Curriculum vitae Dr. Inderpal Singh Current Address: Department of Physics Sri Guru Granth Sahib World University Fatehgarh Sahib Phone: +918872963151 email: inderpal@mppmu.mpg.de, inderpal.hadrons@gmail.com Home Address: 427, Jamiat Singh Road, Street No. 9 Moga-142001 Punjab, INDIA Phone: +918872963151 CITIZENSHIP: INDIAN Date of Birth: 06 February, 1982 Gender: Male EDUCATION: Ph.D. Thesis Submitted (Experimental High Energy Physics) Panjab University, Chandigarh, 2006-2011. Thesis Topic: MEASUREMENT OF THE NEUTRAL CURRENT ELECTRON-PROTON CROSS- SECTION AT HIGH BJORKEN-x WITH ZEUS DETECTOR AT HERA. Expected date for Viva, 1st June 2012. Master of Science (2004-2006), 79% Marks Panjab University, Chandigarh, June, 2006. Concentration : Physics. Bachelor of Education (2003-2004), 71% Marks Panjab University, Chandigarh, May, 2004. Concentration: Teaching of Science. Bachelor of Science (2000-2003), 84% Marks Panjab University, Chandigarh, May, 2003. Concentration: Physics, Chemistry, Mathematics. National Awards: Qualified National Eligibility Test (NET-UGC), 2005. Positions Held: Junior Research Fellow (JRF), University Grants Commission (UGC), India (2006-2008). Senior Research Fellow (SRF), University Grants Commission (UGC), India (2008 - August, 2011). Frequently visited Max Planck Institute for Physics, Munich and DESY, Hamburg (Germany) during Ph.D. (Jan, 2007 - May, 2011). Member of ZEUS Collaboration since 2007. Member of Indian Physics Association. Teaching Experience Post graduate government college for girls, sector 11, Chandigarh, Nov. 2011 - Feb. 2012.
Sri Guru Granth Sahib World University, Fatehgarh Sahib, July 2012 - till date. Work/Papers/Posters Presented at Conferences: Poster presented in Chandigarh Science Congress, 14 March-2008 at Panjab University, Chandigarh (India), Physics with the ZEUS detector at HERA. Paper presented in XVIII DAE HEP symposium, Dec-2008 at BHU, Varanasi (India), Energy corrections for inner ring of the calorimeter of the ZEUS detector at HERA [Volume 18 (2008)]. Work presented in Young Scientist Workshop, July-2009 at Ringberg, Germany, Systematic studies towards measurement of high-x structure functions of proton with ZEUS detector at HERA. Work presented in XIX DAE HEP symposium, Dec-2010 at LNMIIT, Jaipur (India), Measurement of neutral current cross sections at high-x with the ZEUS detector at HERA. Paper presented in XIX th International Workshop on Deep Inelastic Scattering and related subjects, 10-15 April 2011, Newport News (Jefferson Lab), Measurement of neutral current cross sections at high Bjorken x with the ZEUS detector at HERA, to be published in American Institute of Physics journal. Poster presented in XXV th International Symposium on Lepton Photon interactions at high energies, 22-27 August 2011, Tata Institute of Fundamental Research (TIFR), Mumbai, Measurement of neutral current cross section at high Bjorken x with the ZEUS detector at HERA. School/Workshop/Conference/Symposium attended: 30 Oct.- 18 Nov. 2006, SERC school on theoretical particle physics, IISC (Bangalore), India. 16-20 April 2007, XV th International Conference on Deep Inelastic Scattering and Related Subjects (DIS 2007), Munich, Germany. 14-15 March 2008, Chandigarh Science Congress, Panjab University, Chandigarh, India. 14-18 December 2008, XVIII th DAE-BRNS High Energy Physics Symposium, Banaras Hindu University, Varanasi, India. 25-29 July 2009, Young Scientist Workshop, Ringberg, Germany. 19-23 April 2010, XVIII th International Conference on Deep Inelastic Scattering and Related Subjects (DIS 2010), Florence, Italy. 13-18 December 2010, XIX th DAE-BRNS High Energy Physics Symposium, LN- MIIT, Jaipur, India. 10-15 April 2011, XIX th International Conference on Deep Inelastic Scattering and Related Subjects (DIS 2010), Newport News, VA, USA. 22-27 August 2011, XXV th International Symposium on Lepton Photon interactions at high energies, 22-27 August 2011, Tata Institute of Fundamental Research (TIFR), Mumbai, India. School/Workshop/Conference/Symposium organized: Executing member of National Conference on Preservation of Environment: Challenges before humanity, 14 March, 2013.
Computer Skills Programming Languages: C++, FORTRAN, Shell script, HTML, Latex. Analysis Tools: Toolkit) ROOT, ORANGE (ZEUS analysis software), BAT (Bayesian Analysis Research Experience During my Ph.D., I had a chance to have a nice experience of working in the ZEUS collaboration. I have worked on the measurement of the cross section of e p scattering at high Bjorken-x. The data sample used for the final results consisted of the whole e p data collected by ZEUS during HERA-II operation, which corresponds to an integrated luminosity of 187 pb 1. During my Ph.D. I occasionally visited to the Max Planck Institute for Physics, Munich, Germany and Deutsches Electron Synchrotron (DESY), Hamburg, Germany. Deep inelastic scattering (DIS), is by far the most accurate process for extracting the parton distribution functions (PDFs) and hence enhancing the knowledge about proton structure. These PDFs cannot be calculated from the first principles and need to be extracted from the experimental measurements. A precise knowledge of the PDFs is particularly important when the LHC has started to deliver proton-proton collisions. Since the protons are composite particles, consisting of gluons and quarks, the p p cross sections of hard scattering processes depend on the parton distributions in the proton. The LHC can make some measurements of these quantities, but will rely to a large extent on the precision data collected at other colliders, in particular data from HERA. The PDFs are found to decrease very quickly for x > 0.3. The high-x region covered by fixed target experiments correspond to low Q 2. The highest measured points in the DIS regime are for x = 0.75 by BCDMS, one of the fixed target experiments. The data collected at HERA cover much large phase space than the previous fixed target experiments. The Q 2 region covered increases substantially to 30,000 GeV 2 and x reaches to lowest point x = 6.3 10 5. A first attempt to explore the region of x 1 was performed by the ZEUS collaboration on the 96-00 data, collected with the ZEUS detector before the luminosity upgrade of the HERA accelerator. During my Ph.D. I measured the e p cross sections up to x = 1 with ZEUS e p data collected during 2004-06, which is more than ten times in luminosity than the ZEUS published high-x e p data. Also the reconstruction method is improved compared to the published results. Thus it is expected that the results from this study will put more constraints on the existing PDFs in the high-x region. The events having the jet very close to the beam pipe in the direction of proton, actually correspond to very high Bjorken-x values and for such events Bjorken-x cannot be reconstructed using the information from the detector. Such events were put in one bin, x edge < x < 1, where x edge is the maximum value of Bjorken-x that can be reconstructed in the detector. Since the form of PDF is not well known in this region, a cross section integrated over the bin is calculated. For the events in which the jets were well within the detector the Bjorken-x was reconstructed using information from the scattered electron and the jet and double differential cross sections were evaluated for such events. In DIS at HERA, scattered electron plays an important role in the event reconstruction, so the calibration of the energy of the scattered electron was done to have precise measurements of the cross sections. The energy of the electron was corrected for different detector effects like non-uniformities in the calorimeter, dead material traversed by the electron from interaction point to the calorimeter, shower sampling in the calorimeter and leakage at the ends of the calorimeter. Jets were calibrated using one jet events based upon p T -balance between scattered electron and the jet. The interaction vertex position is used to reconstruct the position and angles of the final state particles originating from the primary interaction. In ZEUS X and Y vertex spreads were very small, however the longitudinal vertex distribution (Zvtx) had non negligible width. The shape of the Zvtx depends upon the time period during which the data had been collected, as beam conditions may change with time. For better description of the data Zvtx, MC Zvtx distribution must be derived from the
used data sample. This method was opted and the efficiency corrected data Zvtx was fitted using a sum of 9 Gaussian functions. The resulting fit function was used to re-weight MC Zvtx. The systematic uncertainties from different sources were estimated and included in the cross section measurement. This measurement is expected to constitute an important constraint not only on PDFs at large-x but in the whole phase space, because of the inherent couplings between the small and the large-x PDFs. Papers Published/Accepted 1. Proceedings of XXV th International Symposium on Lepton Photon interactions at high energies, 22-27 August 2011, Tata Institute of Fundamental Research, Mumbai, Measurement of neutral current cross-sections at high Bjorken-x with the ZEUS detector at HERA. 2. Inderpal Singh, paper presented in XIX th International Workshop on Deep Inelastic Scattering and related subjects, 10-15 April 2011, Newport News (Jefferson Lab), Measurement of neutral current cross sections at high Bjorken x with the ZEUS detector at HERA, to be published in American Institute of Physics. 3. ZEUS Collaboration; H. Abramowicz et al., Production of the excited charm mesons D 1 and D 2 at HERA, accepted by Nuclear Phys. B. 4. ZEUS Collaboration; H. Abramowicz et al., Combined inclusive diffractive cross sections measured with forward proton spectrometers in deep inelastic ep scattering at HERA, to be published in EPJ C. 5. ZEUS Collaboration; H. Abramowicz et al., Measurement of isolated photons accompanied by jets in deep inelastic ep scattering, published online in Phys. Lett B. 6. ZEUS Collaboration; H. Abramowicz et al., Search for First-Generation Leptoquarks at HERA, to be published in Phys. Rev. D. 7. ZEUS Collaboration; H. Abramowicz et al., Inclusive-jet Photoproduction at HERA and determination of α s, Nucl. Phys., B864:1 37, (2012). 8. ZEUS Collaboration; H. Abramowicz et al., Exclusive Electroproduction of two Pions at HERA, Eur. Phys. Journal, C72:1869, (2012). 9. ZEUS Collaboration; H. Abramowicz et al., Scaled Momentum Distributions for K 0 sk s and Λ/ Λ in DIS at HERA, JHEP, 03:020, (2011). 10. ZEUS Collaboration; H. Abramowicz et al., Search for Single-Top Production in ep Collisions at HERA, Phys. Lett., B708:27 36, (2011). 11. ZEUS Collaboration; H. Abramowicz et al., Measurement of the t dependence in exclusive photoproduction of Upsilon (1S) mesons at HERA, Phys. Lett., B708:14 20, (2011). 12. ZEUS Collaboration; H. Abramowicz et al., Measurement of heavy-quark jet photoproduction at HERA, Eur. Phys. Journal, C71:1659, (2011). 13. ZEUS Collaboration; H. Abramowicz et al., Measurement of beauty production in deep inelastic scattering at HERA using decays into electrons, Eur. Phys. Journal, C71:1573, (2011). 14. ZEUS Collaboration; H. Abramowicz et al., Study of tau-pair production at HERA, Jour. of High Energy Phys., 02(2011):117, (2011).
15. ZEUS Collaboration; H. Abramowicz et al., Measurement of the Energy Dependence of the Total Photon-Proton Cross Section at HERA, Phys. Lett., B697:184 193, (2011). 16. ZEUS Collaboration; H. Abramowicz et al., Inclusive dijet Cross Sections in Neutral Current Deep Inelastic Scattering at HERA, Eur. Phys. Journal, C70:965 982, (2010). 17. ZEUS Collaboration; H. Abramowicz et al., Measurement of high-q2 charged current deep inelastic scattering cross sections with a longitudinally polarized positron beam at HERA, Eur. Phys. Journal, C70:945 963, (2010). 18. ZEUS Collaboration; H. Abramowicz et al., Measurement of D + and Λ + c production in deep inelastic scattering at HERA, Jour. of High Energy Phys., 11(2010):1 27, (2010). 19. ZEUS Collaboration; H. Abramowicz et al., Measurement of beauty production in DIS and F2 b b extraction at ZEUS, Eur. Phys. Journal, C69:347 360, (2010). 20. ZEUS Collaboration; H. Abramowicz et al., Inclusive-jet cross sections in NC DIS at HERA and a comparison of the k T, anti-k T and SIScone jet algorithms, Phys. Lett., B691:127 137, (2010). 21. ZEUS Collaboration; H. Abramowicz et al., Scaled Momentum Spectra in deep inelastic Scattering at HERA, Jour. of High Energy Phys., 6(2010):1 42, (2010). 22. ZEUS Collaboration; S. Chekanov et al., A QCD Analysis of ZEUS Diffractive Data, Nucl. Phys., B831:1 25, (2010). 23. H1 and ZEUS Collaborations; F.D. Aaron et al., Combined Measurement and QCD Analysis of the Inclusive e ± Scattering Cross Section at HERA, Jour. of High Energy Phys., 1(2010):1 63, (2010). 24. ZEUS Collaboration; S. Chekanov et al., Measurement of isolated photon production in deep inelastic ep scattering, Phys. Lett., B687:16-25, (2010) 25. H1 and ZEUS Collaborations; F.D. Aaron et al., Events with an Isolated Lepton and Missing Transverse Momentum Measurement of W Production at HERA, Jour. of High Energy Phys., 3(2010):1 19, (2010). 26. ZEUS Collaboration; S. Chekanov et al., Measurement of dijet photoproduction for events with a leading neutron at HERA, Nucl. Phys., B827:1 33, (2010). 27. ZEUS Collaboration; S. Chekanov et al., Measurement of J/ψ photoproduction at large momentum transfer at HERA, JHEP, 05(2010)1-36, (2010). 28. H1 and ZEUS Collaborations; F.D. Aaron et al., Multi-Leptons with High Transverse Momentum at HERA, JHEP, 10(2009)013, (2009). 29. ZEUS Collaboration; S. Chekanov et al., Measurement of J/ψ helicity distributions in inelastic photoproduction at HERA, JHEP, 12(2009)007, (2009). 30. ZEUS Collaboration; S. Chekanov et al., Multi-lepton production at high transverse momentum at HERA, Phys. Lett., B680:13 23, (2009). 31. ZEUS Collaboration; S. Chekanov et al., Scaled momentum distributions of charged particles in dijet photoproduction at HERA, JHEP, 08(2009)077, (2009). 32. ZEUS Collaboration; S. Chekanov et al., Measurement of charm and beauty production in deep inelastic ep scattering from decays into muons at HERA, Eur. Phys. Journal, C65:65 79, (2010).
33. ZEUS Collaboration; S. Chekanov et al., Measurement of the Longitudinal Proton Structure Function at HERA, Phys. Lett., B682:8 22, (2009). 34. ZEUS Collaboration; S. Chekanov et al., Measurement of Beauty Photoproduction using Decays into Muons in Dijet Events at HERA, JHEP, 04(2009)133, (2009). 35. ZEUS Collaboration; S. Chekanov et al., Measurement of the charm fragmentation function in D photoproduction at HERA, 04(2009)082, (2009) 36. ZEUS Collaboration; S. Chekanov et al., Measurement of High-Q 2 Neutral Current Deep Inelastic e p Scattering Cross Sections with a Longitudinally Polarised Electron Beam at HERA, Eur. Phys. Journal, C62:625 658, (2009). 37. ZEUS Collaboration; S. Chekanov et al., Measurement of D ± and D 0 Production in Deep Inelastic Scattering Using a Lifetime Tag at HERA, Eur. Phys. Journal, C63:171 188, (2009). 38. ZEUS Collaboration; S. Chekanov et al., Subjet Distributions in Deep Inelastic Scattering at HERA, Eur. Phys. Journal, C63:527 548, (2009). 39. ZEUS Collaboration; S. Chekanov et al., Measurement of Charged Current Deep Inelastic Scattering Cross Sections with a Longitudinally Polarised Electron Beam at HERA, Eur. Phys. Journal, C61:223 235, (2009) 40. ZEUS Collaboration; S. Chekanov et al., Leading Proton Production in Deep Inelastic Scattering at HERA, JHEP, 06(2009)074, (2009). 41. ZEUS Collaboration; S. Chekanov et al., Deep Inelastic Scattering with Leading Protons or Large Rapidity Gaps at HERA, Nucl. Phys., B816:1-61, (2009) 42. ZEUS Collaboration; S. Chekanov et al., A Measurement of the Q 2, W and t Dependences of Deeply Virtual Compton Scattering at HERA, JHEP, 05(2009)108, (2009). 43. ZEUS Collaboration; S. Chekanov et al., Measurement of beauty production from dimuon events at HERA, JHEP, 02(2009)032, (2009). References Prof. Manjit Kaur, Department of Physics, Panjab University, Chandigarh, India (manjit@pu.ac.in) Prof. Allen Caldwell, Director of Max Planck Institute for Physics, Munich, Germany (caldwell@mppmu.mpg.de) Prof. Aharon Levy, ZEUS Spokesperson, Tel Aviv University, Israel (levy@alzt.tau.ac.il) Prof. Halina Abramowicz, Tel Aviv University/MPI Munich (halina@post.tau.ac.il)