- Physical Review Journals
All JournalsPhysics Magazine
Access Provided by Xinjiang University

Physical Review D

Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Search for resonance decays to lepton+jet at DESY HERA and limits on leptoquarks

S. Chekanov, M. Derrick, D. Krakauer, J. H. Loizidesa, S. Magill, B. Musgrave, J. Repond, and R. Yoshida

M. C. K. Mattingly

P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli et al.

G. Aghuzumtsyan, D. Bartsch, I. Brock, S. Goers, H. Hartmann, E. Hilger, P. Irrgang, H.-P. Jakob, A. Kappesb et al.

D. S. Bailey, N. H. Brook, J. E. Cole, B. Foster, G. P. Heath, H. F. Heath, S. Robins, E. Rodrigues, J. Scott et al.

M. Capua, A. Mastroberardino, M. Schioppa, and G. Susinno

J. Y. Kim, Y. K. Kim, J. H. Lee, I. T. Lim, and M. Y. Pacd

A. Caldwelle, M. Helbich, X. Liu, B. Mellado, Y. Ning, S. Paganis, Z. Ren, W. B. Schmidke, and F. Sciulli

J. Chwastowski, A. Eskreys, J. Figiel, K. Olkiewicz, P. Stopa, and L. Zawiejski

L. Adamczyk, T. Bołd, I. Grabowska-Bołd, D. Kisielewska, A. M. Kowal, M. Kowal, T. Kowalski, M. Przybycień, L. Suszycki et al.

A. Kotański and W. Słomiński

V. Adler, L. A. T. Bauerdickf, U. Behrens, I. Bloch, K. Borras, V. Chiochia, D. Dannheim, G. Drews, J. Fourletova et al.

S. Schlenstedt

G. Barbagli, E. Gallo, C. Genta, and P. G. Pelfer

A. Bamberger, A. Benen, and N. Coppola

M. Bell, P. J. Bussey, A. T. Doyle, C. Glasman, J. Hamilton, S. Hanlon, S. W. Lee, A. Lupi, D. H. Saxon et al.

I. Gialas

B. Bodmann, T. Carli, U. Holm, K. Klimek, N. Krumnack, E. Lohrmann, M. Milite, H. Salehi, S. Stonjekk et al.

C. Collins-Tooth, C. Foudas, R. Gonçalo, K. R. Long, and A. D. Tapper

P. Cloth and D. Filges

M. Kuze, K. Nagano, K. Tokushukul, S. Yamada, and Y. Yamazaki

A. N. Barakbaev, E. G. Boos, N. S. Pokrovskiy, and B. O. Zhautykov

H. Lim and D. Son

K. Piotrzkowski

F. Barreiro, O. González, L. Labarga, J. del Peso, E. Tassi, J. Terrón, and M. Vázquez

M. Barbi, F. Corriveau, S. Gliga, J. Lainesse, S. Padhi, and D. G. Stairs

T. Tsurugai

A. Antonov, P. Danilov, B. A. Dolgoshein, D. Gladkov, V. Sosnovtsev, and S. Suchkov

R. K. Dementiev, P. F. Ermolov, Yu. A. Golubkov, I. I. Katkov, L. A. Khein, I. A. Korzhavina, V. A. Kuzmin, B. B. Levchenko, O. Yu. Lukina et al.

N. Coppola, S. Grijpink, E. Koffeman, P. Kooijman, E. Maddox, A. Pellegrino, S. Schagen, H. Tiecke, J. J. Velthuis et al.

N. Brümmer, B. Bylsma, L. S. Durkin, and T. Y. Ling

A. M. Cooper-Sarkar, A. Cottrell, R. C. E. Devenish, J. Ferrando, G. Grzelak, S. Patel, M. R. Sutton, and R. Walczak

A. Bertolin, R. Brugnera, R. Carlin, F. Dal Corso, S. Dusini, A. Garfagnini, S. Limentani, A. Longhin, A. Parenti et al.

E. A. Heaphy, F. Metlica, B. Y. Oh, and J. J. Whitmorem

Y. Iga

G. D’Agostini, G. Marini, and A. Nigro

C. Cormackn, J. C. Hart, and N. A. McCubbin

C. Heusch

I. H. Park

N. Pavel

H. Abramowicz, A. Gabareen, S. Kananov, A. Kreisel, and A. Levy

T. Abe, T. Fusayasu, S. Kagawa, T. Kohno, T. Tawara, and T. Yamashita

R. Hamatsu, T. Hirose, M. Inuzuka, S. Kitamurao, K. Matsuzawa, and T. Nishimura

M. Arneodop, M. I. Ferrero, V. Monaco, M. Ruspa, R. Sacchi, and A. Solano

T. Koop, G. M. Levman, J. F. Martin, and A. Mirea

J. M. Butterworth, C. Gwenlan, R. Hall-Wilton, T. W. Jones, M. S. Lightwood, and B. J. West

J. Ciborowskiq, R. Ciesielski, R. J. Nowak, J. M. Pawlak, J. Sztukr, T. Tymieniecka, A. Ukleja, J. Ukleja, and A. F. Żarnecki

M. Adamus and P. Plucinski

Y. Eisenberg, L. K. Gladilins, D. Hochman, and U. Karshon

D. Kçira, S. Lammers, L. Li, D. D. Reeder, A. A. Savin, and W. H. Smith

A. Deshpande, S. Dhawan, V. W. Hughes, and P. B. Straub

S. Bhadra, C. D. Catterall, S. Fourletov, G. Hartner, S. Menary, M. Soares, and J. Standage (ZEUS Collaboration)

  • Argonne National Laboratory, Argonne, Illinois 60439-4815, USA

  • Andrews University, Berrien Springs, Michigan 49104-0380, USA

F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, A. Margotti, R. Nania, F. Palmonari, A. Pesci, G. Sartorelli, and A. Zichichi

  • University and INFN Bologna, Bologna, Italy

U. F. Katzb, O. Kind, U. Meyer, E. Paul, J. Rautenberg, R. Renner, H. Schnurbuschc, A. Stifutkin, J. Tandler, K. C. Voss, M. Wang, and A. Weber

  • Physikalisches Institut der Universität Bonn, Bonn, Germany

R. J. Tapper and M. Wing

  • H. H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom

  • Calabria University, Physics Department and INFN, Cosenza, Italy

  • Chonnam National University, Kwangju, Korea

  • Nevis Laboratories, Columbia University, Irvington on Hudson, New York 10027, USA

  • Institute of Nuclear Physics, Cracow, Poland

D. Szuba and J. Szuba

  • Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, Cracow, Poland

  • Department of Physics, Jagellonian University, Cracow, Poland

U. Fricke, A. Geiser, F. Goebele, P. Göttlicherg, O. Gutsche, T. Haas, W. Hain, G. F. Hartner, S. Hillert, B. Kahle, U. Kötz, H. Kowalskih, G. Kramberger, H. Labes, D. Lelas, B. Löhr, R. Mankel, I.-A. Melzer-Pellmann, M. Moritzi, C. N. Nguyen, D. Notz, M. C. Petruccij, A. Polini, A. Raval, U. Schneekloth, F. Selonke, H. Wessoleck, G. Wolf, C. Youngman, and W. Zeuner

  • Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany

  • DESY Zeuthen, Zeuthen, Germany

  • University and INFN, Florence, Italy

  • Fakultät für Physik der Universität Freiburg i.Br., Freiburg i.Br., Germany

I. O. Skillicorn

  • Department of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom

  • Department of Engineering in Management and Finance, University of Aegean, Greece

K. Wick, A. Ziegler, and Ar. Ziegler

  • Hamburg University, Institute of Experimental Physics, Hamburg, Germany

  • Imperial College London, High Energy Nuclear Physics Group, London, United Kingdom

  • Forschungszentrum Jülich, Institut für Kernphysik, Jülich, Germany

  • Institute of Particle and Nuclear Studies, KEK, Tsukuba, Japan

  • Institute of Physics and Technology of Ministry of Education and Science of Kazakhstan, Almaty, Kazakhstan

  • Kyungpook National University, Taegu, Korea

  • Institut de Physique Nucléaire, Université Catholique de Louvain, Louvain-la-Neuve, Belgium

  • Departamento de Física Teórica, Universidad Autónoma de Madrid, Madrid, Spain

  • Department of Physics, McGill University, Montréal, Québec, Canada H3A 2T8

  • Meiji Gakuin University, Faculty of General Education, Yokohama, Japan

  • Moscow Engineering Physics Institute, Moscow, Russia

A. S. Proskuryakov, L. M. Shcheglova, N. N. Vlasov, and S. A. Zotkin

  • Moscow State University, Institute of Nuclear Physics, Moscow, Russia

L. Wiggers and E. de Wolf

  • NIKHEF and University of Amsterdam, Amsterdam, The Netherlands

  • Physics Department, Ohio State University, Columbus, Ohio 43210, USA

  • Department of Physics, University of Oxford, Oxford, United Kingdom

M. Posocco, L. Stanco, and M. Turcato

  • Dipartimento di Fisica dell’ Università and INFN, Padova, Italy

  • Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA

  • Polytechnic University, Sagamihara, Japan

  • Dipartimento di Fisica, Università “La Sapienza” and INFN, Rome, Italy

  • Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, United Kingdom

  • University of California, Santa Cruz, California 95064, USA

  • Department of Physics, Ewha Womans University, Seoul, Korea

  • Fachbereich Physik der Universität-Gesamthochschule Siegen, Germany

  • Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics, Tel-Aviv University, Tel-Aviv, Israel

  • Department of Physics, University of Tokyo, Tokyo, Japan

  • Tokyo Metropolitan University, Department of Physics, Tokyo, Japan

  • Università di Torino, Dipartimento di Fisica Sperimentale and INFN, Torino, Italy

  • Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7

  • Physics and Astronomy Department, University College London, London, United Kingdom

  • Warsaw University, Institute of Experimental Physics, Warsaw, Poland

  • Institute for Nuclear Studies, Warsaw, Poland

  • Department of Particle Physics, Weizmann Institute, Rehovot, Israel

  • Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA

  • Department of Physics, Yale University, New Haven, Connecticut 06520-8121, USA

  • Department of Physics, York University, Ontario, Canada M3J 1P3

  • aAlso affiliated with University College London, UK.
  • bOn leave from University of Erlangen-Nürnberg, Germany.
  • cPresent address: Sparkasse Koeln, Germany.
  • dPresent address: Dongshin University, Naju, Korea.
  • ePresent address: Max-Planck-Institut für Physik, München/Germany.
  • fPresent address: Fermilab, Batavia, IL, USA.
  • gPresent address: DESY group FEB, Hamburg, Germany.
  • hOn leave from Columbia Univ., Nevis Labs., NY, USA.
  • iPresent address: CERN, Geneva, Switzerland.
  • jPresent address: INFN Perugia, Perugia, Italy.
  • kPresent address: Univ. of Oxford, Oxford, UK.
  • lPresent address: University of Tokyo, Japan
  • mOn leave from The National Science Foundation, Arlington, VA, USA.
  • nPresent address: Univ. of London, Queen Mary College, London, UK.
  • oPresent address: Tokyo Metropolitan University of Health Sciences, Tokyo 116-8551, Japan.
  • pAlso at Università del Piemonte Orientale, Novara, Italy.
  • qAlso at Łódź University, Poland.
  • rPresent address: Łódź University, Poland.
  • sOn leave from MSU, partly supported by University of Wisconsin via the U.S.-Israel BSF.
PDF

Phys. Rev. D 68, 052004 – Published 29 September, 2003

DOI: https://doi.org/10.1103/PhysRevD.68.052004

Abstract

A search for narrow-width resonances that decay into electron+jet or neutrino+jet has been performed with the ZEUS detector at the DESY ep collider HERA operating at center-of-mass energies of 300 and 318 GeV. An integrated e+p luminosity of 114.8pb−1 and e−p luminosity of 16.7pb−1 were used. No evidence for any resonance was found. Limits were derived on the Yukawa coupling λ as a function of the mass of a hypothetical resonance that has arbitrary decay branching ratios into eq or νq. These limits also apply to squarks predicted by R-parity-violating supersymmetry. Limits for the production of leptoquarks described by the Buchmüller-Rückl-Wyler model were also derived for masses up to 400 GeV. For λ=0.1, leptoquark masses up to 290 GeV are excluded.

View figure in article

References (33)

  1. W. Buchmüller, R. Rückl, and D. Wyler, Phys. Lett. B 191, 442 (1987); ibid.448, 320(E)(1999).
  2. J. Butterworth and H. Dreiner, Nucl. Phys. B397, 3 (1993).
  3. ZEUS Collaboration, J. Breitweg et al., Eur. Phys. J. C 16, 253 (2000).
  4. ZEUS Collaboration, J. Breitweg et al., Phys. Rev. D 63, 052002 (2001).
  5. ZEUS Collaboration, “The ZEUS Detector,” DESY Status Report, edited by U. Holm, 1993, available at http://www-zeus.desy.de/bluebook/bluebook.html
  6. N. Harnew et al., Nucl. Instrum. Methods Phys. Res. A 279, 290 (1989); B. Foster et al., Nucl. Phys. B (Proc. Suppl.) 32, 181 (1993); B. FosterNucl. Instrum. Methods Phys. Res. A 338, 254 (1994).
  7. M. Derrick et al., Nucl. Instrum. Methods Phys. Res. A 309, 77 (1991); ibid.A. Andresen et al., 309, 101 (1991); ibid.A. Caldwell et al., 321, 356 (1992); ibid.A. Bernstein et al., 336, 23 (1993).
  8. J. Andruszków et al., e-print DESY-92-066, DESY, 1992; ZEUS Collaboration, M. Derrick et al., Z. Phys. C 63, 391 (1994); J. Andruszków et al., Acta Phys. Pol. B 32, 2025 (2001).
  9. T. Sjöstrand, Comput. Phys. Commun. 135, 238 (2001).
  10. C. Friberg, E. Norrbin, and T. Sjöstrand, Phys. Lett. B 403, 329 (1997).
  11. A. Kwiatkowski, H. Spiesberger, and H.-J. Möhring, Comput. Phys. Commun. 69, 155 (1992).
  12. K. Charchula, G.A. Schuler, and H. Spiesberger, Comput. Phys. Commun. 81, 381 (1994).
  13. H. Spiesberger, “HERACLES and DJANGOH”: Event Generation for ep Interactions at HERA Including Radiative Processes, 1998, available at http://www.desy.de/∼hspiesb/djangoh.html
  14. G. Ingelman, A. Edin, and J. Rathsman, Comput. Phys. Commun. 101, 108 (1997).
  15. H.L. Lai et al., Phys. Rev. D 55, 1280 (1997).
  16. M. Botje, Eur. Phys. J. C 14, 285 (2000).
  17. R. Brun et al., GEANT3, Technical Report CERN-DD/EE/84-1, 1987.
  18. ZEUS Collaboration, J. Breitweg et al., Z. Phys. C 74, 207 (1997).
  19. S. Catani et al., Nucl. Phys. B406, 187 (1993).
  20. S.D. Ellis and D.E. Soper, Phys. Rev. D 48, 3160 (1993).
  21. X. Liu, Ph.D. thesis, Columbia University, 2003.
  22. ZEUS Collaboration, J. Breitweg et al., Eur. Phys. J. C 12, 411 (2000); ZEUS Collaboration, S. Chekanov et al., Phys. Lett. B 539, 197 (2002).
  23. ZEUS Collaboration, S. Chekanov et al., Phys. Rev. D 67, 012007 (2003).
  24. T. Plehn et al., Z. Phys. C 74, 611 (1997).
  25. Z. Kunszt and W.J. Stirling, Z. Phys. C 75, 453 (1997).
  26. H1 Collaboration, C. Adloff et al., Phys. Lett. B 523, 234 (2001).
  27. DØ Collaboration, B. Abbott et al., Phys. Rev. Lett. 79, 4321 (1997); ibid.B. Abbott80, 2051 (1998); DØ Collaboration, V.M. Abazov et al., Phys. Rev. D 64, 092004 (2001); V.M. AbazovPhys. Rev. Lett. 88, 191801 (2002).
  28. CDF Collaboration, F. Abe et al., Phys. Rev. Lett. 79, 4327 (1997).
  29. Leptoquark Limits Combination Working Group, C. Grosso-Pilcher, G. Landsberg, and M. Paterno, e-print hep-ex/9810015.
  30. OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 6, 1 (1999).
  31. L3 Collaboration, M. Acciari et al., Phys. Lett. B 489, 81 (2000).
  32. H1 Collaboration, C. Adloff et al., Eur. Phys. J. C 11, 447 (1999); ibid.C. Adloff14, 553(E)(2000).
  33. A. Djouadi et al., Z. Phys. C 46, 679 (1990).

Outline

Information

Phys. Rev. D 68, 052004– Published 29 September, 2003
  • Received 7 April 2003

© 2003 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation