Mass Splittings of Heavy Quark Spin Symmetry Partners of X(3872) in QCD Sum Rules

Download

tez (49).pdf

Date

2021-9

Author

Çetin, Hande

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

433
views

76
downloads

The parameters of QCDSR such as the values of the condensates and the Borel mass are not well-established and hence increase the uncertainty of predictions up to 30%. In this study, mass splittings of the heavy quark spin symmetry partners of the exotic particle X(3872) are studied from the tetraquark aspect. In order to accomplish the task, randomised sets of the parameters are generated to find the squared mass values of the partners, and the results are compared with the findings in the literature. Randomisation of the values is performed using Wolfram Mathematica 12.0.0 and the data is analysed in Python 3.7.3.

Subject Keywords

X(3872), tetraquark, QCD, Sum Rule

URI

https://hdl.handle.net/11511/93101

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Heavy chi(Q) (2) tensor mesons in QCD Alıyev, Tahmasıb; Savcı, Mustafa (Elsevier BV, 2010-06-14) The masses and decay constants of the ground state heavy chi(Q2) (Q = b, c) tensor mesons are calculated in the framework of the QCD sum rules approach. The obtained results on the masses are in good consistency with the experimental values. Our predictions on the decay constants can be verified in the future experiments.
Unitary structure of the QCD sum rules and KYN and KY Xi couplings Aliev, T; Özpineci, Altuğ; Yakovlev, SB; Zamiralov, VS (2005-06-20) New relations between QCD Borel sum rules for strong coupling constants of K-mesons to baryons are derived. It is shown that starting from the sum rule for the coupling constants g(pi Sigma Sigma) and g(pi Sigma Lambda) it is straightforward to obtain corresponding sum rules for the g(KYN), G(KY Xi) couplings, Y = Sigma,Lambda.
Radiative decays of negative parity heavy baryons in the framework of the light cone QCD sum rules Agamaliev, A.K.; Alıyev, Tahmasıb; Savcı, Mustafa (Elsevier BV, 2017-2) The transition form factors responsible for the radiative Sigma(Q) -> Lambda(Q)gamma and Xi(')(Q) -> Xi(Q)gamma So decays of the negative parity baryons are examined within light cone QCD sum rules. The decay widths of the radiative transitions are calculated using the obtained results of the form factors. A comparison of our predictions on decay widths with the corresponding widths of positive parity baryons is given.
Strong coupling constants of the octet baryons to Kand pi mesons in light cone QCD sum rules Alıyev, Tahmasıb; Özpineci, Altuğ (2007-06-20) In this work, the strong coupling constants of the octet baryons to the K and pi mesons are studied within the Light Cone QCD sum rule method. It is well known that in the SU(3)(f) limit, these couplings can be expressed in terms of only 2 constants, so called F and D constants. In this work, the SU(3)(f) symmetry violating effects are also studied and it is shown that all the coupling constants can be expressed in terms of four analytical functions of the quark parameters.
Tensor form factors of nucleon in QCD ERKOL, GÜRAY; Özpineci, Altuğ (2011-10-25) We extract the isovector tensor nucleon form factors, which play an important role in understanding the transverse spin structure of the nucleon when related to the quark helicity-flip generalized parton distributions via their first moments. We employ the light-cone QCD sum rules to leading order in QCD and include distribution amplitudes up to twist 6 in order to calculate the three tensor form factors H(T). E(T) and (H) over bar (T). Our results agree well with those from other approaches in the low and ...

Citation Formats

H. Çetin, “Mass Splittings of Heavy Quark Spin Symmetry Partners of X(3872) in QCD Sum Rules,” M.S. - Master of Science, Middle East Technical University, 2021.