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Search for pair production of the scalar top quark in muon+tau final states

Collaboration, D0 and M. Abazov, V. and Abbott, B. and S. Acharya, B. and Adams, M. and Adams, T. and D. Alexeev, G. and Alkhazov, G. and Alton, A. and Alverson, G. and Aoki, M. and Askew, A. and Asman, B. and Atkins, S. and Atramentov, O. and Augsten, K. and Avila, C. and BackusMayes, J. and Badaud, F. and Bagby, L. and Baldin, B. and V. Bandurin, D. and Banerjee, S. and Barberis, E. and Baringer, P. and Barreto, J. and F. Bartlett, J. and Bassler, U. and Bazterra, V. and Bean, A. and Begalli, M. and Belanger-Champagne, C. and Bellantoni, L. and B. Beri, S. and Bernardi, G. and Bernhard, R. and Bertram, I. and Besancon, M. and Beuselinck, R. and A. Bezzubov, V. and C. Bhat, P. and Bhatia, S. and Bhatnagar, V. and Blazey, G. and Blessing, S. and Bloom, K. and Boehnlein, A. and Boline, D. and E. Boos, E. and Borissov, G. and Bose, T. and Brandt, A. and Brandt, O. and Brock, R. and Brooijmans, G. and Bross, A. and Brown, D. and Brown, J. and B. 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Elvira, V. and Enari, Y. and Evans, H. and Evdokimov, A. and N. Evdokimov, V. and Facini, G. and Ferbel, T. and Fiedler, F. and Filthaut, F. and Fisher, W. and E. Fisk, H. and Fortner, M. and Fox, H. and Fuess, S. and Garcia-Bellido, A. and A. Garcia-Guerra, G. and Gavrilov, V. and Gay, P. and Geng, W. and Gerbaudo, D. and E. Gerber, C. and Gershtein, Y. and Ginther, G. and Golovanov, G. and Goussiou, A. and D. Grannis, P. and Greder, S. and Greenlee, H. and D. Greenwood, Z. and M. Gregores, E. and Grenier, G. and Gris, Ph. and -F. Grivaz, J. and Grohsjean, A. and Grunendahl, S. and W. Grunewald, M. and Guillemin, T. and Gutierrez, G. and Gutierrez, P. and Haas, A. and Hagopian, S. and Haley, J. and Han, L. and Harder, K. and Harel, A. and M. Hauptman, J. and Hays, J. and Head, T. and Hebbeker, T. and Hedin, D. and Hegab, H. and P. Heinson, A. and Heintz, U. and Hensel, C. and Heredia-De La Cruz, I. and Herner, K. and Hesketh, G. and D. 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Pleier, M. and L. M. Podesta-Lerma, P. and M. Podstavkov, V. and Polozov, P. and V. Popov, A. and Prewitt, M. and Price, D. and Prokopenko, N. and Qian, J. and Quadt, A. and Quinn, B. and S. Rangel, M. and Ranjan, K. and Ratoff, P. N. and Razumov, I. and Renkel, P. and Rijssenbeek, M. and Ripp-Baudot, I. and Rizatdinova, F. and Rominsky, M. and Ross, A. and Royon, C. and Rubinov, P. and Ruchti, R. and Safronov, G. and Sajot, G. and Salcido, P. and Sanchez-Hernandez, A. and P. Sanders, M. and Sanghi, B. and S. Santos, A. and Savage, G. and Sawyer, L. and Scanlon, T. and D. Schamberger, R. and Scheglov, Y. and Schellman, H. and Schliephake, T. and Schlobohm, S. and Schwanenberger, C. and Schwienhorst, R. and Sekaric, J. and Severini, H. and Shabalina, E. and Shary, V. and A. Shchukin, A. and K. Shivpuri, R. and Simak, V. and Sirotenko, V. and Skubic, P. and Slattery, P. and Smirnov, D. and J. Smith, K. and R. Snow, G. and Snow, J. and Snyder, S. and Soldner-Rembold, S. and Sonnenschein, L. and Soustruznik, K. and Stark, J. and Stolin, V. and A. Stoyanova, D. and Strauss, M. and Strom, D. and Stutte, L. and Suter, L. and Svoisky, P. and Takahashi, M. and Tanasijczuk, A. and Titov, M. and V. Tokmenin, V. and -T. Tsai, Y. and Tschann-Grimm, K. and Tsybychev, D. and Tuchming, B. and Tully, C. and Uvarov, L. and Uvarov, S. and Uzunyan, S. and Van Kooten, R. and M. van Leeuwen, W. and Varelas, N. and W. Varnes, E. and A. Vasilyev, I. and Verdier, P. and S. Vertogradov, L. and Verzocchi, M. and Vesterinen, M. and Vilanova, D. and Vokac, P. and D. Wahl, H. and H. L. S. Wang, M. and Warchol, J. and Watts, G. and Wayne, M. and Weber, M. and Weichert, J. and Welty-Rieger, L. and White, A. and Wicke, D. and R. J. Williams, M. and W. Wilson, G. and Wobisch, M. and R. Wood, D. and R. Wyatt, T. and Xie, Y. and Yamada, R. and -C. Yang, W. and Yasuda, T. and A. Yatsunenko, Y. and Ye, W. and Ye, Z. and Yin, H. and Yip, K. and W. Youn, S. and Zhao, T. and Zhou, B. and Zhu, J. and Zielinski, M. and Zieminska, D. and Zivkovic, L. (2012) Search for pair production of the scalar top quark in muon+tau final states. Physics Letters B, 710 (578). ISSN 0370-2693

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Abstract

We present a search for the pair production of scalar top quarks ($\tilde{t}_{1}$), the lightest supersymmetric partners of the top quarks, in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV, using data corresponding to an integrated luminosity of {7.3 $fb^{-1}$} collected with the \dzero experiment at the Fermilab Tevatron Collider. Each scalar top quark is assumed to decay into a $b$ quark, a charged lepton, and a scalar neutrino ($\tilde{\nu}$). We investigate final states arising from $\tilde{t}_{1} \bar{\tilde{t}_{1}} \rightarrow b\bar{b}\mu\tau \tilde{\nu} \tilde{\nu}$ and $\tilde{t}_{1} \bar{\tilde{t}_{1}} \rightarrow b\bar{b}\tau\tau \tilde{\nu} \tilde{\nu}$. With no significant excess of events observed above the background expected from the standard model, we set exclusion limits on this production process in the ($m_{\tilde{t}_{1}}$,$m_{\tilde{\nu}}$) plane.

Item Type: Article
Journal or Publication Title: Physics Letters B
Additional Information: Submitted to Phys. Lett. B
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 58939
Deposited By: ep_importer_pure
Deposited On: 05 Oct 2012 16:54
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 00:14
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/58939

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