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Strange multi-baryonic clusters are an exiting possibility to explore the properties of cold dense baryonic matter. Recent results on searches for exotic narrow resonances with $\Lambda$ hyperon subsystems are reviewed. The observation of…

High Energy Physics - Experiment · Physics 2009-02-04 Aslanyan P. Zh

The framework under which decays $\Lambda_{b}(\frac{1}{2}^{+})\rightarrow B(\frac{1}{2}^{+})+M$ are analyzed is not applicable for the decays $\Lambda_{b}(\frac{1}{2}^{+})\rightarrow B^{\ast}(\frac{3}{2} ^{+})+M$. These decays occur through…

High Energy Physics - Phenomenology · Physics 2017-04-24 Fayyazuddin

The measured masses and strong decays of $\Lambda_b(6146)^0$ and $\Lambda_b(6152)^0$ required us to decode them as the 1$D$ excited states with $J^P=3/2^+$ and $J^P=5/2^+$, respectively. Under the suggested assignment, the masses and total…

High Energy Physics - Phenomenology · Physics 2019-11-28 Bing Chen , Si-Qiang Luo , Xiang Liu , Takayuki Matsuki

Strong decay probabilities are calculated using the Lorentz contracted wave functions of decay products, determined in the arbitrary dynamical scheme with the instantaneous interaction. It is shown that the decay width obtains an additional…

High Energy Physics - Phenomenology · Physics 2021-04-28 Yu. A. Simonov

The LHCb Collaboration announced the observation of doubly charmed baryon through $\Xi_{c c}^{++} \rightarrow \Lambda_{c}^{+} K^{-} \pi^{+} \pi^{+}$ in 2017. Since then, a series of studies of doubly heavy baryons have been presented.…

High Energy Physics - Phenomenology · Physics 2021-02-01 De-Min Li , Xi-Ruo Zhang , Ye Xing , Ji Xu

Many $P-$wave mixing heavy-light $1^+$ states have not been discovered by experiment, some of them have been discovered but without the information of width, or with large uncertainty widths. In this paper, we study the strong decays of…

High Energy Physics - Phenomenology · Physics 2018-12-05 Yi Zhang , Zhi-Hui Wang , Tian-hong Wang , Yue Jiang , Qiang Li , Guo-Li Wang

Using data collected by the CLEO detector in the Upsilon(4S) region, we report new measurements of the exclusive decays of B mesons into final states of the type Lambda_c^+ p-bar n(pi), where n=0,1,2,3. We find signals in modes with one,…

High Energy Physics - Experiment · Physics 2010-04-08 S. A Dytman , CLEO Collaboration

We extend our relativistic quark model to the study of the decay Lambda_b -> Lambda_c ell nu and verify that the model satisfies the heavy-quark symmetry constraints at order 1/mQ^2. We isolate a strong dependence on a parameter which…

High Energy Physics - Phenomenology · Physics 2010-11-01 B. Holdom , M. Sutherland , J. Mureika

We study the color-allowed $\Lambda_b\rightarrow \Lambda_c \pi, \Lambda_cK$ decays in the perturbative QCD approach (PQCD) to lowest order in strong coupling constant $\alpha_s$. Both the factorizable and nonfactorizable contributions are…

High Energy Physics - Phenomenology · Physics 2022-04-26 Chao-Qi Zhang , Jia-Ming Li , Meng-Kun Jia , Zhou Rui

We study the non-leptonic two-body weak decays of $\Lambda_b^0 \to p M$ with $ M=(\pi^-,K^-)$ and $(\rho^-,K^{*-})$ in the light-front quark model under the generalized factorization ansatz. By considering the Fermi statistic between quarks…

High Energy Physics - Phenomenology · Physics 2021-02-12 C. Q. Geng , Chia-Wei Liu , Tien-Hsueh Tsai

We examine the radiative decays of the Lambda (1405) to octet baryons, Lambda + gamma and Sigma + gamma. In the limit of SU(3) symmetry the decay rates for these two modes are related, and we compute the leading correction to the relation…

Nuclear Theory · Physics 2007-05-23 Michael W. Moore , Martin J. Savage

We discuss the mass spectrum and strong decays of baryon resonances belonging to the N, Delta, Sigma, Lambda, Xi and Omega families in a collective string-like model for the nucleon. We find good overall agreement with the available data.…

Nuclear Theory · Physics 2017-11-03 R. Bijker , A. Leviatan

In the standard model, the top quark decay width \Gamma_t is computed from the exclusive t -> bW decay. We argue in favor of using the three body decays t-> bf_i\bar{f}_j to compute \Gamma_t as a sum over these exclusive modes. As dictated…

High Energy Physics - Phenomenology · Physics 2010-01-11 G. Calderon , G. Lopez Castro

We study the structure of the baryon resonances $\Lambda(1405)$ and $\bar\Lambda(1405)$ in $J/\psi$ four body decays $J/\psi\to \Sigma\bar \Sigma \pi\pi$ in the framework of a coupled channel chiral unitary approach. With still sufficient…

Nuclear Theory · Physics 2009-11-10 Chiangbing Li , E. Oset

We study the $P$-wave single charmed baryons of the $SU(3)$ flavor $\bf\bar3_F$ within the framework of heavy quark effective theory. We systematically calculate their strong and radiative decay properties using the light-cone sum rule…

High Energy Physics - Phenomenology · Physics 2025-05-14 Xuan Luo , Yi-Jie Wang , Hua-Xing Chen

Exclusive semileptonic Lambda_b decays to excited charmed Lambda_c baryons are investigated at order Lambda_{QCD}/m_Q in the heavy quark effective theory. The differential decay rates are analyzed for the J^\pi=1/2^- Lambda_c(2593) and the…

High Energy Physics - Phenomenology · Physics 2016-08-25 Adam K. Leibovich , Iain W. Stewart

Using a sample of 152 million BBbar pairs accumulated with the Belle detector at the KEKB e+e- collider, we perform a Dalitz plot analysis of the three-body charmed decay B- -> Lambda_c+ p_bar pi-. The intermediate two-body decay B- ->…

High Energy Physics - Experiment · Physics 2008-11-26 The Belle Collaboration , N. Gabyshev

Semileptonic decays of Lambda_b and Lambda_c baryons are studied within the Relativistic Three-Quark Model using finite heavy quark mass values. Employing the same parameters as have been used previously for the description of exclusive…

High Energy Physics - Phenomenology · Physics 2011-01-25 M. A. Ivanov , J. G. Korner , V. E. Lyubovitskij , A. G. Rusetsky

The radiative decays of the p-wave charmed heavy baryons to the ground state baryon states are studied in the framework of the light cone QCD sum rules method. Firstly, the transition form factors that describe these transitions are…

High Energy Physics - Phenomenology · Physics 2019-06-26 T. M. Aliev , T. Barakat , M. Savci

The baryon decay modes of B,bar{B}-> N_{1}bar{N}_{2}(f), bar{N}_{1}N_{2}(bar{f}) provide a frame work to test CP-invariance in baryon sector. It is shown that in the rest frame of B, N_{1} and bar{N}_{2} come out with longitudnal…

High Energy Physics - Phenomenology · Physics 2008-11-26 Fayyazuddin
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