ENRICO FERMI INSTITUTE OF THE UNIVERSITY OF CHICAGO
THE ENRICO FERMI POSTDOCTORAL FELLOWSHIP
Sponsored by the Pritzker Foundation
Application Form
2000-2001 ENRICO FERMI POSTOCTORAL FELLOWSHIP
Candidate Information: Nominator Information:
Name : Maria Spiropulu Prof. John Huth
Institution: Harvard University Harvard University
Department: Physics Physics
Address: FERMILAB 42 Oxford Str.
P.O. BOX 500 Cambridge, MA 02138
MS318/Harvard E-mail:
Batavia, IL 60510 Telephone: (617) 495-8144 Fax: (610) 495-2678
Field of Research: Experimental High Energy Physics
Date expected to receive doctoral degree: June 2000
Information on the individuals whom you will receive letters of recommendation from(other than the nominator):
1. Name: Henry Frisch 2. Name: Al Goshaw
Title: Professor of Physics Title: Professor of Physics, CDF co-spokesperson
Address: High Energy Physics, Room 320 Address 1:Department of Physics, Box 90305,
Enrico Fermi Institute Duke University, Durham,
5640 S. Elllis Ave NC 27708-0305, USA
Chicago,IL 60637 Address 2 : FERMILAB,P.O.BOX 500, MS318
BATAVIA, IL 60510
Telephone: (773)702-7479 Telephone: (919) 660-2584 (630)
Fax: (773)702-1914 Fax: (919) 660-2525 (630) 840 6315
E-mail: E-mail:
3. Name: Colin Gay 4. Name: Chris Quigg
Title: Asst. Professor of Physics Title: Physicist (Staff Member)
Address: Yale University, 509 JWG, Box 208121 Address: Theoretical Physics Department
260 Whitney Ave. New Haven, CT, 06515 FERMILAB, P.O. BOX 500,MS106
Telephone: (203)432-3364 BATAVIA,IL 60510
Fax : (203)432-6125 Telephone: (630) 840-3578
Email: Fax: (630) 840-5435
5. Name : David Stuart
Title : Research Scientist
Address: FERMILAB,
PO BOX500, MS318 Batavia, IL 60510
Telephone: (630) 840-3072
Fax :(630) 840-6315
E-mail:
RESEARCH STATEMENT
OBJECTIVE: The object of my research is the discovery or exclusion of new physics beyond the Standard Model (SM), as probed by experiments in high energy physics (HEP) at the TeV energy scale. In addition, I will explore the synergies between by expertise in HEP experiment and the cutting edge of experimental particle-astrophysics.
INTRODUCTION: Spectacular discoveries in elementary particle physics during the past century lead to an accurate and precise (to the degree we have been able to experimentally test), Standard Model of the fundamental particles and their interactions (SM). Yet the model is incomplete. Although we are able to make a plethora of conjectures about the mechanism responsible for particle masses, experimentally we are at the dawn of discoveries that will prove any of them. The existence of massive W and Z electroweak gauge bosons (we have experimentally found and measured the mass of these particles) strongly implies the existence of a Higgs boson - yet to be discovered. The observation that the coupling constants of the fundamental forces in nature evolve with energy suggests unification at very high energy scale where gravity is becoming as strong as the gauge interactions. The smallness and quantum stability of the hierarchy M(electroweak)/M(Planck)~10-17 has been the driving force for the construction of frameworks beyond the SM. A new effective field theory such as supersymmetry may be revealed at the TeV scale stabilizing and perhaps explaining the origin of the hierarchy. The so called “desert” between those two seemingly fundamental scales can actually be populated by a wealth of new physics responsible for triggering symmetry breakings, the pattern of fermion masses and mixing and so on. The experimental investigation of electroweak scale energies is then very exciting because it will reveal the true mechanism of the electroweak symmetry breaking and mass generation as well as the true relationships between the fundamental scales of matter.
PROPOSAL: During my Ph.D. thesis work at Tevatron’s CDF, I acquired experience in physics with proton antiproton collisions pertaining to missing energy and hadronic jets and investigation of supersymmetric signals. A second running period of the Tevatron (RunII) will start in 2001. The new accelerator complex has been built to increase the yield of anti-protons resulting in a 20 x higher luminosity at a 10% higher energy. The CDF detector is upgraded to handle the high event rate, to have a more complete coverage of the interaction region and to improve the momentum and position resolutions of the particles produced. Profiting from the experience in RUN I and and the improved data analysis techniques I developed in my Ph.D. thesis I will make a comprehensive study of CDF’s sensitivity to supersymmetric quark and gluon production with missing energy and jets for RunII. I have already worked on the proposal for the RunII missing energy trigger design and will continue with a more detailed study and implementation of this trigger. In the past year the missing energy signal has been underlined as a probe for large new extra (spatial) dimensions. In this provocative and exciting framework the Planck scale is not a fundamental scale. The SM particles cannot freely propagate in the extra dimensions but must be localized to our 4-dimensional world which appears to have thickens of 1/M(electroweak) from the extra dimensional view. The only fields that propagate in the 4+extra dimensional “bulk” are the 4+extra dimensional graviton. In proton antiproton collisions the graviton can be emitted to the bulk and show in the detector as missing energy. I have already initiated the study of extra dimensions at CDF and I will complete the analysis with existing data in the missing energy channel as well as study the sensitivity for RunII in the same channel. The large extra dimensions framework inaugurates an era of innovation in thinking and it may well prove to bring string theory closer to experimental prediction than ever before. I believe it has to be seriously addressed with accelerator, laboratory and any other sort of experiment that we can think of. I intend to work closely with other members of the University of Chicago CDF group.
ADDITIONAL REMARKS & Expression of Interest: I would like to underline the implications of my research now and in the future in the relatively new interdisciplinary filed of particle-astrophysics. Many fundamental questions can now be addressed both by high energy physics and particle-astrophysics. For example the lightest supersymmetric particle, called the neutrino, is a strong candidate for cold dark matter. The nature and abundance of dark matter has an important impact on cosmological models, which in turn can be confronted with the data from the Cosmic Microwave Background (CMB) experiments. At the University of Chicago there is a strong CMB program. I am very interested in interacting with the researchers in these programs, and potentially collaborating and applying my skills acquired in high energy physics to this research
OUTLOOK: Experimental high energy physics is in the brink of extraordinary discoveries. The Higgs particle and supersymmetry may be almost in our reach. I am thrilled to be a part of the incredible effort for discovery in the collider program and I am excited at the potential collaboration with the particle-astrophysicists. I think the fellowship program at the Enrico Fermi Institute of the University of Chicago will give me the opportunity to maximize my physics yield, expand my knowledge and expand my horizons.
SELECTED PUBLICATIONS
List publications (titles, publishers, dates). Continue on a blank sheet if necessary.
I expect one Phys. Rev. D and at least one Phys. Rev. Let. publications with the results from my Ph.D. thesis research by the summer of 2000.
Physics at RUN II: the Supersymmetry/Higgs Workshop, Fermilab report ( to be published 1999) (I was the CDF co-convener for the mSUGRA subgroup)
[1]Search for ScaLar Top and Scalar Bottom Quark in p-pbar at S**(1/2) = 1.8-TEV. CDF collaboration (F.Abe et al) to be submitted to Phys. Rev. Let.
[2]Tests of Enhanced Leading Order QCD in W Boson plus Jets Events from 1.8 TeV pbar-p Collisions CDF collaboration(F. Abe et al) to be submitted to Phys.Rev. D.
SEARCH FOR CHARGINO - NEUTRALINO ASSOCIATED PRODUCTION AT THE FERMILAB TEVATRON COLLIDER. CDF collaboration (F. Abe et al.). FERMILAB-PUB-98-084-E, Mar 1998. 17pp., Phys.Rev.Lett.80:5275-5280,1998, e-Print Archive: hep-ex/9803015
SEARCHES FOR NEW PHYSICS IN DIPHOTON EVENTS IN P ANTI-P COLLISIONS AT S**(1/2) = 1.8-TEV. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-98-024-E, Jan 1998. 17pp. Phys.Rev.Lett.81:1791-1796,1998,e-Print Archive: hep-ex/9801019
MEASUREMENT OF THE TOP QUARK MASS AND T ANTI-T PRODUCTION CROSS-SECTION FROM DILEPTON EVENTS AT THE COLLIDER DETECTOR AT FERMILAB. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-97-304-E, Sep 1997. 9pp.Phys.Rev.Lett.80:2779-2784,1998, e-Print Archive: hep-ex/9802017
MEASUREMENT OF THE TOP QUARK MASS. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-97-284-E, Oct 1997. 6pp. Phys.Rev.Lett.80:2767-2772,1998,e-Print Archive: hep-ex/9801014
SEARCH FOR HIGGS BOSONS PRODUCED IN ASSOCIATION WITH A VECTOR BOSON IN P ANTI-P COLLISIONS AT S**(1/2) = 1.8-TEV. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-98-252-E, Aug 1998. 17pp.
Phys.Rev.Lett.81:5748-5753,1998
MEASUREMENT OF THE SIGMA(W + >= 1 JET) / SIGMA(W) CROSS-SECTION RATIO FROM ANTI-P P COLLISIONS AT S**(1/2) = 1.8-TEV. CDF Collaborations (F. Abe et al.). FERMILAB-PUB-98-133-E, Apr 1998. 9pp.
Phys.Rev.Lett.81:1367-1372,1998
SEARCHES FOR NEW PHYSICS IN DIPHOTON EVENTS IN P ANTI-P COLLISIONS AT S**(1/2) = 1.8-TEV. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-98-024-E, Jan 1998. 17pp. Phys.Rev.Lett.81:1791-1796,1998,e-Print Archive: hep-ex/9801019
PROPERTIES OF JETS IN W BOSON EVENTS FROM 1.8-TEV ANTI-P P COLLISIONS. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-97-301-E, Aug 1997. 36pp. Phys.Rev.Lett.79:4760-4765,1997 e-Print Archive: hep-ex/9709016
SEARCH FOR GLUINOS AND SQUARKS AT THE FERMILAB TEVATRON COLLIDER. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-97-031-E, Feb 1997. 13pp.
PROPERTIES OF JETS IN Z BOSON EVENTS FROM 1.8-TEV ANTI-P P COLLISIONS. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-96-056-E, Mar 1996. 13pp.,Phys.Rev.Lett.77:448-453,1996, e-Print Archive: hep-ex/9603003
SEARCH FOR CHARGINO - NEUTRALINO PRODUCTION IN P ANTI-P COLLISIONS AT S**(1/2) = 1.8-TEV. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-96-029-E, Jan 1996. 15pp.Phys.Rev.Lett.76:4307-4311,1996, e-Print Archive: hep-ex/9603001
SEARCH FOR GLUINO AND SQUARK CASCADE DECAYS AT THE FERMILAB TEVATRON COLLIDER. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-95-399-E, Dec 1995. 11pp. Phys.Rev.Lett.76:2006-2010,1996
[3]Supralinearity of the 110°C thermoluminescence glow-peak of synthetic quartz obtained with isothermal measurements Kitis, G.; Spiropulu, M.; Charalambous, S.; Weber, E.R. Nuclear Instruments And Methods In Physics Research Section B: Beam, Vol: 101, pp. 255-257 1995
[4]Characterization of buried SixNy films with EXAFS E. C. Paloura, P. Grekos, A. Mertens, W. Frentrup, M. Spiropulu, BESSY Jahresbericht p.378 1993.
[5]Heating rate effects on the TL glow peaks of tHree thermoluminescent phosphors, Kitis, G.; Spiropulu, M.; Papadopoulos,J; Charalambous,S Nuclear Instruments And Methods In Physics Research Section B: Beam, Vol: 73, pp 367-372, 1993
TECHNICAL PUBLICATIONS
TEST STAND FOR THE SILICON VERTEX DETECTOR OF THE COLLIDER DETECTOR FACILITY. S. Zimmermann (Rio Grande do Sul U.), J. Anderson, J. Andresen, E. Barsotti, J. Chramowicz, G. Duerling, M. Gao, H. Gonzalez, B. Haynes, W. Knopf, K. Treptow, D. Walsh, T. Zmuda (Fermilab), T. Huffman, P. Shepard (Pittsburgh U.), C. Gay, S. Harder, H. Hill, J. Huth, J. O' Kane, J. Oliver, H. Robins, M. Spiropulu, R. Strohmer (Harvard U.), M. Gold, T. Thomas (NewMexico U.). 1996. IEEE Trans.Nucl.Sci.43:1170-1174, 1996
The SVX II silicon vertex detector upgrade at CDF Antos, J.; Chao, H.-Y.; Chang, P.; Cheng, M.-T.; Chu, M.-L.; Guo, R.-S.; Ho, C.-L.; Teng, P.-K.; Wang, M.-J.; Wu, S.-C.; Yeh, G.-P.; Yeh, P.; Andressen, J.; Barsotti, E.; Bowden, M.; Cihangir, S.; et. al. , (Nuclear Instruments And Methods In Physics Research Section A:, Vol: 383, pp. 13-20 ,1996
THE CDF-II DETECTOR: TECHNICAL DESIGN REPORT. CDF-II Collaboration (R. Blair et al.). FERMILAB-PUB-96-390-E, Nov 1996. 234pp.
The Silicon Readout Controller : Technical Design Report .J.Huth,C.Gay,Maria Spiropulu J.Oliver,N.Felt Online publication for the CDF Collaboration and the FERMILAB Computing Division / Electronic Systems Engineering Department Document Number, HAR-SVX-960210,1998, http://www.hepl.harvard.edu/maria/
INTERNAL PUBLICATIONS
Checks of ISAJET V7.37 SupersymmEtRY processes Maria Spiropulu, James Done, Stephan Lammel CDFPUB 5153, 1999
On the determination of the QCD background to the MISSING ENERGY plus three jets search Maria Spiropulu, John Huth, CDFPUB 5152, 1999
Missing Energy Signature from Kaluza-Klein Graviton Emission With Run IB Data Kevin Burkett, Maria Spiropulu CDFPUB5151, 1999
Run1B Jet20, Jet50 and MET35* trigger efficiencies, Maria Spiropulu, John Huth, CDFPUB 5060,1999
On the determination of the V plus jets background to the MET plus jets search
Maria Spiropulu, John Huth CDFPUB4512, 1998
Second MISSING ENERGY Sample Selection for Run1B Squark/Gluino Search
Maria Spiropulu, John Huth CDFPUB4143, 1997
Abstracts submitted for APS'97 from the exotics group
David Stuart, Brendan Bevensee, James Done, Leslie Groer, Joao Guimaraes da Costa, Takanobu Handa, Kara Hoffman, Hisanori Kambara, Hyunsoo Kim, Sergei Lusin, Carmine Pagliarone, Arnold Pomppos, Maria Spiropulu, Timothy Thomas, Juan Valls, Rocio Vilar CDFPUB4045, 1997
FiRst MISSING ENERGY Sample Selection for Run 1B Squark/Gluino (and other) Search(es)
Maria Spiropulu, John Huth CDFPUB4027, 1997
The SVXII Test Stand Software Colin Gay, Maria Spiropulu, Harlan Robins CDFPUB3621, 1996
ANATOMY OF THE SVXII PIPELINE AND THE KEK BEAM TEST SIGNAL-TO-NOISE C. Gay, M. Spiropulu, J. Boudreau CDFPUB3514, 1996
PUBLICATIONS
PRODUCTION OF UPSILON(1S) MESONS FROM CHI(B) DECAYS IN P ANTI-P COLLISIONS AT S**(1/2) = 1.8-TEV. CDF Collaboration (T. Affolder et al.). FERMILAB-PUB-99-301-E, Oct 1999, 17pp. Submitted to Phys.Rev.Lett., e-Print Archive: hep-ex/9910025
MEASUREMENT OF B QUARK FRAGMENTATION FRACTIONS IN THE PRODUCTION OF STRANGE AND LIGHT B MESONS IN P ANTI-P COLLISIONS AT S**(1/2)=1.8-TEV. CDF Collaboration (F. Abe et al.), 1999. 14pp. Phys.Rev.D60:092005,1999
SEARCH FOR A W-PRIME BOSON VIA THE DECAY MODE W-PRIME ---> MUON NEUTRINO IN 1.8-TEV P - ANTI-P COLLISIONS. CDF Collaboration (F. Abe et al.). FERMILAB-PUB-99-249-E, Sep 1999. 19pp. e-Print Archive: hep-ex/9910004
MEASUREMENT OF THE HELICITY OF W BOSONS IN TOP QUARK DECAYS. CDF Collaboration (T. Affolder et al.). FERMILAB-PUB-99-257-E, Sep 1999. 8pp. Submitted to Phys.Rev.Lett. e-Print Archive: hep-ex/9909042
SEARCH FOR A FOURTH GENERATION QUARK MORE MASSIVE THAN THE Z0 BOSON IN P ANTI-P COLLISIONS AT S**(1/2) = 1.8-TEV. CDF Collaboration (T. Affolder et al.). FERMILAB-PUB-99-256-E, Sep 1999.
12pp. Submitted to Phys.Rev.Lett. e-Print Archive: hep-ex/9909027
MEASUREMENT OF B QUARK FRAGMENTATION FRACTIONS IN P ANTI-P COLLISIONS AT S**(1/2) = 1.8-TEV. CDF Collaboration (T. Affolder et al.). FERMILAB-PUB-99-243-E, Sep 1999. 16pp. Submitted to Phys.Rev.Lett. e-Print Archive: hep-ex/9909011
A MEASUREMENT OF SIN 2 BETA FROM B ---> J / PSI K0(S) WITH THE CDF DETECTOR. CDF Collaboration (T. Affolder et al.). FERMILAB-PUB-99-225-E, Sep 1999, 35pp. Submitted to Phys.Rev.D, e-Print Archive: hep-ex/9909003