Study of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">ZZ</mml:mi><mml:mi>γ</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">Z</mml:mi><mml:mi>γ</mml:mi><mml:mi>γ</mml:mi></mml:math>Couplings in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">Z</mml:mi><mml:mo>(</mml:mo><mml:mi>ν</mml:mi><mml:mi>ν</mml:mi><mml:mo>)</mml

Abachi, S.; Abbott, B.; Abolins, M.; Acharya, B. S.; Адам, И.; Adams, T.; Adams, M. R.; Ahn, Shihyun; Aihara, H.; Alves, G. A.; Amidi, E.; Amos, N.; Anderson, E. W.; Astur, R.; Baarmand, M. M.; Baden, A.; Balamurali, V.; Balderston, J.; Baldin, B.; Banerjee, S.; Bantly, J.; Bartlett, J. F.; Bazizi, K.; Belyaev, A.; Beri, S. B.; Bertram, I.; Bezzubov, V. A.; Bhat, P. C.; Bhatnagar, V.; Bhattacharjee, M.; Biswas, N. N.; Blazey, G.; Blessing, S.; Bloom, P. C.; Boehnlein, A.; Bojko, N. I.; Borcherding, F.; Borders, J.; Boswell, C.; Brandt, A.; Brock, R.; Bross, A.; Buchholz, D.; Буртовой, В. С.; Butler, J. M.; Carvalho, W.; Casey, D.; Castilla‐Valdez, H.; Chakraborty, D.; Chang, S. M.; Chekulaev, S. V.; Chen, L. P.; Chen, W.; Choi, S.; Chopra, S.; Choudhary, B. C.; Christenson, J. H.; Chung, M.; Claes, D. R.; Clark, A. R.; Cobau, W. G.; Cochran, J.; Cooper, W. E.; Cretsinger, C.; Cullen-Vidal, D.; Cummings, M. A.C.; Ćutts, D.; Dahl, O. I.; Davis, K.; De, K.; Signore, K. Del; Demarteau, M.; Denisov, D.; Denisov, S. P.; Diehl, H. T.; Diesburg, M.; Loreto, G. Di; Draper, P.; Drinkard, J.; Ducros, Y.; Dudko, L.; Dugad, S.; Edmunds, D.; Ellison, J.; Elvira, V. D.; Engelmann, R.; Eno, S.; Eppley, G.; Ermolov, P.; Eroshin, O. V.; Евдокимов, В. Н.; Fahland, T.; Fatyga, M.; Featherly, J.; Fehér, S.; Fein, D.; Ferbel, T.; Finocchiaro, G.; Fisk, H. E.; Fisyak, Y.; Flattum, E.; Forden, G. E.; Fortner, M.; Frame, K. C.; Fuess, S.; Gallas, E. J.; Galyaev, A. N.; Gartung, P.; Geld, T. L.; Genik, R. J.; Genser, K.; Gerber, C. E.; Gibbard, B.; Glenn, S.; Gobbi, B.; Goforth, M.; Goldschmidt, A.; Gómez, B.; Gómez, G.; Goncharov, P. I.; Solís, J. L. González; Gordon, H. A.; Goss, L. T.; Goussiou, A. G.; Graf, N.; Grannis, P. D.; Green, D. R.; Green, J.; Greenlee, H.; Grim, G.; Grinstein, S.; Grossman, N.; Grudberg, P.; Grünendahl, S.; Guglielmo, G.; Guida, J. A.; Guida, J. M.; Gupta, A.; Gurzhiev, S. N.; Gutiérrez, P.; Gutnikov, Y. E.; Hadley, N. J.; Haggerty, H.; Hagopian, S.; Hagopian, V.; Hahn, K. S.; Hall, R. E.; Hansen, S.; Hauptman, J. M.; Hedin, D.; Heinson, A. P.; Heintz, U.; Hernández-Montoya, R.; Heuring, T.; Hirosky, R.; Hobbs, J.; Hoeneisen, B.; Hoftun, J. S.; Hsieh, F.; Hu, Ting; Hu, T.; Huehn, T.; Ito, A. S.; James, E.; Jaques, J.; Jerger, S. A.; Jesik, R.; Jiang, Jun; Joffe–Minor, T.; Johns, K. A.; Johnson, M.; Jonckheere, A.; Jones, M.; Jöstlein, H.; Jun, S. Y.; Jung, C. K.; Kahn, S.; Kalbfleisch, G.; Kang, J. S.; Kehoe, R.; Kelly, M.; Kim, C. L.; Kim, S. K.; Klatchko, A.; Klima, B.; Klopfenstein, C.; Klyukhin, V.; Kochetkov, V.; Kohli, J. M.; Koltick, D.; Kostritskiy, A. V.; Kotcher, J.; Kotwal, A.; Kourlas, J.; Kozelov, A. V.; Kozlovski, E. A.; Krane, J.; Krishnaswamy, M. R.; Krzywdziński, S.; Kunori, S.; Lami, S.; Lan, H.; Lander, R.; Landry, F.; Landsberg, G.; Lauer, B.; Leflat, A.; Li, H.; Li, J.; Li-Demarteau, Q. Z.; Lima, J. G.R.; Lincoln, D.; Linn, S.; Linnemann, J.; Lipton, R.; Liu, Q.; Liu, Y. C.; Lobkowicz, F.; Loken, S.; Lökòs, S.; Lueking, L.; Lyon, A. L.; Maciel, A. K.A.; Madaras, R. J.; Madden, R.; Magaña-Mendoza, L.; Mani, S.; Mao, H. S.; Markeloff, R.; Markosky, L. A.; Marshall, T.; Martin, M.; Mauritz, K. M.; May, B.; Mayorov, A. A.; McCarthy, R. L.; McDonald, John; McKibben, T.; McKinley, J.; McMahon, T. R.; Melanson, H. L.; Merkin, M.; Merritt, K. W.; Miettinen, H.; Mincer, A. I.; Miranda, J. M. De; Mishra, C. S.; Mokhov, N.; Mondal, N. K.; Montgomery, H. E.; Mooney, P.; Motta, H. da; Murphy, C.; Nang, F.; Narain, M.; Narasimham, V. S.; Narayanan, A.; Neal, H. A.; Negret, J. P.; Némethy, P.; Nešić, D.; Nicola, M.; Norman, D.; Oesch, L.; Oguri, V.; Oltman, E.; Oshima, N.; Owen, D.; Padley, P.; Pang, M.; Para, A.; Park, Y. M.; Partridge, R.; Parua, N.; Paterno, M.; Perkins, J.; Peters, Michael; Piegaia, R.; Piekarz, H.; Pischalnikov, Y.; Podstavkov, V. M.; Pope, B. G.; Prosper, H.; Protopopescu, S.; Pušeljić, D. L.; Qian, J.; Quintas, P. Z.; Raja, R.; Rajagopalan, S.; Ramírez, O.; Rapidis, P. A.; Rasmussen, L.; Reucroft, S.; Rijssenbeek, M.; Rockwell, T.; Roe, N. A.; Rubinov, P.; Ruchti, R.; Rutherfoord, J. P.; Sánchez-Hernández, A.; Santoro, A.; Sawyer, L.; Schamberger, R. D.; Schellman, H.; Sculli, J.; Shabalina, E.; Shaffer, C.; Shankar, H. C.; Shivpuri, R. K.; Shupe, M. A.; Singh, H.; Singh, J. B.; Sirotenko, V.; Smart, W.; Smith, A.; Smith, R. P.; Snihur, R.; Snow, G. R.; Snow, J.; Snyder, S.; Solomon, J.; Sood, P. M.; Sosebee, M.; Sotnikova, N.; Souza, M.; Spadafora, A. L.; Stephens, R. W.; Stevenson, M. L.; Stewart, David J.; Stoianova, D. A.; Stoker, D. P.; Strauss, M.; Streets, K.; Strovink, M.; Sznajder, A.; Tamburello, P.; Tarazi, J.; Tartaglia, M.; Thomas, T. L.; Thompson, J.; Trippe, T. G.; Tuts, P. M.; Varelas, N.; Varnes, E. W.; Vititoe, D.; Volkov, A.; Vorobiev, A. P.; Wahl, H. D.; Wang, G.; Warchol, J.; Watts, G.; Wayne, M.; Weerts, H.; White, A.; White, J. T.; Wightman, J. A.; Willis, S.; Wimpenny, S.; Wirjawan, J. V.D.; Womersley, J.; Won, E.; Wood, D.; Xu, H.; Yamada, R.; Yamin, P.; Yanagisawa, C.; Yang, J.; Yasuda, T.; Yepes, P.; Yoshikawa, C.; Youssef, S.; Yu, J.; Yu, Y.; Zhu, Q. M.; Zhu, Z. H.; Ziemińska, D.; Ziemiński, A.; Zverev, E. G.; Zylberstejn, A.

doi:10.1103/physrevlett.78.3640

Cited by 40 publications

(24 citation statements)

References 18 publications

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“…It should be noted that though there is strong interference between the two CP{conserving anomalous couplings and between the two CP{violating couplings, the interference between CP{violating and CP{conserving couplings is negligible. We also show the limits obtained by D0 [22] and the region of parameter space allowed by unitarity. The di erence in orientation between our limit and the Tevatron contours [22,23] results from the fact that the dimension{8 couplings (h Z 2 , h Z 4 ) have a stronger energy dependence than the dimension{6 couplings (h Z 1 , h Z 3 ) and the Tevatron e ective center{ of{mass energy is higher than that of LEP.…”

Section: Zz Couplingsmentioning

confidence: 96%

Search for new physics in energetic single photon production in e+e− annihilation at the Z resonance

et al. 1997

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Using a sample of e + e annihilation events collected with the L3 detector at the Z resonance corresponding to an integrated luminosity of 137 pb 1 , we have searched for anomalous production of X nal states where X represents stable, weakly interacting particles and the photon energy is greater than 15 GeV. The sample of events found is consistent with Standard Model expectations. Upper limits are set on Z couplings, the neutrino magnetic moment, and the branching ratio for Z ! X.

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Section: Zz Couplingsmentioning

confidence: 96%

Search for new physics in energetic single photon production in e+e− annihilation at the Z resonance

et al. 1997

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“…Following offline reconstruction, we require each EM object to: (i) deposit more than 95% of its energy in the EM calorimeter; (ii) have an energy deposition pattern consistent with that expected for an EM object; and (iii) be isolated [17]. The efficiency for these selections, based on Z !…”

mentioning

confidence: 99%

“…To determine the hard-scattering vertex, we calculate the most probable direction of each EM object using the transverse and longitudinal segmentation of the EM calorimeter [17]. Among all the reconstructed vertices in the event, we choose the one that best matches these directions.…”

mentioning

confidence: 99%

Search for Large Extra Dimensions in Dielectron and Diphoton Production

Abbott¹,

Abolins²,

Abramov³

et al. 2001

Phys. Rev. Lett.

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We report a search for effects of large extra spatial dimensions in ppbar collisions at a center-of-mass energy of 1.8 TeV with the DZero detector, using events containing a pair of electrons or photons. The data are in good agreement with the expected background and do not exhibit evidence for large extra dimensions. We set the most restrictive lower limits to date, at the 95% confidence level, on the effective Planck scale between 1.0 TeV and 1.4 TeV for several formalisms and numbers of extra dimensions.Comment: 6 pages, 2 figures, submitted to Phys. Rev. Let

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“…The importance of photon pointing was appreciated in some Run I analyses, particularly the studies of Z(νν)γ [123] and γγ [124]. We have utilized the fine longitudinal segmentation of the DØ EM calorimeter (which has four longitudinal layers) by calculating the c.o.g.…”

Section: Photon Pointing At Dømentioning

confidence: 99%

“…The spatial resolution of the c.o.g. finding algorithm in four calorimeter layers averaged over central (CC) and forward (EC) rapidity range, as well as the geometrical parameters of the calorimeter layers are given in Table XIII C. This study resulted in an algorithm, EMVTX [125], that has been used in several DØ analyses involving photons [123,124]. In order to study the improvement of photon pointing made possible by the utilization of the fine spatial resolution of the preshower detector, we have written a toy Monte Carlo (MC) simulation package which takes into account detector geometry, position error in calorimeter and preshower, as well as the primary vertex distribution.…”

Section: Photon Pointing At Dømentioning

confidence: 99%

Report of the Beyond the MSSM Subgroup for the Tevatron Run II SUSY/Higgs Workshop

Rizzo¹

2000

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Abstract.There are many low-energy models of supersymmetry breaking parameters which are motivated by theoretical and experimental considerations. Some of these approaches have gained more proponents than others over time, and so have been studied in greater detail. In this contribution we discuss some of the lesser-known theories of low-energy supersymmetry, and outline their phenomenological consequences. In some cases, these theories have more gauge symmetry or particle content than the Minimal Supersymmetric Standard Model. In other cases, the parameters of the Lagrangian are unusual compared to commonly accepted norms (e.g., Wino LSP, heavy gluino LSP, light gluino, etc.). The phenomenology of supersymmetry varies greatly between the different models. Correspondingly, particular aspects of the detectors assume greater or lesser importance. Detection of supersymmetry and the determination of all parameters may well depend upon having the widest possible view of supersymmetry phenomenology. I INTRODUCTIONMost of the studies performed to assess the discovery reach for supersymmetry and most of the current limits on the masses of supersymmetric particles have been obtained assuming R-parity conservation, the minimal matter content of the Minimal Supersymmetric Model (MSSM), and universal boundary conditions at M U for the soft-SUSY-breaking parameters: m 0 for the scalar masses; M 0 for the SU(3),SU(2) and U(1) gaugino masses M 3,2,1 ; and A 0 for the tri-linear scalar field couplings. Additional parameters of the MSSM include: tan β, the ratio of Higgs field vacuum expectation values H u / H d ; µ, the coefficient of the bilinear H u H d superpotential term; and B, which specifies the strength of the corresponding H u H d scalar field mixing term. By requiring correct electroweak symmetry breaking after evolution down to the scale m Z , the magnitude of µ is fixed and only its sign remains undetermined.This boundary condition scenario is often referred to as the mSUGRA or CMSSM model. If unification of the τ and b Yukawa couplings at M U is required, then correct EWSB strongly constrains tan β as well. While the matter content and boundary conditions of the MSSM have the virtue of simplicity and can be reasonably motivated in the context of several types of gravity-mediated supersymmetry breaking, other possibilities should certainly be considered. For a model with MSSM matter content and R-parity conservation, the most general form of soft-SUSY-breaking allows for a total of 124 parameters (not counting certain additional parameters expected to be suppressed by 1/M U factors). This is to be compared to the 19 parameters of the Standard Model. The most general form of R-parity violation increases the parameter count to 315. Some of these parameters are associated with phases and CP violation. A summary appears in Table 1. A final parameter is the mass of the gravitino, G. If the scale of supersymmetry breaking is sufficiently low, m G can be small enough that it is the LSP. In particular, this is the expectati...

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Study of theZZγandZγγCouplings inZ(νν)

Cited by 40 publications

References 18 publications

Search for new physics in energetic single photon production in e+e− annihilation at the Z resonance

Search for new physics in energetic single photon production in e+e− annihilation at the Z resonance

Search for Large Extra Dimensions in Dielectron and Diphoton Production

Report of the Beyond the MSSM Subgroup for the Tevatron Run II SUSY/Higgs Workshop

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