Zahari Kassabov | HiggsTools

Introduction:

I am a Spanish student originally from Bulgaria. I graduated in Physics from the University of Zaragoza in 2014. I also spent a year in Southampton as an Erasmus student and have been a CERN Summer Student.

My project in HiggsTools consists on improving the determination of parton distribution functions as a part of the NNPDF collaboration, and particularly their uncertainties, which have a great impact in the determination of properties of the Higgs boson.

For me, the chance of participating in the HiggsTools network represents an opportunity to produce important scientific contributions at an early stage, as well as developing the connections and knowledge necessary to accomplish a successful career in the future.

Scientific publications:

1802.05236	PDF dependence on parameter fits from hadronic data	Z. Kassabov	ESR13	DFTTO	WP3: Tools	M3.3.3 Improved PDFs using LHC data M3.3.4 Consistent PDF fits at NNLO
1802.03398	Precision determination of the strong coupling constant within a global PDF analysis	R.D.Ball, S. Carrazza, L. Del Debbio, S. Forte, Z. Kassabov, J. Rojo, E. Slade, M. Ubiali	ESR13	DFTTO	WP3: Tools	M3.3.3 Improved PDFs using LHC data M3.3.4 Consistent PDF fits at NNLO
1711.09875	The HiggsTools Handbook: Concepts and observables for deciphering the Nature of the Higgs Sector	M. Boggia, J. M. Cruz-Martinez, H. Frellesvig, N. Glover, R. Gomez-Ambrosio, G. Gonella, Y. Haddad, A. Ilnicka, S. Jones, Z. Kassabov, F. Krauss, T. Megy, D. Melini, D. Napoletano, G. Passarino, S. Patel, M. Rodriguez-Vazquez, T. Wolf	ESR1, ESR3, ESR4, ESR5, ESR6, ESR7, ESR8, ESR9, ESR11, ESR12, ESR13, ESR14, ESR16, ESR20, ESR21	ALU-FR, CNRS, DESY, DFTTO, ETH, FOM, NCSR-D, UDUR, UGR	WP2: Predictions and simulations of signal and background WP3: Tools WP1: Interpretation of Data	M1.1.1 Extraction of model-independent results for cross sections times branching ratios in different Higgs search channels M1.1.2 Extraction of model-independent results on the VV to VV cross section M1.1.3 Extending the mass range and coupling range in different Higgs boson search channels M1.2.1 Extraction of constraints on Higgs couplings from fits to all available data; discussion of model dependence M1.2.2 Extraction of information on Higgs spin and CP properties M1.3.1 Constraints on physics beyond the SM, distinction between different models M1.4.1 Review of the current state and future directions in Higgs boson physics M2.1.1 Specialised codes for the SM-like Higgs boson scenario M2.1.2 Better control of theoretical uncertainties for the SM-like Higgs boson scenario M2.2.1 Precision calculations for vector boson scattering M2.2.2 Precision calculations of non-standard Higgs boson scenarios M2.2.3 Standardised description for non-standard Higgs boson interactions M2.2.4 Interpretation of experimental data in the light of M2.2.3 M2.3.1 Validation of key Higgs background processes and evaluation of uncertainties derived from extrapolating them to signal regions M2.3.2 Better control of theoretical uncertainties M2.3.3 Specialised codes for low multiplicity background processes
1706.00428	Parton distributions from high-precision collider data	R.D. Ball, V. Bertone, S. Carrazza, L. Del Debbio, S. Forte, P. Groth-Merrild, A. Guffanti, N.P. Hartland, Z. Kassabov, J. I. Latorre, E.R. Nocera, J. Rojo, L. Rottoli, E. Slade, M. Ubiali	ESR13	DFTTO	WP3: Tools	M3.3.3 Improved PDFs using LHC data
1610.07922	Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector	The LHC Higgs Cross Section Working Group	ESR1, ESR13, ESR14, ESR8	ALU-FR, CNRS, DESY, DFTTO, ETH, UDUR, UGR	WP2: Predictions and simulations of signal and background WP3: Tools WP1: Interpretation of Data	M1.2.1 Extraction of constraints on Higgs couplings from fits to all available data; discussion of model dependence M1.2.2 Extraction of information on Higgs spin and CP properties M1.3.1 Constraints on physics beyond the SM, distinction between different models M1.4.1 Review of the current state and future directions in Higgs boson physics M2.1.1 Specialised codes for the SM-like Higgs boson scenario M2.1.2 Better control of theoretical uncertainties for the SM-like Higgs boson scenario M2.2.1 Precision calculations for vector boson scattering M2.2.3 Standardised description for non-standard Higgs boson interactions M2.2.4 Interpretation of experimental data in the light of M2.2.3 M2.3.1 Validation of key Higgs background processes and evaluation of uncertainties derived from extrapolating them to signal regions M2.3.2 Better control of theoretical uncertainties M2.3.3 Specialised codes for low multiplicity background processes M3.1.1 Tools for boosted objects & fat jets M3.1.2 Fast simulation and reconstruction tools for the LHC M3.3.3 Improved PDFs using LHC data
1602.00005	Specialized minimal PDFs for optimized LHC calculations	S. Carrazza, S. Forte, Z. Kassabov and J. Rojo	ESR13	DFTTO	WP3: Tools	M3.3.3 Improved PDFs using LHC data M3.3.4 Consistent PDF fits at NNLO
1510.03865	PDF4LHC recommendations for LHC Run II	J. Butterworth, S. Carrazza, A. Cooper-Sarkar, A. De Roeck, J. Feltesse, S, Forte, J. Gao, S. Glazov, J. Huston, Z. Kassabov, R. McNulty, A. Morsch, P. Nadolsky, V. Radescu, J. Rojo, R. Thorne	ESR13	DFTTO, UDUR	WP3: Tools	M3.3.2 Methods for PDF uncertainties in shower Monte Carlos M3.3.3 Improved PDFs using LHC data M3.3.4 Consistent PDF fits at NNLO
1505.06736	An Unbiased Hessian Representation for Monte Carlo PDFs	S. Carrazza, S. Forte, Z. Kassabov, J. I. Latorre, J. Rojo	ESR13	DFTTO	WP3: Tools	M3.3.4 Consistent PDF fits at NNLO

Higgstools Events:

	Location	Date
HiggsTools Final Network Meeting	IPPP	Monday, September 11, 2017 to Friday, September 15, 2017
Third Annual Meeting and Young Editors School 2017	Torino, Italy	Monday, May 15, 2017 to Saturday, May 20, 2017
HiggsTools Second Annual Meeting	Granada, Spain	Tuesday, April 12, 2016 to Friday, April 15, 2016
HiggsTools Mid Term Review	Helmholtz Association, Brussels	Tuesday, October 20, 2015
HiggsTools Second Young Researchers Meeting	Universite Libre de Bruxelles	Wednesday, October 21, 2015 to Friday, October 23, 2015
HiggsTools Annual School 2016	Zuoz, Switzerland	Sunday, August 14, 2016 to Saturday, August 20, 2016
HiggsTools Annual Summer School 2015	Pré Saint-Didier, Italy	Sunday, June 28, 2015 to Saturday, July 04, 2015
HiggsTools First Annual Meeting	Freiburg, Germany	Wednesday, April 15, 2015 to Friday, April 17, 2015
HiggsTools First Young Researchers Meeting	Lumley Castle, United Kingdom	Monday, February 16, 2015 to Friday, February 20, 2015

Secondments:

	Host Institution	Start	End
Private	Wolfram Research	Thursday, September 01, 2016	Monday, October 31, 2016

Other Events:

	Location	Date
Higgs Couplings 2016	SLAC	Wednesday, November 9, 2016 - 18:30 to Saturday, November 12, 2016 - 18:00
NNPDF Collaboration Meeting	Oxford	Tuesday, September 8, 2015 - 09:15 to 18:00
The 10th Workshop of the LHC Higgs Cross Section Working Group	CERN	Wednesday, July 15, 2015 - 09:00 to Friday, July 17, 2015 - 18:00
PDF4LHC meeting	CERN	Monday, April 13, 2015 - 09:00 to 18:00
GGI lectures on the theory of fundamental interactions	Firenze, Italy	Monday, January 12, 2015 - 08:00 to Thursday, January 29, 2015 - 18:00
Higgs Coupling 2014	Torino, Italy	Wednesday, October 1, 2014 - 09:00 to Friday, October 3, 2014 - 17:00