Nucleon spin structure studies in Drell-Yan process at Compass
| Thesis title in Czech: | Studium spinové struktury nukleonu s pomocí procesu Drell-Yan v experimentu Compass |
|---|---|
| Thesis title in English: | Nucleon spin structure studies in Drell-Yan process at Compass |
| Key words: | struktura nukleonu, partonové distribuce, Drell–Yan, J/psi, SIDIS, COMPASS |
| English key words: | nucleon structure, parton distributions, Drell–Yan, J/psi, SIDIS, COMPASS |
| Academic year of topic announcement: | 2013/2014 |
| Type of assignment: | dissertation |
| Thesis language: | angličtina |
| Department: | Department of Low Temperature Physics (32-KFNT) |
| Supervisor: | prof. Ing. Miroslav Finger, DrSc. |
| Author: | hidden - assigned and confirmed by the Study Dept. |
| Date of registration: | 27.09.2013 |
| Date of assignment: | 27.09.2013 |
| Confirmed by Study dept. on: | 27.01.2014 |
| Date and time of defence: | 29.03.2018 10:00 |
| Date of electronic submission: | 07.02.2018 |
| Date of submission of printed version: | 07.02.2018 |
| Date of proceeded defence: | 29.03.2018 |
| Reviewers: | Elke-Caroline Aschenauer |
| Mgr. Petr Závada, CSc. | |
| Advisors: | Michael Finger, M.Sc., CSc. |
| prof. RNDr. Jiří Englich, DrSc. | |
| Guidelines |
| Guidelines of the work:
1)Getting acquainted with the goals of Compass experiment at CERN. 2)Geting acquainted with ongoing theoretical and experimental efforts related to the Drell-Yan process. 3)Analysis of the feasibility of Drell-Yan process at Compass facility for nucleon spin structure studies. 4)Participation in the modification of existing Compass polarised target for Drell-Yan experiemnts using low temperature transversely polarized proton target (NH3) and pion beam. 5)Preparation of mion-pair detection in pion-proton collisions at high energies at Compass. 5)Preparation of measurements of Drell-Yan process at Compass in 2013-2016 years. 6)Analysis of obtained results. |
| References |
| 1)P. Abbon et al., The Compass Experiment at CERN , NIMA 577 (2007) 455-518
2)Compass Collaboration: The Comoass II Proposal, CERN-SPSC-2010-014, SPSC-P-340 3)K. Kondo et al., Polarization measurement in the COMPASS polarized target NIMA 526 (2004) 70-75 4)N. Doshita et al., Past and future of the Compass polarized target, ASI SPIN-Praha-2008 5)S.D. Drell, T.-M. Yan (1970). "Massive Lepton-Pair Production in Hadron-Hadron Collisions at High Energies". Physical Review Letters 25 (5): 316–320 |
| Preliminary scope of work |
| Since a long time the Drell-Yan (DY) process is considered to be a powerful tool to study hadron structure. So far several experiments were successfully carried out using unpolarised beams and targets. Nowadays, taking into account the much advanced understanding of the spin structure of the nucleon and the recent development in the experimental technique, a new generation of DY measurements using polarised beams and/or targets are under the preparation. One of the first DY experiment of this kind is being prepared at Compass at CERN. The main aim of the first measurement here is to study of the transverse-momentum-dependent parton distributions (TMDs) using the Drell-Yan process on a low temperature transversely polarised proton target (NH3) hit by a pion beam. One of the key experimetntal task is the modification of the unique Compass low temperature polarised target for Drell-Yan experiemnts to cope with high heat input from the pion beam as the prerequisite of the preparation of the new target holder, high frequency polarising cavity and NMR system for measuring of target polarisation in Drell-Yan studies. Among the distributions to be studied at Compass DY experiments are Sivers, Boer-Mulders and pretzelosity TMDs as well as transversely polarised quark distributions. This measurement will make it possible to test a most important prediction of QCD. |
| Preliminary scope of work in English |
| Since a long time the Drell-Yan (DY) process is considered to be a powerful tool to study hadron structure. So far several experiments were successfully carried out using unpolarised beams and targets. Nowadays, taking into account the much advanced understanding of the spin structure of the nucleon and the recent development in the experimental technique, a new generation of DY measurements using polarised beams and/or targets are under the preparation. One of the first DY experiment of this kind is being prepared at Compass at CERN. The main aim of the first measurement here is to study of the transverse-momentum-dependent parton distributions (TMDs) using the Drell-Yan process on a low temperature transversely polarised proton target (NH3) hit by a pion beam. One of the key experimetntal task is the modification of the unique Compass low temperature polarised target for Drell-Yan experiemnts to cope with high heat input from the pion beam as the prerequisite of the preparation of the new target holder, high frequency polarising cavity and NMR system for measuring of target polarisation in Drell-Yan studies. Among the distributions to be studied at Compass DY experiments are Sivers, Boer-Mulders and pretzelosity TMDs as well as transversely polarised quark distributions. This measurement will make it possible to test a most important prediction of QCD. |