Limits on Anomalous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">WW</mml:mi><mml:mi mathvariant="italic">γ</mml:mi></mml:math>Couplings from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">p</mml:mi><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mo>→</mml:mo><mml:mi mathvariant="italic">W</mml:mi><mml:mi mathvariant="italic">γ</mml:mi><mml:mspace/><mml:mo>+</mml:mo><mml:mspace/><mml:mi mathvariant="italic">X</mml:mi></mml:math>Events at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mspace/><mml:mi>√</mml:mi><mml:mi mathvariant="italic">s</mml:mi><mml:mspace/><mml:mo>=</mml:mo><mml:mspace/><mml:mn>1.8</mml:mn><mml:mn/></mml:math>TeV
S. AbachiFermi National Accelerator Laboratory, Batavia, Illinois 60510Braden Keim AbbottNew York University, New York, New York 10003M. AbolinsMichigan State University, East Lansing, Michigan 48824B. S. AcharyaTata Institute of Fundamental Research, Colaba, Bombay 400005, IndiaИ. АдамColumbia University, New York, New York 10027D. L. AdamsRice University, Houston, Texas 77005M. AdamsUniversity of Illinois at Chicago, Chicago, Illinois 60607S. AhnFermi National Accelerator Laboratory, Batavia, Illinois 60510H. AiharaLawrence Berkeley National Laboratory and University of California, Berkeley, California 94720G. ÁlvarezIndiana University, Bloomington, Indiana 47405G. A. AlvesLAFEX, Centro Brasileiro de Pesquisas F sicas, Rio de Janeiro, BrazilE. AmidiNortheastern University, Boston, Massachusetts 02115N. AmosUniversity of Michigan, Ann Arbor, Michigan 48109E. W. AndersonIowa State University, Ames, Iowa 50011S. H. AronsonBrookhaven National Laboratory, Upton, New York 11973R. AsturState University of New York, Stony Brook, New York 11794M. M. BaarmandState University of New York, Stony Brook, New York 11794A. BadenUniversity of Maryland, College Park, Maryland 20742V. BalamuraliUniversity of Notre Dame, Notre Dame, Indiana 46556J. BalderstonUniversity of Hawaii, Honolulu, Hawaii 96822B. BaldinFermi National Accelerator Laboratory, Batavia, Illinois 60510S. BanerjeeTata Institute of Fundamental Research, Colaba, Bombay 400005, IndiaJ. BantlyBrown University, Providence, Rhode Island 02912J. F. BartlettFermi National Accelerator Laboratory, Batavia, Illinois 60510K. BaziziUniversity of Rochester, Rochester, New York 14627A. BelyaevMoscow State University, Moscow, RussiaJ. BendichLawrence Berkeley National Laboratory and University of California, Berkeley, California 94720S. B. BeriUniversity of Panjab, Chandigarh 16-00-14, IndiaI. A. BertramNorthwestern University, Evanston, Illinois 60208V. A. BezzubovInstitute for High Energy Physics, 142-284 Protvino, RussiaP. C. BhatFermi National Accelerator Laboratory, Batavia, Illinois 60510V. BhatnagarUniversity of Panjab, Chandigarh 16-00-14, IndiaM. BhattacharjeeDelhi University, Delhi, India 110007A. BischoffN. N. BiswasUniversity of Notre Dame, Notre Dame, Indiana 46556G. BlazeyNorthern Illinois University, DeKalb, Illinois 60115S. BlessingFlorida State University, Tallahassee, Florida 32306P. C. BloomUniversity of California, Davis, California 95616A. BoehnleinFermi National Accelerator Laboratory, Batavia, Illinois 60510N. I. BojkoInstitute for High Energy Physics, 142-284 Protvino, RussiaF. BorcherdingFermi National Accelerator Laboratory, Batavia, Illinois 60510J. BordersUniversity of Rochester, Rochester, New York 14627C. BoswellUniversity of California, Riverside, California 92521A. BrandtFermi National Accelerator Laboratory, Batavia, Illinois 60510R. BrockMichigan State University, East Lansing, Michigan 48824A. BrossFermi National Accelerator Laboratory, Batavia, Illinois 60510D. BuchholzNorthwestern University, Evanston, Illinois 60208В. С. БуртовойInstitute for High Energy Physics, 142-284 Protvino, RussiaJ. M. ButlerW. CarvalhoLAFEX, Centro Brasileiro de Pesquisas F sicas, Rio de Janeiro, BrazilD. CaseyUniversity of Rochester, Rochester, New York 14627H. Castilla-ValdezCINVESTAV, Mexico City, MexicoD. ChakrabortyState University of New York, Stony Brook, New York 11794S.-M. ChangNortheastern University, Boston, Massachusetts 02115S. V. ChekulaevInstitute for High Energy Physics, 142-284 Protvino, RussiaL.-P. ChenLawrence Berkeley National Laboratory and University of California, Berkeley, California 94720W. ChenState University of New York, Stony Brook, New York 11794S. ChoiSeoul National University, Seoul, KoreaS. ChopraUniversity of Michigan, Ann Arbor, Michigan 48109B. C. ChoudharyUniversity of California, Riverside, California 92521J. H. ChristensonFermi National Accelerator Laboratory, Batavia, Illinois 60510M. ChungUniversity of Illinois at Chicago, Chicago, Illinois 60607D. R. ClaesState University of New York, Stony Brook, New York 11794A. R. ClarkLawrence Berkeley National Laboratory and University of California, Berkeley, California 94720W. G. CobauUniversity of Maryland, College Park, Maryland 20742J. CochranUniversity of California, Riverside, California 92521W. E. CooperFermi National Accelerator Laboratory, Batavia, Illinois 60510C. CretsingerUniversity of Rochester, Rochester, New York 14627D. Cullen-VidalBrown University, Providence, Rhode Island 02912M.A.C. CummingsUniversity of Hawaii, Honolulu, Hawaii 96822D. CuttsUniversidad de los Andes, Bogot a, ColombiaO. I. DahlLawrence Berkeley National Laboratory and University of California, Berkeley, California 94720K. DeUniversity of Texas, Arlington, Texas 76019K. Del SignoreUniversity of Michigan, Ann Arbor, Michigan 48109M. DemarteauUniversity of Arizona, Tucson, Arizona 85721D. DenisovUniversity of Arizona, Tucson, Arizona 85721S. P. DenisovInstitute for High Energy Physics, 142-284 Protvino, RussiaH. T. DiehlUniversity of Arizona, Tucson, Arizona 85721M. DiesburgUniversity of Arizona, Tucson, Arizona 85721G. Di LoretoMichigan State University, East Lansing, Michigan 48824P. DraperUniversidad de Buenos Aires, Buenos Aires, ArgentinaJ. DrinkardUniversity of California, Irvine, California 92717Y. DucrosCEA, DAPNIA/Service de Physique des Particules, CE-SACLAY, FranceL. DudkoMoscow State University, Moscow, RussiaS. R. DugadTata Institute of Fundamental Research, Colaba, Bombay 400005, IndiaD. EdmundsUniversity of Arizona, Tucson, Arizona 85721J. EllisonUniversidad de los Andes, Bogot a, ColombiaV. D. ElviraState University of New York, Stony Brook, New York 11794R. EngelmannUniversidad de los Andes, Bogot a, ColombiaS. C. EnoUniversity of Maryland, College Park, Maryland 20742G. EppleyRice University, Houston, Texas 77005P. ErmolovUniversidad de los Andes, Bogot a, ColombiaO. V. EroshinUniversidad de los Andes, Bogot a, ColombiaВ. Н. ЕвдокимовUniversidad de los Andes, Bogot a, ColombiaS. FaheyUniversidad de los Andes, Bogot a, ColombiaT. FahlandUniversity of Arizona, Tucson, Arizona 85721M. FatygaUniversidad de Buenos Aires, Buenos Aires, ArgentinaM. FatygaUniversidad de los Andes, Bogot a, ColombiaJ. FeatherlyUniversidad de Buenos Aires, Buenos Aires, ArgentinaS. FehérUniversidad de Buenos Aires, Buenos Aires, Argentina
1997lv
ABI
Аннотация
We have measured the $\mathrm{WW}\ensuremath{\gamma}$ gauge boson coupling parameters using $p\overline{p}\ensuremath{\rightarrow}\ensuremath{\ell}\ensuremath{\nu}\ensuremath{\gamma}+X$ ( $\ensuremath{\ell}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}e,\ensuremath{\mu}$) events at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8$ TeV. The data, corresponding to an integrated luminosity of $92.8{\mathrm{pb}}^{\ensuremath{-}1}$, were collected using the D\O{} detector at the Fermilab Tevatron Collider. The measured cross section times branching ratio for $p\overline{p}\ensuremath{\rightarrow}W\ensuremath{\gamma}+X$ with ${p}_{T}^{\ensuremath{\gamma}}>10$ GeV/c and ${R}_{\ensuremath{\ell}\ensuremath{\gamma}}>0.7$ is ${11.3}_{\ensuremath{-}1.5}^{+1.7}\ifmmode\pm\else\textpm\fi{}1.5$ pb, in agreement with the standard model prediction. The 1 degree of freedom 95% confidence level limits on individual CP-conserving parameters are $\ensuremath{-}0.93<\ensuremath{\Delta}\ensuremath{\kappa}<0.94$ and $\ensuremath{-}0.31<\ensuremath{\lambda}<0.29$. Similar limits are set on the CP-violating coupling parameters.
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