First determination of the spin and parity of the charmed-strange baryon 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi mathvariant="normal">Ξ</mml:mi><mml:mi>c</mml:mi></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>2970</mml:mn><mml:msup><mml:mo stretchy="false">)</mml:mo><mml:mo>+</mml:mo></mml:msup></mml:math>

Moon, T.; Tanida, K.; Kato, Y.; Sk, Kim; Adachi, I.; Ahn, J. K.; Aihara, H.; Said, S. Al; Asner, D. M.; Aulchenko,; Aushev, T.; Ayad, R.; Babu,; Bahinipati, S.; Behera, P. K.; Beleño, C.; Bennett, J. V.; Bessner, M.; Bhuyan, B.; Bilka, T.; Biswal, Jyoti Prakash; Bonvicini, G.; Bożek, A.; Bračko, M.; Browder, T. E.; Campajola, M.; Cao, L.; Červenkov, D.; Chang, M. C.; Chang, P.; Chen, A; Cheon, B.G.; Chilikin, K.; Cho, K; Choi, S. K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; Dash, N.; Nardo, G. De; Capua, F. Di; Doležal, Z.; Dong, T. V.; Dossett, D.; Dubey, S.; Eidelman, S.; Epifanov, D.; Ferber, T.; Fulsom, B. G.; Garg, R.; Gaur,; Gabyshev, N.; Garmash, A.; Giri, A.; Goldenzweig, P.; Golob, B.; Hadjivasiliou, C.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Hedges, M. T.; Hou, W.-S.; Hsu, C.-L.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, M.; Jacobs, W. W.; Jia, S.; Jin, Y.; Joo, K. K.; Kang, K. H.; Karyan, G.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Bh, Kim; Kim, DY; Kt, Kim; Kim, Yoon Jun; Yk, Kim; Kimmel, T. D.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; Križan, P.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kumar, Rajeev; Kumara, K.; Kuzmin, A.; Kwon, Y.-J.; Is, Lee; Jy, Lee; Sc, Lee; Lk, Li; Yb, Li; Gioi, L. Li; Libby, J.; Liptak, Z.; Liventsev, D.; Luo, T.; MacQueen, C.; Masuda, M.; Matsuda, T.; Matvienko, D.; Merola, M.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Mohanty, S.; Mori, Takashi; Mussa, R.; Nakano, Takashi; Nakao, M.; Natkaniec, Z.; Natochii, A.; Nayak, M.; Niiyama, M.; Nisar, N. K.; Nishida, S.; Ogawa, K.; Ogawa, S.; Ono, H.; Pakhlov, P.; Pakhlova, G.; Pardi, S.; Park, H; Park, Sang Hoon; Patra, S.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Podobnik, T.; Popov, M. G.; Prencipe, E.; Prim, M. T.; Ritter, M.; Rout, N.; Russo, G.; Sahoo, Deepak Kumar; Sakai, Y.; Sandilya, S.; Sangal, A.; Šantelj, L.; Savinov,; Schnell, G.; Schueler, J.; Schwanda, C.; Seidl, R.; Seino, Y.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shiu, J. G.; Shwartz, B.; Solovieva, E.; Sumihama, M.; Sumisawa, K.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tamponi, U.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Vahsen, S. E.; Tonder, R. Van; Varner, G.; Vinokurova, A.; Vorobyev,; Vossen, A.; Wang, CH; Wang, E; Mz, Wang; Wang, P; Wehle, S.; Wiechczynski, J.; Xu, X. P.; Yabsley, B. D.; Yang, S. B.; Ye, H; Yelton, J.; Yin, J. H.; Yuan, C. Z.; Zhang, ZP; Zhilich,; Zhukova,; Zhulanov, V.

doi:10.1103/physrevd.103.l111101

Cited by 26 publications

(12 citation statements)

References 29 publications

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“…In spite of recent experimental and theoretical efforts, the first radial excitations of the Ξ and Ω baryons, which are analogous to the Roper resonance, are yet to be identified. On the other hand, the putative Roper-like resonances with heavy-quark flavor are recently reported in the experiments at current experimental facilities [31,32]. Interestingly, they have similar excitation energies of around 500 MeV from their respective ground states [33].…”

Section: Introductionmentioning

confidence: 93%

“…Before closing this subsection, we mention some similarities between Ξ and Ξ 𝑐 baryon spectra. In the spectrum of Ξ 𝑐 baryons, there are two nearby states: Ξ 𝑐 (2970) which is claimed to be the Roper-like state [31] and Ξ 𝑐 (2965) which is recently observed by the LHCb Collaboration [67]. These states were discovered in different channels, namely, the Ξ 𝑐 (2970) was found in the Ξ 𝑐 𝜋𝜋 invariant mass while the Ξ 𝑐 (2965) was in the Λ 𝑐 K invariant mass.…”

Section: Statementioning

confidence: 99%

“…Thus, finding its missing siblings and understanding the similarities and differences in multistrangeness hyperons would shed light on our understanding Since the Roper resonance is expected to be the first radial excitation of the ground state in the quark model, its quantum numbers should be 𝐽 𝑃 = 1/2 + . The recent observation of the Ξ 𝑐 (2970) [31] and the Λ 𝑏 (6072) [32] indicates that these baryons may be the analog states of the Roper resonance. Data Group (PDG) [1] with excitation energy of around 500 MeV, but none of them are yet identified as the radially excited state with 𝐽 𝑃 = 1/2 + .…”

Section: Introductionmentioning

confidence: 99%

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Strong decays of multi-strangeness baryon resonances in the quark model

Arifi¹,

Suenaga²,

Oh³

2022

Preprint

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Decay properties of multi-strangeness Ξ and Ω baryon resonances are investigated within the constituent quark model by including relativistic corrections. The strong decay widths of various Ξ and Ω resonances are computed and tested for internal quark configurations to pin down their spin-parity (𝐽 𝑃 ) quantum numbers and internal structures. We found that the Roper-like resonances in the multi-strangeness sector have large decay widths bearing resemblances to their siblings in light and heavy baryon sectors. In addition, we obtained the decay ratio for the Ω(2012) as Γ(Ω → Ξ K𝜋)/Γ(Ω → Ξ K) = 4.5%, which is consistent with the experimental data when 𝐽 𝑃 = 3/2 − is assigned. This observation holds the possibility that the Ω(2012) could naturally be explained as a three-quark state in the quark model. The decays of other low-lying Ξ and Ω resonances are systematically analyzed, which would be useful to unveil the structure of these resonances in future experiments.

show abstract

Section: Introductionmentioning

confidence: 93%

Section: Statementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strong decays of multi-strangeness baryon resonances in the quark model

Arifi¹,

Suenaga²,

Oh³

2022

Preprint

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“…The first determination of spin-parity of a charmed-strange baryon, Ξ (2970) + , is presented in Ref. [13]. The unclear theoretical situation motivates this experimental determination, which provides important information to test predictions and help decipher its nature.…”

Section: Determination Of (ξ (2970) + )mentioning

confidence: 99%

Recent charm results at Belle

Li¹

2021

Proceedings of 10th International Workshop on Charm Physics — PoS(CHARM2020)

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“…In addition, it is known that the large decay widths of Λ c (2765) and Ξ c (2970) whose values are tens of MeV are not easily explained by the conventional nonrelativistic quark model [8,9] giving the widths of only a few MeV [10]. 2 In this paper, we study decay properties of the heavy baryons, especially focusing on the large decay widths of the Roper-like baryons, by means of a chiral model together with the heavy quark spin symmetry [13][14][15][16][17][18]. The chiral model describes the heavy baryons based on chiral symmetry, which is one of the fundamental symmetries in QCD, exhibited by the diquark inside the baryons.…”

Section: Introductionmentioning

confidence: 99%

Decays of Roper-like singly heavy baryons in a chiral model

Suenaga,

Hosaka

2022

Preprint

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We present a chiral model describing decays of the Roper-like Λc(2765) and Ξc(2970) as well as those of the heavy quark spin-doublet {Σc(2455), Σc(2520)} and {Ξ c , Ξc(2645)}, by focusing on chiral representations of diquarks inside the heavy baryons. Based on our chiral model together with the heavy quark spin symmetry, we derive a relation satisfied by axial charges of the heavy baryons that controls magnitude of their one pion (kaon) decays. Besides, it is shown that the large decay widths of the Roper-like Λc(2765) and Ξc(2970), which cannot be implemented by conventional nonrelativistic quark models, are explained by reasonable values of the axial charges. In addition, we apply the chiral model to bottom baryons and predict decay widths of the undiscovered Roper-like Ξ b . We expect that our present investigation leads to elucidation of dynamical properties of the excited heavy baryons from the viewpoint of chiral symmetry.

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First determination of the spin and parity of the charmed-strange baryon Ξc(2970)+

Cited by 26 publications

References 29 publications

Strong decays of multi-strangeness baryon resonances in the quark model

Strong decays of multi-strangeness baryon resonances in the quark model

Recent charm results at Belle

Decays of Roper-like singly heavy baryons in a chiral model

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