- Physical Review Journals
All JournalsPhysics Magazine
Access Provided by Xinjiang University

Physical Review D

Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Searching for the layered structure of space at the LHC

Luis A. Anchordoqui1, De Chang Dai2, Haim Goldberg3, Greg Landsberg4, Gabe Shaughnessy5,6, Dejan Stojkovic2, and Thomas J. Weiler7

  • 1Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA
  • 2HEPCOS, Department of Physics, SUNY at Buffalo, Buffalo, New York 14260-1500, USA
  • 3Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA
  • 4Department of Physics, Brown University, Providence, Rhode Island 02912, USA
  • 5High-Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 6Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA
  • 7Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA

PDF

Phys. Rev. D 83, 114046 – Published 23 June, 2011

DOI: https://doi.org/10.1103/PhysRevD.83.114046

Abstract

Alignment of the main energy fluxes along a straight line in a target plane has been observed in families of cosmic ray particles detected in the Pamir mountains. The fraction of events with alignment is statistically significant for families with superhigh energies and large numbers of hadrons. This can be interpreted as evidence for coplanar hard scattering of secondary hadrons produced in the early stages of the atmospheric cascade development. This phenomenon can be described within the recently proposed “crystal world,” with latticized and anisotropic spatial dimensions. Planar events are expected to dominate particle collisions at a hard-scattering energy exceeding the scale Λ3 at which space transitions from 3D⇌2D. We study specific collider signatures that will test this hypothesis. We show that the energy spectrum of Drell-Yan (DY) scattering is significantly modified in this framework. At the LHC, two jet and three jet events are necessarily planar, but four jet events can test the hypothesis. Accordingly, we study in a model-independent way the 5σ discovery reach of the ATLAS and CMS experiments for identifying four jets coplanarities. For the extreme scenario in which all pp→4 jet scattering processes become coplanar above Λ3, we show that with an integrated luminosity of 10(100)  fb−1 the LHC experiments have the potential to discover correlations between jets if Λ3≲1.25(1.6)  TeV.

View figure in article

Article Text

References (22)

  1. L. T. Baradzei et al. (Pamir Collaboration), Bull. Russ. Acad. Sci. Phys. 50N11, 46 (1986) [Izv. Ross. Akad. Nauk, Ser. Fiz. 50, 2125 (1986)]; Bull. Russ. Acad. Sci. Phys. 55N4, 24 (1991) [Izv. Ross. Akad. Nauk, Ser. Fiz. 55, 650 (1991)]; Bull. Russ. Acad. Sci. Phys. 57, 612 (1993) [Izv. Ross. Akad. Nauk, Ser. Fiz. 57N4, 40 (1993)].
  2. I. P. Ivanenko, V. V. Kopenkin, A. K. Managadze, and I. V. Rakobolskaya, JETP Lett. 56, 188 (1992); V. V. Kopenkin, A. K. Managadze, I. V. Rakobolskaya, and T. M. Roganova, Phys. Rev. D 52, 2766 (1995).
  3. R. A. Mukhamedshin, J. High Energy Phys. 05 (2005) 049.
  4. T. Antoni et al. (KASCADE Collaboration), Phys. Rev. D 71, 072002 (2005).
  5. L. Xue et al., in Proceedings of the 26th International Cosmic Ray Conference, Salt Lake City, Utah, 1999, edited by D. Kieda, M. Salamon, and B. Dingus (IUPAP, London, 1999), Vol. 1, p. 127.
  6. J. N. Capdevielle, J. Phys. G 14, 503 (1988); A. K. Managadze et al., Part. Nucl. Lett. 112, 19 (2002); V. I. Galkin et al., Bull. Russ. Acad. Sci. Phys. 66, 1697 (2002) [Izv. Ross. Akad. Nauk, Ser. Fiz. 66, 1544 (2002)]; A. K. Managadze and V. I. Osedlo, Bull. Russ. Acad. Sci. Phys. 73, 615 (2009) [Izv. Ross. Akad. Nauk, Ser. Fiz. 73, 653 (2009)].
  7. A. De Roeck, I. P. Lokhtin, A. K. Managadze, L. I. Sarycheva, and A. M. Snigirev, in Proceedings of the 13th International Conference on Elastic and Diffractive Scattering, edited by M. Deile, D. d’Enterria, and A. De Roeck (2010), p. 308, CERN-Proceedings-2010-002; R. Mukhamedshin, Eur. Phys. J. C 60, 345 (2009). See also Ref. [2].
  8. M. L. Mangano, M. Moretti, F. Piccinini, R. Pittau, and A. D. Polosa, J. High Energy Phys. 07 (2003) 001.
  9. See, for example, V. D. Barger and R. J. N. Phillips, Collider Physics, Frontiers in Physics Vol. 71 (Addison-Wesley, Reading, MA, 1987).
  10. L. Anchordoqui, D. C. Dai, M. Fairbairn, G. Landsberg, and D. Stojkovic, arXiv:1003.5914; for an editorial perspective see Z. Merali, Nature (London) 466, 426 (2010)
  11. S. D. Drell and T. M. Yan, Phys. Rev. Lett. 25, 316 (1970); 25, 902 (1970).
  12. F. Halzen and D. A. Morris, Phys. Rev. D 42, 1435 (1990).
  13. V. Khachatryan et al. (CMS Collaboration), J. High Energy Phys. 09 (2010) 091.
  14. J. Adams et al. (STAR Collaboration), Nucl. Phys. A757, 102 (2005).
  15. T. Valla et al., Nature (London) 417, 627 (2002).
  16. X. Calmet and G. Landsberg, arXiv:1008.3390.
  17. R. Jackiw and S. Templeton, Phys. Rev. D 23, 2291 (1981); R. D. Pisarski, 29, 2423 (1984); T. W. Appelquist, M. J. Bowick, D. Karabali, and L. C. R. Wijewardhana, 33, 3704 (1986).
  18. D. V. Shirkov, Phys. Part. Nucl. Lett. 7, 379 (2010).
  19. J. S. Schwinger, Phys. Rev. 82, 664 (1951).
  20. V. M. Abazov et al. (D0 Collaboration), Phys. Lett. B 695, 88 (2011).
  21. G. J. Feldman and R. D. Cousins, Phys. Rev. D 57, 3873 (1998).
  22. T. Aaltonen et al. (CDF Collaboration), Phys. Rev. Lett. 102, 091805 (2009).

Outline

Information

Phys. Rev. D 83, 114046– Published 23 June, 2011
  • Received 8 January 2011
Article part of CHORUS

© 2011 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation