14 results on '"Shafi Q"'
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2. Light sterile neutrinos, dark matter, and new resonances in a $U(1)$ extension of the MSSM
- Author
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Hebbar, A., Lazarides, G., and Shafi, Q.
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,High Energy Physics::Experiment ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
We present $\psi'$MSSM, a model based on a $U(1)_{\psi'}$ extension of the minimal supersymmetric standard model. The gauge symmetry $U(1)_{\psi'}$, also known as $U(1)_N$, is a linear combination of the $U(1)_\chi$ and $U(1)_\psi$ subgroups of $E_6$. The model predicts the existence of three sterile neutrinos with masses $\lesssim 0.1~{\rm eV}$, if the $U(1)_{\psi'}$ breaking scale is of order 10 TeV. Their contribution to the effective number of neutrinos at nucleosynthesis is $\Delta N_{\nu}\simeq 0.29$. The model can provide a variety of possible cold dark matter candidates including the lightest sterile sneutrino. If the $U(1)_{\psi'}$ breaking scale is increased to $10^3~{\rm TeV}$, the sterile neutrinos, which are stable on account of a $Z_2$ symmetry, become viable warm dark matter candidates. The observed value of the standard model Higgs boson mass can be obtained with relatively light stop quarks thanks to the D-term contribution from $U(1)_{\psi'}$. The model predicts diquark and diphoton resonances which may be found at an updated LHC. The well-known $\mu$ problem is resolved and the observed baryon asymmetry of the universe can be generated via leptogenesis. The breaking of $U(1)_{\psi'}$ produces superconducting strings that may be present in our galaxy. A $U(1)$ R symmetry plays a key role in keeping the proton stable and providing the light sterile neutrinos., Comment: 10 pages including 6 figures, uses Revtex, version published in Phys. Rev. D
- Published
- 2017
3. Diphoton resonances in a U(1)_{B-L} extension of the minimal supesymmetric standard model
- Author
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Lazarides, G. and Shafi, Q.
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,High Energy Physics::Experiment - Abstract
Inspired by the 750 GeV diphoton state recently reported by ATLAS and CMS, we propose a U(1)_{B-L} extension of the MSSM which predicts the existence of four spin zero resonance states that are degenerate in mass in the supersymmetric limit. Vector-like fields, a gauge singlet field, as well as the MSSM Higgsinos are prevented from acquiring arbitrary large masses by a U(1) R-symmetry. Indeed, these masses can be considerably lighter than the Z' gauge boson mass. Depending on kinematics the resonance states could decay into right handed neutrinos and sneutrinos, and/or MSSM Higgs fields and Higgsinos with total decay widths in the multi-GeV range., 5 pages including 2 figures, uses Revtex, version published in Physical Review D
- Published
- 2016
4. Higgs Working Group Report of the Snowmass 2013 Community Planning Study
- Author
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Dawson, S., Gritsan, A., Logan, H., Qian, J., Tully, C., Van Kooten, R., Ajaib, A., Anastassov, A., Anderson, I., Asner, D., Bake, O., Barger, V., Barklow, T., Batell, B., Battaglia, M., Berge, S., Blondel, A., Bolognesi, S., Brau, J., Brownson, E., Cahill-Rowley, M., Calancha-Paredes, C., Chen, C. -Y., Chou, W., Clare, R., Cline, D., Craig, N., Cranmer, K., de Gruttola, M., Elagin, A., Essig, R., Everett, L., Feng, E., Fujii, K., Gainer, J., Gao, Y., Gogoladze, I., Gori, S., Goncalo, R., Graf, N., Grojean, C., Guindon, S., Haber, H., Han, T., Hanson, G., Harnik, R., Heinemeyer, S., Heintz, U., Hewett, J., Ilchenko, Y., Ishikawa, A., Ismail, A., Jain, V., Janot, P., Kanemura, S., Kawada, S., Kehoe, R., Klute, M., Kotwal, A., Krueger, K., Kukartsev, G., Kumar, K., Kunkle, J., Kurata, M., Lewis, I., Li, Y., Linssen, L., Lipeles, E., Lipton, R., Liss, T., List, J., Liu, T., Liu, Z., Low, I., Ma, T., Mackenzie, P., Mellado, B., Melnikov, K., Miyamoto, A., Moortgat-Pick, G., Mourou, G., Narain, M., Neal, H., Nielsen, J., Okada, N., Okawa, H., Olsen, J., Ono, H., Onyisi, P., Parashar, N., Peskin, M., Petriello, F., Plehn, T., Pollard, C., Potter, C., Prokofiev, K., Rauch, M., Rizzo, T., Robens, T., Rodriguez, V., Roloff, P., Ruiz, R., Sanz, V., Sayre, J., Shafi, Q., Shaughnessy, G., Sher, M., Simon, F., Solyak, N., Strube, J., Stupak, J., Su, S., Suehara, T., Tanabe, T., Tajima, T., Telnov, V., Tian, J., Thomas, S., Thomson, M., Tsumura, K., Un, C., Velasco, M., Wagner, C., Wang, S., Watanuki, S., Weiglein, G., Whitbeck, A., Yagyu, K., Yao, W., Yokoya, H., Zenz, S., Zerwas, D., Zhang, Y., Zhou, Y., Institut Laue-Langevin (ILL), ILL, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Service de Physique Théorique (SPhT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Massachusetts Institute of Technology (MIT), European Organization for Nuclear Research (CERN), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut für Theoretische Physik, Universität Heidelberg [Heidelberg], Karlsruhe Institute of Technology (KIT), Association of Computer Electronics and Electrical Engineers (ACEEE), Institute of Doctors Engineers and Scientists, Laboratoire catalyse et spectrochimie (LCS), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), Institut des Sciences de la Terre de Paris (iSTeP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Atlas, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Universität Heidelberg [Heidelberg] = Heidelberg University, Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,Physics::Instrumentation and Detectors ,[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] ,High Energy Physics::Lattice ,High Energy Physics::Phenomenology ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,FOS: Physical sciences ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,High Energy Physics - Experiment - Abstract
52 p.; International audience; This report summarizes the work of the Energy Frontier Higgs Boson working group of the 2013 Community Summer Study (Snowmass). We identify the key elements of a precision Higgs physics program and document the physics potential of future experimental facilities as elucidated during the Snowmass study. We study Higgs couplings to gauge boson and fermion pairs, double Higgs production for the Higgs self-coupling, its quantum numbers and $C\!P$-mixing in Higgs couplings, the Higgs mass and total width, and prospects for direct searches for additional Higgs bosons in extensions of the Standard Model. Our report includes projections of measurement capabilities from detailed studies of the Compact Linear Collider (CLIC), a Gamma-Gamma Collider, the International Linear Collider (ILC), the Large Hadron Collider High-Luminosity Upgrade (HL-LHC), Very Large Hadron Colliders up to 100 TeV (VLHC), a Muon Collider, and a Triple-Large Electron Positron Collider (TLEP).
- Published
- 2013
5. Fundamental Physics at the Intensity Frontier
- Author
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Hewett, J.L., Weerts, H., Brock, R., Butler, J.N., Casey, B.C.K., Collar, J., de Gouvea, A., Essig, R., Grossman, Y., Haxton, W., Jaros, J.A., Jung, C.K., Lu, Z.T., Pitts, K., Ligeti, Z., Patterson, J.R., Ramsey-Musolf, M., Ritchie, J.L., Roodman, A., Scholberg, K., Wagner, C.E.M., Zeller, G.P., Aefsky, S., Afanasev, A., Agashe, K., Albright, C., Alonso, J., Ankenbrandt, C., Aoki, M., Arguelles, C.A., Arkani-Hamed, N., Armendariz, J.R., Armendariz-Picon, C., Arrieta Diaz, E., Asaadi, J., Asner, D.M., Babu, K.S., Bailey, K., Baker, O., Balantekin, B., Baller, B., Bass, M., Batell, B., Beacham, J., Behr, J., Berger, N., Bergevin, M., Berman, E., Bernstein, R., Bevan, A.J., Bishai, M., Blanke, M., Blessing, S., Blondel, A., Blum, T., Bock, G., Bodek, A., Bonvicini, G., Bossi, F., Boyce, J., Breedon, R., Breidenbach, M., Brice, S.J., Briere, R.A., Brodsky, S., Bromberg, C., Bross, A., Browder, T.E., Bryman, D.A., Buckley, M., Burnstein, R., Caden, E., Campana, P., Carlini, R., Carosi, G., Castromonte, C., Cenci, R., Chakaberia, I., Chen, Mu-Chun, Cheng, C.H., Choudhary, B., Christ, N.H., Christensen, E., Christy, M.E., Chupp, T.E., Church, E., Cline, D.B., Coan, T.E., Coloma, P., Comfort, J., Coney, L., Cooper, J., Cooper, R.J., Cowan, R., Cowen, D.F., Cronin-Hennessy, D., Datta, A., Davies, G.S., Demarteau, M., DeMille, D.P., Denig, A., Dermisek, R., Deshpande, A., Dewey, M.S., Dharmapalan, R., Dhooghe, J., Dietrich, M.R., Diwan, M., Djurcic, Z., Dobbs, S., Duraisamy, M., Dutta, Bhaskar, Duyang, H., Dwyer, D.A., Eads, M., Echenard, B., Elliott, S.R., Escobar, C., Fajans, J., Farooq, S., Faroughy, C., Fast, J.E., Feinberg, B., Felde, J., Feldman, G., Fierlinger, P., Fileviez Perez, P., Filippone, B., Fisher, P., Fleming, B.T., Flood, K.T., Forty, R., Frank, M.J., Freyberger, A., Friedland, A., Gandhi, R., Ganezer, K.S., Garcia, A., Garcia, F.G., Gardner, S., Garrison, L., Gasparian, A., Geer, S., Gehman, V.M., Gershon, T., Gilchriese, M., Ginsberg, C., Gogoladze, I., Gonderinger, M., Goodman, M., Gould, H., Graham, M., Graham, P.W., Gran, R., Grange, J., Gratta, G., Green, J.P., Greenlee, H., Group, R.C., Guardincerri, E., Gudkov, V., Guenette, R., Haas, A., Hahn, A., Han, T., Handler, T., Hardy, J.C., Harnik, R., Harris, D.A., Harris, F.A., Harris, P.G., Hartnett, J., He, B., Heckel, B.R., Heeger, K.M., Henderson, S., Hertzog, D., Hill, R., Hinds, E.A., Hitlin, D.G., Holt, R.J., Holtkamp, N., Horton-Smith, G., Huber, P., Huelsnitz, W., Imber, J., Irastorza, I., Jaeckel, J., Jaegle, I., James, C., Jawahery, A., Jensen, D., Jessop, C.P., Jones, B., Jostlein, H., Junk, T., Kagan, A.L., Kalita, M., Kamyshkov, Y., Kaplan, D.M., Karagiorgi, G., Karle, A., Katori, T., Kayser, B., Kephart, R., Kettell, S., Kim, Y.K., Kirby, M., Kirch, K., Klein, J., Kneller, J., Kobach, A., Kohl, M., Kopp, J., Kordosky, M., Korsch, W., Kourbanis, I., Krisch, A.D., Krizan, P., Kronfeld, A.S., Kulkarni, S., Kumar, K.S., Kuno, Y., Kutter, T., Lachenmaier, T., Lamm, M., Lancaster, J., Lancaster, M., Lane, C., Lang, K., Langacker, P., Lazarevic, S., Le, T., Lee, K., Lesko, K.T., Li, Y., Lindgren, M., Lindner, A., Link, J., Lissauer, D., Littenberg, L.S., Littlejohn, B., Liu, C.Y., Loinaz, W., Lorenzon, W., Louis, W.C., Lozier, J., Ludovici, L., Lueking, L., Lunardini, C., MacFarlane, D.B., Machado, P.A.N., Mackenzie, P.B., Maloney, J., Marciano, W.J., Marsh, W., Marshak, M., Martin, J.W., Mauger, C., McFarland, K.S., McGrew, C., McLaughlin, G., McKeen, D., McKeown, R., Meadows, B.T., Mehdiyev, R., Melconian, D., Merkel, H., Messier, M., Miller, J.P., Mills, G., Minamisono, U.K., Mishra, S.R., Mocioiu, I., Sher, S.Moed, Mohapatra, R.N., Monreal, B., Moore, C.D., Morfin, J.G., Mousseau, J., Moustakas, L.A., Mueller, G., Mueller, P., Muether, M., Mumm, H.P., Munger, C., Murayama, H., Nath, P., Naviliat-Cuncin, O., Nelson, J.K., Neuffer, D., Nico, J.S., Norman, A., Nygren, D., Obayashi, Y., O'Connor, T.P., Okada, Y., Olsen, J., Orozco, L., Orrell, J.L., Osta, J., Pahlka, B., Paley, J., Papadimitriou, V., Papucci, M., Parke, S., Parker, R.H., Parsa, Z., Partyka, K., Patch, A., Pati, J.C., Patterson, R.B., Pavlovic, Z., Paz, Gil, Perdue, G.N., Perevalov, D., Perez, G., Petti, R., Pettus, W., Piepke, A., Pivovaroff, M., Plunkett, R., Polly, C.C., Pospelov, M., Povey, R., Prakesh, A., Purohit, M.V., Raby, S., Raaf, J.L., Rajendran, R., Rajendran, S., Rameika, G., Ramsey, R., Rashed, A., Ratcliff, B.N., Rebel, B., Redondo, J., Reimer, P., Reitzner, D., Ringer, F., Ringwald, A., Riordan, S., Roberts, B.L., Roberts, D.A., Robertson, R., Robicheaux, F., Rominsky, M., Roser, R., Rosner, J.L., Rott, C., Rubin, P., Saito, N., Sanchez, M., Sarkar, S., Schellman, H., Schmidt, B., Schmitt, M., Schmitz, D.W., Schneps, J., Schopper, A., Schuster, P., Schwartz, A.J., Schwarz, M., Seeman, J., Semertzidis, Y.K., Seth, K.K., Shafi, Q., Shanahan, P., Sharma, R., Sharpe, S.R., Shiozawa, M., Shiltsev, V., Sigurdson, K., Sikivie, P., Singh, J., Sivers, D., Skwarnicki, T., Smith, N., Sobczyk, J., Sobel, H., Soderberg, M., Song, Y.H., Soni, A., Souder, P., Sousa, A., Spitz, J., Stancari, M., Stavenga, G.C., Steffen, J.H., Stepanyan, S., Stoeckinger, D., Stone, S., Strait, J., Strassler, M., Sulai, I.A., Sundrum, R., Svoboda, R., Szczerbinska, B., Szelc, A., Takeuchi, T., Tanedo, P., Taneja, S., Tang, J., Tanner, D.B., Tayloe, R., Taylor, I., Thomas, J., Thorn, C., Tian, X., Tice, B.G., Tobar, M., Tolich, N., Toro, N., Towner, I.S., Tsai, Y., Tschirhart, R., Tunnell, C.D., Tzanov, M., Upadhye, A., Urheim, J., Vahsen, S., Vainshtein, A., Valencia, E., Van de Water, R.G., Van de Water, R.S., Velasco, M., Vogel, J., Vogel, P., Vogelsang, W., Wah, Y.W., Walker, D., Weiner, N., Weltman, A., Wendell, R., Wester, W., Wetstein, M., White, C., Whitehead, L., Whitmore, J., Widmann, E., Wiedemann, G., Wilkerson, J., Wilkinson, G., Wilson, P., Wilson, R.J., Winter, W., Wise, M.B., Wodin, J., Wojcicki, S., Wojtsekhowski, B., Wongjirad, T., Worcester, E., Wurtele, J., Xin, T., Xu, J., Yamanaka, T., Yamazaki, Y., Yavin, I., Yeck, J., Yeh, M., Yokoyama, M., Yoo, J., Young, A., Zimmerman, E., Zioutas, K., Zisman, M., Zupan, J., and Zwaska, R.
- Subjects
Nuclear Theory ,High Energy Physics::Phenomenology ,High Energy Physics::Experiment ,Nuclear Experiment ,Particle Physics - Experiment - Abstract
The Proceedings of the 2011 workshop on Fundamental Physics at the Intensity Frontier. Science opportunities at the intensity frontier are identified and described in the areas of heavy quarks, charged leptons, neutrinos, proton decay, new light weakly-coupled particles, and nucleons, nuclei, and atoms. The Proceedings of the 2011 workshop on Fundamental Physics at the Intensity Frontier. Science opportunities at the intensity frontier are identified and described in the areas of heavy quarks, charged leptons, neutrinos, proton decay, new light weakly-coupled particles, and nucleons, nuclei, and atoms.
- Published
- 2012
6. Fundamental Physics at the Intensity Frontier
- Author
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Hewett, J. L., Weerts, H., Brock, R., Butler, J. N., Casey, B. C. K., Collar, J., Gouvea, A., Essig, R., Grossman, Y., Haxton, W., Jaros, J. A., Jung, C. K., Lu, Z. T., Pitts, K., Ligeti, Z., Patterson, J. R., Ramsey-Musolf, M., Ritchie, J. L., Roodman, A., Scholberg, K., Wagner, C. E. M., Zeller, G. P., Aefsky, S., Afanasev, A., Agashe, K., Albright, C., Alonso, J., Ankenbrandt, C., Aoki, M., Arguelles, C. A., Arkani-Hamed, N., Armendariz, J. R., Armendariz-Picon, C., Arrieta Diaz, E., Asaadi, J., Asner, D. M., Babu, K. S., Bailey, K., Baker, O., Balantekin, B., Baller, B., Bass, M., Batell, B., Beacham, J., Behr, J., Berger, N., Bergevin, M., Berman, E., Bernstein, R., Bevan, A. J., Bishai, M., Blanke, M., Blessing, S., Blondel, A., Blum, T., Bock, G., Bodek, A., Bonvicini, G., Bossi, F., Boyce, J., Breedon, R., Breidenbach, M., Brice, S. J., Briere, R. A., Brodsky, S., Bromberg, C., Bross, A., Browder, T. E., Bryman, D. A., Buckley, M., Burnstein, R., Caden, E., Campana, P., Carlini, R., Carosi, G., Castromonte, C., Cenci, R., Chakaberia, I., Chen, M. C., Cheng, C. H., Choudhary, B., Christ, N. H., Christensen, E., Christy, M. E., Chupp, T. E., Church, E., Cline, D. B., Coan, T. E., Coloma, P., Comfort, J., Coney, L., Cooper, J., Cooper, R. J., Cowan, R., Cowen, D. F., Cronin-Hennessy, D., Datta, A., Davies, G. S., Demarteau, M., Demille, D. P., Denig, A., Dermisek, R., Deshpande, A., Dewey, M. S., Dharmapalan, R., Dhooghe, J., Dietrich, M. R., Diwan, M., Djurcic, Z., Dobbs, S., Duraisamy, M., Dutta, B., Duyang, H., Dwyer, D. A., Eads, M., Echenard, B., Elliott, S. R., Escobar, C., Fajans, J., Farooq, S., Faroughy, C., Fast, J. E., Feinberg, B., Felde, J., Feldman, G., Fierlinger, P., Fileviez Perez, P., Filippone, B., Fisher, P., Flemming, B. T., Flood, K. T., Forty, R., Frank, M. J., Freyberger, A., Friedland, A., Gandhi, R., Ganezer, K. S., Garcia, A., Garcia, F. G., Gardner, S., Garrison, L., Gasparian, A., Geer, S., Gehman, V. M., Gershon, T., Gilchriese, M., Ginsberg, C., Gogoladze, I., Gonderinger, M., Goodman, M., Gould, H., Graham, M., Graham, P. W., Gran, R., Grange, J., Gratta, G., Green, J. P., Greenlee, H., Group, R. C., Guardincerri, E., Gudkov, V., Guenette, R., Haas, A., Hahn, A., Han, T., Handler, T., Hardy, J. C., Harnik, R., Harris, D. A., Harris, F. A., Harris, P. G., Hartnett, J., He, B., Heckel, B. R., Heeger, K. M., Henderson, S., Hertzog, D., Hill, R., Hinds, E. A., Hitlin, D. G., Holt, R. J., Holtkamp, N., Horton-Smith, G., Huber, P., Huelsnitz, W., Imber, J., Irastorza, I., Jaeckel, J., Jaegle, I., James, C., Jawahery, A., Jensen, D., Jessop, C. P., Jones, B., Jostlein, H., Junk, T., Kagan, A. L., Kalita, M., Kamyshkov, Y., Kaplan, D. M., Karagiorgi, G., Karle, A., Katori, T., Kayser, B., Kephart, R., Kettell, S., Kim, Y. K., Kirby, M., Kirch, K., Klein, J., Kneller, J., Kobach, A., Kohl, M., Kopp, J., Kordosky, M., Korsch, W., Kourbanis, I., Krisch, A. D., Krizan, P., Kronfeld, A. S., Kulkarni, S., Kumar, K. S., Kuno, Y., Kutter, T., Lachenmaier, T., Lamm, M., Lancaster, J., Lancaster, M., Lane, C., Lang, K., Langacker, P., Lazarevic, S., Le, T., Lee, K., Lesko, K. T., Li, Y., Lindgren, M., Lindner, A., Link, J., Lissauer, D., Littenberg, L. S., Littlejohn, B., Liu, C. Y., Loinaz, W., Lorenzon, W., Louis, W. C., Lozier, J., Ludovici, L., Lueking, L., Lunardini, C., Macfarlane, D. B., Machado, P. A. N., Mackenzie, P. B., Maloney, J., Marciano, W. J., Marsh, W., Marshak, M., Martin, J. W., Mauger, C., Mcfarland, K. S., Mcgrew, C., Mclaughlin, G., Mckeen, D., Mckeown, R., Meadows, B. T., Mehdiyev, R., Melconian, D., Merkel, H., Messier, M., Miller, J. P., Mills, G., Minamisono, U. K., Mishra, S. R., Mocioiu, I., Moed Sher, S., Mohapatra, R. N., Monreal, B., Moore, C. D., Morfin, J. G., Mousseau, J., Leonidas Moustakas, Mueller, G., Mueller, P., Muether, M., Mumm, H. P., Munger, C., Murayama, H., Nath, P., Naviliat-Cuncin, O., Nelson, J. K., Neuffer, D., Nico, J. S., Norman, A., Nygren, D., Obayashi, Y., O Connor, T. P., Okada, Y., Olsen, J., Orozco, L., Orrell, J. L., Osta, J., Pahlka, B., Paley, J., Papadimitriou, V., Papucci, M., Parke, S., Parker, R. H., Parsa, Z., Partyka, K., Patch, A., Pati, J. C., Patterson, R. B., Pavlovic, Z., Paz, G., Perdue, G. N., Perevalov, D., Perez, G., Petti, R., Pettus, W., Piepke, A., Pivovaroff, M., Plunkett, R., Polly, C. C., Pospelov, M., Povey, R., Prakesh, A., Purohit, M. V., Raby, S., Raaf, J. L., Rajendran, R., Rajendran, S., Rameika, G., Ramsey, R., Rashed, A., Ratcliff, B. N., Rebel, B., Redondo, J., Reimer, P., Reitzner, D., Ringer, F., Ringwald, A., Riordan, S., Roberts, B. L., Roberts, D. A., Robertson, R., Robicheaux, F., Rominsky, M., Roser, R., Rosner, J. L., Rott, C., Rubin, P., Saito, N., Sanchez, M., Sarkar, S., Schellman, H., Schmidt, B., Schmitt, M., Schmitz, D. W., Schneps, J., Schopper, A., Schuster, P., Schwartz, A. J., Schwarz, M., Seeman, J., Semertzidis, Y. K., Seth, K. K., Shafi, Q., Shanahan, P., Sharma, R., Sharpe, S. R., Shiozawa, M., Shiltsev, V., Sigurdson, K., Sikivie, P., Singh, J., Sivers, D., Skwarnicki, T., Smith, N., Sobczyk, J., Sobel, H., Soderberg, M., Song, Y. H., Soni, A., Souder, P., Sousa, A., Spitz, J., Stancari, M., Stavenga, G. C., Steffen, J. H., Stepanyan, S., Stoeckinger, D., Stone, S., Strait, J., Strassler, M., Sulai, I. A., Sundrum, R., Svoboda, R., Szczerbinska, B., Szelc, A., Takeuchi, T., Tanedo, P., Taneja, S., Tang, J., Tanner, D. B., Tayloe, R., Taylor, I., Thomas, J., Thorn, C., Tian, X., Tice, B. G., Tobar, M., Tolich, N., Toro, N., Towner, I. S., Tsai, Y., Tschirhart, R., Tunnell, C. D., Tzanov, M., Upadhye, A., Urheim, J., Vahsen, S., Vainshtein, A., Valencia, E., Water, R. G., Water, R. S., Velasco, M., Vogel, J., Vogel, P., Vogelsang, W., Wah, Y. W., Walker, D., Weiner, N., Weltman, A., Wendell, R., Wester, W., Wetstein, M., White, C., Whitehead, L., Whitmore, J., Widmann, E., Wiedemann, G., Wilkerson, J., Wilkinson, G., Wilson, P., Wilson, R. J., Winter, W., Wise, M. B., Wodin, J., Wojcicki, S., Wojtsekhowski, B., Wongjirad, T., Worcester, E., Wurtele, J., Xin, T., Xu, J., Yamanaka, T., Yamazaki, Y., Yavin, I., Yeck, J., Yeh, M., Yokoyama, M., Yoo, J., Young, A., Zimmerman, E., Zioutas, K., Zisman, M., Zupan, J., Zwaska, R., Center for Neutrino Physics, and Physics
- Subjects
scattering [neutrino] ,semileptonic decay [nucleus] ,experimental methods ,flavor: violation [lepton] ,Nuclear Theory ,decay [K0] ,FOS: Physical sciences ,annihilation [electron positron] ,violation [CP] ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology (hep-ph) ,magnetic moment [muon] ,heavy quark ,violation [lepton number] ,Nuclear Experiment ,interaction [hadron hadron] ,antihydrogen ,astrophysics ,new physics ,hep-ex ,High Energy Physics::Phenomenology ,oscillation [neutrino] ,scattering [lepton] ,hep-ph ,decay [B] ,electric moment [atom] ,oscillation [n anti-n] ,postulated particle ,High Energy Physics - Phenomenology ,grand unified theory ,electric moment [n] ,decay [p] ,Rockville 2011/12 [conference] ,High Energy Physics::Experiment ,violation [parity] - Abstract
The Proceedings of the 2011 workshop on Fundamental Physics at the Intensity Frontier. Science opportunities at the intensity frontier are identified and described in the areas of heavy quarks, charged leptons, neutrinos, proton decay, new light weakly-coupled particles, and nucleons, nuclei, and atoms., Comment: 229 pages
- Published
- 2011
- Full Text
- View/download PDF
7. From New to Large Field Inflation: Comparison with WMAP3
- Author
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Shafi, Q. and Senoguz, V. N.
- Subjects
General Relativity and Quantum Cosmology ,High Energy Physics::Phenomenology ,Astrophysics (astro-ph) ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics - Abstract
We briefly summarize and update a class of inflationary models from the early eighties based on a quartic (Coleman-Weinberg) potential for a gauge singlet scalar (inflaton) field. For vacuum energy scales comparable to the grand unification scale, the scalar spectral index n_s=0.94-0.97, in very good agreement with the WMAP three year results. The tensor to scalar ratio r~10^16 GeV, the inflationary scenario switches from `new' to `large-field' (V\propto\phi^2) inflation. An SO(10) version naturally explains the observed baryon asymmetry via non-thermal leptogenesis., Comment: 7 pages, 4 figures, 1 table. Based on a talk given by Q. Shafi at the 2nd International Conference on The Dark Side of the Universe (DSU 2006), Madrid (Spain), 20-24 June 2006
- Published
- 2007
8. U(1)_B-L: Neutrino Physics and Inflation
- Author
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Senoguz, V. N. and Shafi, Q.
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,High Energy Physics::Experiment ,Astrophysics::Cosmology and Extragalactic Astrophysics - Abstract
A gauged U(1)_B-L symmetry predicts three right handed handed neutrinos and its spontaneous breaking automatically yields the seesaw mechanism. In a supersymmetric setting this breaking can be nicely linked with inflation to yield deltaT/ T proportional to (M_B-L / M_P)^2, where M_B-L (M_P) denote the B-L breaking (Planck) scale. Thus M_B-L is estimated to be of order 10^16 GeV, and the heaviest right handed neutrino mass is less than or of order 10^14 GeV. A second right handed neutrino turns out to have a mass of order 10-10^2 T_r, where T_r (=0.97. The tensor to scalar ratio r is negligible, and dn_s/dlnk, Comment: Based on talks given by Q. Shafi at Planck 03, 11th International Workshop on Neutrino Telescopes, and PASCOS 2005. 9 pages, 8 figures
- Published
- 2005
9. Minimal Supersymmetric $SU(4) \times SU(2)_L \times SU(2)_R$
- Author
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King, S. F. and Shafi, Q.
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,High Energy Physics::Phenomenology ,FOS: Physical sciences - Abstract
We present a minimal string-inspired supersymmetric $SU(4) \times SU(2)_L \times SU(2)_R$ model, and provide a detailed analysis of the symmetry breaking potential in this model, based on a generalisation of that recently proposed by Dvali, Lazarides and Shafi. The model contains a global U(1) R-symmetry and reduces to the MSSM at low energies. However it improves on the MSSM since it explains the magnitude of its $\mu$ term and gives a prediction for $\tan \beta \simeq m_t/m_b$. It also predicts an essentially stable proton, and contains both `cold' and `hot' dark matter candidates. A period of hybrid inflation above the symmetry breaking scale is also possible in this model. Finally it suggests the existence of `heavy' charge $\pm e/6$ (colored) and $\pm e/2$ (color singlet) states., Comment: 13 pages, Latex
- Published
- 1997
10. Supersymmetric Inflation, Baryogenesis and \nu_{\mu} - \nu_{\tau} Oscillations
- Author
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Lazarides, George, Shafi, Q., and Vlachos, N.D.
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics::Phenomenology ,High Energy Physics::Experiment ,Astrophysics ,Particle Physics - Phenomenology - Abstract
In a supersymmetric left-right symmetric model, inflation, baryogenesis (via leptogenesis) and neutrino oscillations can become closely linked. A familiar ansatz for the neutrino Dirac masses and mixing of the two heaviest families, together with the MSW resolution of the solar neutrino puzzle, imply that 1 eV, Comment: 10 pages RevTeX 3 eps figures. email: vlachos@physics.auth.gr
- Published
- 1997
11. Supersymmetric Inflation, Baryogenesis and ��_�� - ��_�� Oscillations
- Author
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Lazarides, G., Shafi, Q., and Vlachos, N. D.
- Subjects
High Energy Physics - Phenomenology (hep-ph) ,Physics::Instrumentation and Detectors ,High Energy Physics::Phenomenology ,Astrophysics (astro-ph) ,FOS: Physical sciences ,High Energy Physics::Experiment - Abstract
In a supersymmetric left-right symmetric model, inflation, baryogenesis (via leptogenesis) and neutrino oscillations can become closely linked. A familiar ansatz for the neutrino Dirac masses and mixing of the two heaviest families, together with the MSW resolution of the solar neutrino puzzle, imply that 1 eV, 10 pages RevTeX 3 eps figures. email: vlachos@physics.auth.gr
- Published
- 1997
- Full Text
- View/download PDF
12. Gauge Hierarchy in ${\bf SU(3)_c \times SU(3)_L \times SU(3)_R}$ and Low Energy Implication
- Author
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Dvali, G. and Shafi, Q.
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics::Theory ,High Energy Physics - Phenomenology (hep-ph) ,High Energy Physics::Phenomenology ,FOS: Physical sciences - Abstract
We explore the gauge hierarchy problem within the framework of supersymmetric $SU(3)_c \times SU(3)_L \times SU(3)_R$ with a minimal set of higgs supermultiplets. Imposition of a suitable discrete (alternatively $R$) symmetry `prevents' the electroweak higgs doublets from becoming superheavy through renormalizable couplings. A full resolution of the problem requires consideration of the non-renormalizable couplings which play an essential role. Other key differences from the minimal supersymmetric $SU(5)$ model include the fact that the proton is stable and that an effective $5 + \bar{5}$ supermultiplet appears around the $TeV$ mass scale., Comment: LaTEX file, 16 pages, (Bartol Preprint BA-93-47)
- Published
- 1994
- Full Text
- View/download PDF
13. Zeroing In On the Top Quark, LSP and Scalar Higgs Masses
- Author
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Ananthanarayan, B. and Shafi, Q.
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,High Energy Physics::Lattice ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,High Energy Physics::Experiment ,Nuclear Experiment - Abstract
We estimate the top quark, lightest sparticle (LSP) and scalar higgs masses within a supersymmetric grand unified framework in which $\tan\beta \simeq m_t/m_b$ and the electroweak symmetry is radiatively broken. The requirement that the calculated $b$ quark mass lie close to its measured value, together with the cosmological constraint $\Omega_{LSP} \approx 1$, fixes the top quark mass to be $m_t(m_t) \approx 170 \pm 15\ GeV$. The LSP (of bino purity $\stackrel{_>}{_\sim} 98\%)$ has mass $\sim 200 - 350\ GeV$. In the scalar higgs sector the CP-odd scalar mass $m_A \stackrel{_}{_\sim} M_Z$, as suggested by the decay $b \rightarrow s\gamma$, we find $M_Z \stackrel{_, Comment: 14 pages in plain LaTeX, BA-93-25, PRL-TH-93/6
- Published
- 1993
14. From Fermion Mass Matrices to Neutrino Oscillations
- Author
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Babu, K. S. and Shafi, Q.
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,High Energy Physics::Experiment - Abstract
We present an ansatz for the quark and lepton mass matrices, derivable from SO(10) type GUTs, which accommodates a heavy $(> 92 GeV)$ top quark and permits large mixings in the $\nu_\mu \leftrightarrow \nu_\tau$ sector (as suggested by the recent Kamiokande and IMB data on the atmospheric neutrinos). The well known asymptotic relations $m_b = m_\tau$, $m_s = \frac{1}{3} m_\mu$ and $m_dm_s = m_e m_\mu$ all hold to a good approximation. Depending on $\nu_\mu \leftrightarrow \nu_\tau$ mixing which can even be maximal, the mixing angle relevant for solar neutrino oscillation lies in the range $7.8 \times 10^{-3} \stackrel{_, Comment: 16 pages, in LaTeX
- Published
- 1992
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