Observation of the Decay D0 → K- π+ e+ e-

被引：7

作者：

Lees, J. P. ^{[1
]}

Poireau, V. ^{[1
]}

Tisserand, V. ^{[1
]}

Grauges, E. ^{[2
]}

Palano, A. ^{[3
,4
]}

Eigen, G. ^{[5
]}

Brown, D. N. ^{[6
,7
,37
]}

Kolomensky, Yu. G. ^{[6
,7
]}

Fritsch, M. ^{[8
]}

Koch, H. ^{[8
]}

Schroeder, T. ^{[8
]}

Hearty, C. ^{[9
,10
]}

Mattison, T. S. ^{[10
]}

McKenna, J. A. ^{[10
]}

So, R. Y. ^{[10
]}

Blinov, V. E. ^{[11
,12
,13
]}

Buzykaev, A. R. ^{[11
]}

Druzhinin, V. P. ^{[11
,12
]}

Golubev, V. B. ^{[11
,12
]}

Kozyrev, E. A. ^{[11
,12
]}

Kravchenko, E. A. ^{[11
,12
]}

Onuchin, A. P. ^{[11
,12
,13
]}

Serednyakov, S. I. ^{[11
,12
]}

Skovpen, Yu. I. ^{[11
,12
]}

Solodov, E. P. ^{[11
,12
]}

Todyshev, K. Yu. ^{[11
,12
]}

Lankford, A. J. ^{[14
]}

Gary, J. W. ^{[15
]}

Long, O. ^{[15
]}

Eisner, A. M. ^{[16
]}

Lockman, W. S. ^{[16
]}

Vazquez, W. Panduro ^{[16
]}

Chao, D. S. ^{[17
]}

Cheng, C. H. ^{[17
]}

Echenard, B. ^{[17
]}

Flood, K. T. ^{[17
]}

Hitlin, D. G. ^{[17
]}

Kim, J. ^{[17
]}

Li, Y. ^{[17
]}

Miyashita, T. S. ^{[17
]}

Ongmongkolkul, P. ^{[17
]}

Porter, F. C. ^{[17
]}

Rohrken, M. ^{[17
]}

Huard, Z. ^{[18
]}

Meadows, B. T. ^{[18
]}

Pushpawela, B. G. ^{[18
]}

Sokoloff, M. D. ^{[18
]}

Sun, L. ^{[18
,86
]}

Smith, J. G. ^{[19
]}

Wagner, S. R. ^{[19
]}

机构：

[1] Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules LAPP, F-74941 Annecy Le Vieux, France

[2] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain

[3] Univ Bari, INFN, Sez Bari, I-70126 Bari, Italy

[4] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy

[5] Univ Bergen, Inst Phys, N-5007 Bergen, Norway

[6] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[7] Univ Calif Berkeley, Berkeley, CA 94720 USA

[8] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany

[9] Inst Particle Phys, Vancouver, BC V6T 1Z1, Canada

[10] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada

[11] RAS, SB, Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[12] Novosibirsk State Univ, Novosibirsk 630090, Russia

[13] Novosibirsk State Tech Univ, Novosibirsk 630092, Russia

[14] Univ Calif Irvine, Irvine, CA 92697 USA

[15] Univ Calif Riverside, Riverside, CA 92521 USA

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

[17] CALTECH, Pasadena, CA 91125 USA

[18] Univ Cincinnati, Cincinnati, OH 45221 USA

[19] Univ Colorado, Boulder, CO 80309 USA

[20] CNRS, Ecole Polytech, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[21] INFN, Sez Ferrara, I-44122 Ferrara, Italy

[22] Univ Ferrara, Dipartimento Fis, I-44122 Ferrara, Italy

[23] Univ Ferrara, Sci Terra, I-44122 Ferrara, Italy

[24] INFN, Lab Nazl Frascati, I-00044 Frascati, Italy

[25] INFN, Sez Genova, I-16146 Genoa, Italy

[26] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[27] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India

[28] Univ Iowa, Iowa City, IA 52242 USA

[29] Iowa State Univ, Ames, IA 50011 USA

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

[31] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France

[32] Univ Paris Sud 11, Ctr Sci Orsay, F-91898 Orsay, France

[33] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[34] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[35] Queen Mary Univ London, London E1 4NS, England

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

[37] Univ Louisville, Louisville, KY 40292 USA

[38] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[39] Univ Manchester, Manchester M13 9PL, Lancs, England

[40] Univ Maryland, College Pk, MD 20742 USA

[41] MIT, Lab Nucl Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[42] Inst Particle Phys, Montreal, PQ H3A 2T8, Canada

[43] McGill Univ, Montreal, PQ H3A 2T8, Canada

[44] INFN, Sez Milano, I-20133 Milan, Italy

[45] INFN, Sez Milano, I-20133 Milan, Italy

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

[47] Univ Mississippi, University, MS 38677 USA

[48] Univ Montreal, Phys Particules, Montreal, PQ H3C 3J7, Canada

[49] Univ Napoli Federico II, INFN, Sez Napoli, I-80126 Naples, Italy

[50] Univ Napoli Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 122卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

BABAR DETECTOR; SEARCH; RARE; TOOL;

D O I：

10.1103/PhysRevLett.122.081802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of the rare charm decay D-0 -> K-pi(+)e(+)e(-), based on 468 fb(-1) of e(+)e(-) annihilation data collected at or close to the center-of-mass energy of the (sic)(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. We find the branching fraction in the invariant mass range 0.675 < m(e(+)e(-)) < 0.875 GeV/c(2) of the electron-positron pair to be B(D-0 -> K-pi(+)e(+)e(-)) = (4.0 +/- 0.5 +/- 0.2 +/- 0.1) x 10(-6), where the first uncertainty is statistical, the second systematic, and the third due to the uncertainty in the branching fraction of the decay D-0 -> K-pi(+)pi(+)pi(-) used as a normalization mode. The significance of the observation corresponds to 9.7 standard deviations including systematic uncertainties. This result is consistent with the recently reported D-0 -> K-pi(+)mu(+)mu(-) branching fraction, measured in the same invariant mass range, and with the value expected in the standard model. In a set of regions of m(e(+)e(-)), where long-distance effects are potentially small, we determine a 90% confidence level upper limit on the branching fraction B(D-0 -> K-pi(+)e(+)e(-)) < 3.1 x 10(-6).

引用

页数：8

共 38 条

[1] Measurement of the Ratio of the B0 → D*-ι+vι and B0 → D*- μ+vμ Branching Fractions Using Three-Prong τ-Lepton Decays [J].

Aaij, R. ;

Adeva, B. ;

Adinolfi, M. ;

Ajaltouni, Z. ;

Akar, S. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Alfonso Albero, A. ;

Ali, S. ;

Alkhazov, G. ;

Cartelle, P. Alvarez ;

Alves, A. A., Jr. ;

Amato, S. ;

Amerio, S. ;

Amhis, Y. ;

An, L. ;

Anderlini, L. ;

Andreassi, G. ;

Andreotti, M. ;

Andrews, J. E. ;

Appleby, R. B. ;

Archilli, F. ;

d'Argent, P. ;

Romeu, J. Arnau ;

Artamonov, A. ;

Artuso, M. ;

Aslanides, E. ;

Auriemma, G. ;

Baalouch, M. ;

Babuschkin, I. ;

Bachmann, S. ;

Back, J. J. ;

Badalov, A. ;

Baesso, C. ;

Baker, S. ;

Balagura, V. ;

Baldini, W. ;

Baranov, A. ;

Barlow, R. J. ;

Barschel, C. ;

Barsuk, S. ;

Barter, W. ;

Baryshnikov, F. ;

Batozskaya, V. ;

Battista, V. ;

Bay, A. ;

Beaucourt, L. ;

Beddow, J. ;

Bedeschi, F. .

PHYSICAL REVIEW LETTERS, 2018, 120 (17)

[2]

Aaij R, 2017, J HIGH ENERGY PHYS, DOI [10.1007/JHEP08(2017)055, 10.1007/JHEP04(2017)162]

[3] Test of Lepton Universality Using B+ → K+l+l- Decays [J].

Aaij, R. ;

Adeva, B. ;

Adinolfi, M. ;

Affolder, A. ;

Ajaltouni, Z. ;

Akar, S. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Ali, S. ;

Alkhazov, G. ;

Cartelle, P. Alvarez ;

Alves, A. A., Jr. ;

Amato, S. ;

Amerio, S. ;

Amhis, Y. ;

An, L. ;

Anderlini, L. ;

Anderson, J. ;

Andreassen, R. ;

Andreotti, M. ;

Andrews, J. E. ;

Appleby, R. B. ;

Gutierrez, O. Aquines ;

Archilli, F. ;

Artamonov, A. ;

Artuso, M. ;

Aslanides, E. ;

Auriemma, G. ;

Baalouch, M. ;

Bachmann, S. ;

Back, J. J. ;

Badalov, A. ;

Balagura, V. ;

Baldini, W. ;

Barlow, R. J. ;

Barschel, C. ;

Barsuk, S. ;

Barter, W. ;

Batozskaya, V. ;

Battista, V. ;

Bay, A. ;

Beaucourt, L. ;

Beddow, J. ;

Bedeschi, F. ;

Bediaga, I. ;

Belogurov, S. ;

Belous, K. ;

Belyaev, I. ;

Ben-Haim, E. .

PHYSICAL REVIEW LETTERS, 2014, 113 (15)

[4] Measurement of the Ratio of Branching Fractions B(Bc+ → J/ψτ+ντ)/B(Bc+ → J/ψμ+νμ) [J].

Aaij, R. ;

Adeva, B. ;

Adinolfi, M. ;

Ajaltouni, Z. ;

Akar, S. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Alfonso Albero, A. ;

Ali, S. ;

Alkhazov, G. ;

Cartelle, P. Alvarez ;

Alves, A. A., Jr. ;

Amato, S. ;

Amerio, S. ;

Amhis, Y. ;

An, L. ;

Anderlini, L. ;

Andreassi, G. ;

Andreotti, M. ;

Andrews, J. E. ;

Appleby, R. B. ;

Archilli, F. ;

d'Argent, P. ;

Romeu, J. Arnau ;

Artamonov, A. ;

Artuso, M. ;

Aslanides, E. ;

Atzeni, M. ;

Auriemma, G. ;

Baalouch, M. ;

Babuschkin, I. ;

Bachmann, S. ;

Back, J. J. ;

Badalov, A. ;

Baesso, C. ;

Baker, S. ;

Balagura, V. ;

Baldini, W. ;

Baranov, A. ;

Barlow, R. J. ;

Barschel, C. ;

Barsuk, S. ;

Barter, W. ;

Baryshnikov, F. ;

Batozskaya, V. ;

Battista, V. ;

Bay, A. ;

Beaucourt, L. ;

Beddow, J. .

PHYSICAL REVIEW LETTERS, 2018, 120 (12)

[5] First observation of the decay D0 → K-π+μ+μ- in the ρ0-ω region of the dimuon mass spectrum [J].

Aaij, R. ;

Beteta, C. Abellan ;

Adeva, B. ;

Adinolfi, M. ;

Affolder, A. ;

Ajaltouni, Z. ;

Akar, S. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Ali, S. ;

Alkhazov, G. ;

Cartelle, P. Alvarez ;

Alves, A. A., Jr. ;

Amato, S. ;

Amerio, S. ;

Amhis, Y. ;

An, L. ;

Anderlini, L. ;

Anderson, J. ;

Andreassi, G. ;

Andreottilf, M. ;

Andrews, J. E. ;

Appleby, R. B. ;

Gutierrez, O. Aquines ;

Archilli, F. ;

d'Argent, P. ;

Artamonov, A. ;

Artuso, M. ;

Aslanides, E. ;

Auriemma, G. ;

Baalouch, M. ;

Bachmann, S. ;

Back, J. J. ;

Badalov, A. ;

Baesso, C. ;

Baldini, W. ;

Barlow, R. J. ;

Barsche, C. ;

Barsuk, S. ;

Barter, W. ;

Batozskaya, V. ;

Battista, V. ;

Bay, A. ;

Beaucourt, L. ;

Beddow, J. ;

Bedeschi, F. ;

Bediaga, I. ;

Bel, L. J. ;

Bellee, V. .

PHYSICS LETTERS B, 2016, 757 :558-567

[6]

Aaij R., 2015, Phys. Rev. Lett., V115, DOI DOI 10.1103/PHYSREVLETT.115.111803

[7]

Aaij R, 2018, Phys. Rev. D, V97, DOI DOI 10.1103/PHYSREVD.97.072013

[8] The DIRC particle identification system for the BABAR experiment [J].

Adam, I ;

Aleksan, R ;

Amerman, L ;

Antokhin, E ;

Aston, D ;

Bailly, P ;

Beigbeder, C ;

Benkebil, M ;

Besson, P ;

Bonneaud, G ;

Bourgeois, P ;

Breton, D ;

Briand, H ;

Brochard, F ;

Brown, DN ;

Buzykaev, A ;

Chauveau, J ;

Cizeron, R ;

Cohen-Tanugi, J ;

Convery, M ;

Dardin, S ;

David, P ;

De Domenico, G ;

de la Vaissiere, C ;

de Lesquen, A ;

Dohou, F ;

Doser, M ;

Emery, S ;

Ferrag, S ;

Fouque, G ;

Gaidot, A ;

Ganzhur, S ;

Gastaldi, F ;

Geld, T ;

Genat, JF ;

Giraud, PF ;

Gosset, L ;

Grenier, P ;

Haas, T ;

Hadig, T ;

Hale, D ;

de Monchenault, GH ;

Hamon, O ;

Hartfiel, B ;

Hast, C ;

Hoecker, A ;

John, M ;

Kadel, RW ;

Kadyk, J ;

Karolak, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2005, 538 (1-3) :281-357

[9] GEANT4-a simulation toolkit [J].

Agostinelli, S ;

Allison, J ;

Amako, K ;

Apostolakis, J ;

Araujo, H ;

Arce, P ;

Asai, M ;

Axen, D ;

Banerjee, S ;

Barrand, G ;

Behner, F ;

Bellagamba, L ;

Boudreau, J ;

Broglia, L ;

Brunengo, A ;

Burkhardt, H ;

Chauvie, S ;

Chuma, J ;

Chytracek, R ;

Cooperman, G ;

Cosmo, G ;

Degtyarenko, P ;

Dell'Acqua, A ;

Depaola, G ;

Dietrich, D ;

Enami, R ;

Feliciello, A ;

Ferguson, C ;

Fesefeldt, H ;

Folger, G ;

Foppiano, F ;

Forti, A ;

Garelli, S ;

Giani, S ;

Giannitrapani, R ;

Gibin, D ;

Cadenas, JJG ;

González, I ;

Abril, GG ;

Greeniaus, G ;

Greiner, W ;

Grichine, V ;

Grossheim, A ;

Guatelli, S ;

Gumplinger, P ;

Hamatsu, R ;

Hashimoto, K ;

Hasui, H ;

Heikkinen, A ;

Howard, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) :250-303

[10] Search for rare and forbidden dilepton decays of the D+, Ds+, and D0 charmed mesons [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 ;

Denisenko, K ;

Devmal, S ;

Fernandez, A ;

Fox, GF ;

Gagnon, P ;

Gobel, C ;

Gounder, K ;

Halling, AM ;

Herrera, G ;

Hurvits, G ;

James, C ;

Kasper, PA ;

Kwan, S ;

Langs, DC ;

Leslie, J ;

Lundberg, B ;

Magnin, J ;

MayTal-Beck, S ;

Meadows, B ;

Neto, JRTD ;

Mihalcea, D ;

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 .

PHYSICS LETTERS B, 1999, 462 (3-4) :401-409

← 1 2 3 4 →