Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp-bar Collisions at sqrt[s]=1.96 TeV
Models of maximal flavor violation (MxFV) in elementary particle physics may contain at least one new scalar SU(2) doublet field ΦFV=(η[superscript 0],η[superscript +]) that couples the first and third generation quarks (q[subscript 1], q[subscript 3]) via a Lagrangian term L[subscript FV]=ξ[subscri...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/1721.1/51852 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-9746-4594 https://orcid.org/0000-0002-0869-5631 |
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| author | Miles, Christopher J. Leonardo, N. Knuteson, Bruce O. Klute, Markus Iyutin, Boris Henderson, C. Hahn, Kristian Allan Gomez-Ceballos, Guillelmo Choudalakis, Georgios Bolshov, Arkadiy Paus, Christoph M. E. Makhoul, Khaldoun Bauer, Gerry P |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Miles, Christopher J. Leonardo, N. Knuteson, Bruce O. Klute, Markus Iyutin, Boris Henderson, C. Hahn, Kristian Allan Gomez-Ceballos, Guillelmo Choudalakis, Georgios Bolshov, Arkadiy Paus, Christoph M. E. Makhoul, Khaldoun Bauer, Gerry P |
| author_sort | Miles, Christopher J. |
| collection | MIT |
| description | Models of maximal flavor violation (MxFV) in elementary particle physics may contain at least one new scalar SU(2) doublet field ΦFV=(η[superscript 0],η[superscript +]) that couples the first and third generation quarks (q[subscript 1], q[subscript 3]) via a Lagrangian term L[subscript FV]=ξ[subscript 13]Φ[subscript FV]q[subscript 1]q[subscript 3]. These models have a distinctive signature of same-charge top-quark pairs and evade flavor-changing limits from meson mixing measurements. Data corresponding to 2 fb[superscript -1] collected by the Collider Dectector at Fermilab II detector in pp̅ collisions at √s=1.96 TeV are analyzed for evidence of the MxFV signature. For a neutral scalar η[superscript 0] with m[subscript η[superscript 0]]=200 GeV/c[superscript 2] and coupling ξ[subscript 13]=1, ∼11 signal events are expected over a background of 2.1±1.8 events. Three events are observed in the data, consistent with background expectations, and limits are set on the coupling ξ[subscript 13] for m[subscript η[superscript 0]]=180–300 GeV/c[superscript 2]. |
| first_indexed | 2024-09-23T08:33:50Z |
| format | Article |
| id | mit-1721.1/51852 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:33:50Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/518522023-02-26T08:11:08Z Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp-bar Collisions at sqrt[s]=1.96 TeV Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp̅ Collisions at √s=1.96 TeV Miles, Christopher J. Leonardo, N. Knuteson, Bruce O. Klute, Markus Iyutin, Boris Henderson, C. Hahn, Kristian Allan Gomez-Ceballos, Guillelmo Choudalakis, Georgios Bolshov, Arkadiy Paus, Christoph M. E. Makhoul, Khaldoun Bauer, Gerry P Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Paus, Christoph M. E. Miles, Christopher J. Makhoul, K. Leonardo, N. Knuteson, Bruce O. Klute, Markus Iyutin, Boris Henderson, C. Hahn, Kristian Allan Gomez-Ceballos, Guillelmo Choudalakis, Georgios Bolshov, Arkadiy Bauer, Gerry P. Paus, Christoph M. E. Models of maximal flavor violation (MxFV) in elementary particle physics may contain at least one new scalar SU(2) doublet field ΦFV=(η[superscript 0],η[superscript +]) that couples the first and third generation quarks (q[subscript 1], q[subscript 3]) via a Lagrangian term L[subscript FV]=ξ[subscript 13]Φ[subscript FV]q[subscript 1]q[subscript 3]. These models have a distinctive signature of same-charge top-quark pairs and evade flavor-changing limits from meson mixing measurements. Data corresponding to 2 fb[superscript -1] collected by the Collider Dectector at Fermilab II detector in pp̅ collisions at √s=1.96 TeV are analyzed for evidence of the MxFV signature. For a neutral scalar η[superscript 0] with m[subscript η[superscript 0]]=200 GeV/c[superscript 2] and coupling ξ[subscript 13]=1, ∼11 signal events are expected over a background of 2.1±1.8 events. Three events are observed in the data, consistent with background expectations, and limits are set on the coupling ξ[subscript 13] for m[subscript η[superscript 0]]=180–300 GeV/c[superscript 2]. Academy of Finland Slovak R&D Agency Programa Consolider-Ingenio 2010, Spain Ministerio de Ciencia e Innovación, Spain Russian Foundation for Basic Research Institut National de Physique Nucleaire et Physique des Particules/CNRS Royal Society, United Kingdom Science and Technology Facilities Council, United Kingdom Korean Research Foundation Korean Science and Engineering Foundation Bundesministerium für Bildung und Forschung, Germany Alfred P. Sloan Foundation Swiss National Science Foundation National Science Council of the Republic of China Natural Sciences and Engineering Research Council of Canada Ministry of Education, Culture, Sports, Science and Technology of Japan Italian Istituto Nazionale di Fisica Nucleare National Science Foundation United States Department of Energy 2010-03-01T17:56:59Z 2010-03-01T17:56:59Z 2009-01 2008-09 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/51852 CDF Collaboration et al. “Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp-bar Collisions at s=1.96 TeV.” Physical Review Letters 102.4 (2009): 041801. © 2009 The American Physical Society https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-9746-4594 https://orcid.org/0000-0002-0869-5631 en_US http://dx.doi.org/10.1103/PhysRevLett.102.041801 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Miles, Christopher J. Leonardo, N. Knuteson, Bruce O. Klute, Markus Iyutin, Boris Henderson, C. Hahn, Kristian Allan Gomez-Ceballos, Guillelmo Choudalakis, Georgios Bolshov, Arkadiy Paus, Christoph M. E. Makhoul, Khaldoun Bauer, Gerry P Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title | Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_full | Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_fullStr | Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_full_unstemmed | Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_short | Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in pp-bar Collisions at sqrt[s]=1.96 TeV |
| title_sort | search for maximal flavor violating scalars in same charge lepton pairs in pp bar collisions at sqrt s 1 96 tev |
| url | http://hdl.handle.net/1721.1/51852 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-9746-4594 https://orcid.org/0000-0002-0869-5631 |
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