;

MORRISON, RJ ;

NASH, T ;

NAUENBERG, U ;

ONG, P ;

PINFOLD, J ;

PUNKAR, G ;

PUROHIT, MV ;

RAAB, JR ;

SANTORO, AFS ;

SIDHU, JS ;

SLIWA, K ;

SOKOLOFF, MD ;

SOUZA, MHG ;

SPALDING, WJ ;

STREETMAN, ME ;

STUNDZIA, AB ;

WITHERELL, MS .

PHYSICAL REVIEW LETTERS, 1988, 60 (13) :1239-1242

[5]

APPEL JA, 1992, ANNU REV NUCL PART S, V42, P367

[6] 4TH-GENERATION SIGNATURES IN D0-DBAR0 MIXING AND RARE D-DECAYS [J].

BABU, KS ;

HE, XG ;

LI, XQ ;

PAKVASA, S .

PHYSICS LETTERS B, 1988, 205 (04) :540-544

[7] PERFORMANCE OF THE CHERENKOV COUNTERS IN THE FERMILAB TAGGED PHOTON SPECTROMETER FACILITY [J].

BARTLETT, D ;

BHADRA, S ;

CREMALDI, L ;

DUNCAN, A ;

EDMONDS, D ;

ELLIOTT, J ;

GIBNEY, M ;

NAUENBERG, U ;

SCHULTZ, G ;

HARTNER, G .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1987, 260 (01) :55-75

[8] THE ROLE OF CP VIOLATION IN D-0(D)OVER-BAR(0) MIXING [J].

BLAYLOCK, G ;

SEIDEN, A ;

NIR, Y .

PHYSICS LETTERS B, 1995, 355 (3-4) :555-560

[9] NEW APPROACH TO THE SEARCH FOR NEUTRINOLESS DOUBLE BETA-DECAY [J].

RAGHAVAN, RS .

PHYSICAL REVIEW LETTERS, 1994, 72 (10) :1411-1414

[10] D0-DBAR0 MIXING - A POSSIBLE TEST OF PHYSICS BEYOND THE STANDARD MODEL [J].

DATTA, A ;

KUMBHAKAR, D .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1985, 27 (04) :515-522

← 1 2 →