Evidence for a bottom baryon resonance<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>Λ</mml:mi><mml:mi>b</mml:mi><mml:mrow><mml:mo>*</mml:mo><mml:mn>0</mml:mn></mml:mrow></mml:msubsup></mml:math>in CDF data

Aaltonen, T.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos̆, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro‐Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Costa, J. Guimarães da; Barria, P.; Bartoš, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Bland, K. R.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brigliadori, L.; Bromberg, C.; Brücken, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Bussey, P.; Butti, P.; Buzatu, A.; Calamba, A.; Camarda, S.; Campanelli, M.; Canelli, F.; Carls, B.; Carlsmith, D.; Carosi, R.; Carrillo, S.; Casal, B.; Casarsa, M.; Castro, A.; Catastini, P.; Cauz, D.; Cavaliere, V.; Cavalli‐Sforza, M.; Cerri, A.; Cerrito, L.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Cho, K.; Chokheli, D.; Clark, A.; Clarke, Christopher; Convery, M. E.; Conway, J.; Corbo, M.; Cordelli, M.; Cox, C. A.; Cox, D. J.; Cremonesi, M.; Cruz, D.; Cuevas, J.; Culbertson, R.; D’Ascenzo, N.; Datta, M.; Barbaro, P. de; Demortier, L.; Deninno, M.; D’Errico, M.; Devoto, F.; Canto, A. Di; Ruzza, B. Di; Dittmann, J.; Donati, S.; D’Onofrio, M.; Dorigo, M.; Driutti, A.; Ebina, K.; Edgar, R. C.; Elagin, A.; Erbacher, R.; Errede, S.; Esham, B.; Farrington, S. M.; Ramos, J. P. Fernández; Field, R. D.; Flanagan, G.; Forrest, R.; Franklin, M.; Freeman, J.; Frisch, H.; Funakoshi, Y.; Galloni, C.; Garfinkel, A. F.; Garosi, P.; Gerberich, H.; Gerchtein, E.; Giagu, S.; Giakoumopoulou, V.; Gibson, K.; Ginsburg, C. M.; Giokaris, N.; Giromini, P.; Giurgiu, G.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldin, D.; Golossanov, A.; Gómez, G.; Gómez-Ceballos, G.; Goncharov, M.; López, O. González; Gorelov, I.; Goshaw, A. 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D.; Limosani, A.; Lipeles, E.; Lister, A.; Liu, H.; Liu, Q.; Liu, T.; Lockwitz, S.; Loginov, A.; Lucchesi, D.; Lucà, A.; Lueck, J.; Lujan, P.; Lukens, P.; Lungu, G.; Lys, J.; Lysák, R.; Madrak, R.; Maestro, P.; Malik, S.; Manca, G.; Manousakis-Katsikakis, A.; Marchese, L.; Margaroli, F.; Marino, P.; Martı́nez, M.; Matera, K.; Mattson, M. E.; Mazzacane, A.; Mazzanti, P.; McNulty, R.; Mehta, A.; Mehtälä, P.; Mesropian, C.; Miao, T.; Mietlicki, D.; Mitra, A.; Miyake, H.; Moêd, S.; Moggi, N.; Moon, C. S.; Moore, R.; Morello, M. J.; Mukherjee, A.; Müller, Th.; Murat, P.; Mussini, M.; Nachtman, J.; Nagai, Y.; Naganoma, J.; Nakano, I.; Napier, A.; Nett, J.; Neu, C.; Nigmanov, T.; Nodulman, L.; Noh, S. Y.; Norniella, O.; Oakes, L.; Oh, S. H.; Oh, Y. D.; Oksuzian, I.; Okusawa, T.; Orava, R.; Ortolan, L.; Pagliarone, C.; Palencia, E.; Palni, P.; Papadimitriou, V.; Parker, W.; Pauletta, G.; Paulini, M.; Paus, C.; Phillips, T. J.; Piacentino, G.; Pianori, E.; Pilot, J.; Pitts, K.; Plager, C.; Pondrom, L.; Poprocki, S.; Potamianos, K.; Pranko, A.; Prokoshin, F.; Ptohos, F.; Punzi, G.; Ranjan, N.; Redondo, I.; Renton, P.; Rescigno, M.; Rimondi, F.; Ristori, L.; Robson, A.; Rodriguez, T.; Rolli, S.; Ronzani, M.; Roser, R.; Rosner, Jonathan L.; Ruffini, F.; Ruiz, A.; Russ, James; Rusu, V.; Sakumoto, W. K.; Sakurai, Y.; Santi, L.; Sato, K.; Saveliev, V.; Savoy-Navarro, A.; Schlabach, P.; Schmidt, E. E.; Schwarz, Thomas; Scodellaro, L.; Scuri, F.; Seidel, S. C.; Seiya, Y.; Semenov, A.; Sforza, F.; Shalhout, S.; Shears, T.; Shepard, P. F.; Shimojima, M.; Shochet, M.; Симоненко, А.; Sliwa, K.; Smith, J. R.; Snider, F. D.; Song, H.; Sorı́n, V.; Denis, R. St.; Stancari, M.; Stentz, D.; Strologas, J.; Sudo, Y.; Суханов, А.; Суслов, И.; Takemasa, K.; Takeuchi, Y.; Tang, J.; Tecchio, M.; Shreyber-Tecker, I.; Teng, P. K.; Thom, J.; Thomson, E.; Thukral, V.; Toback, D.; Tokár, S.; Tollefson, K.; Tomura, T.; Tonelli, D.; Torre, S.; Torretta, D.; Totaro, P.; Trovato, M.; Ukegawa, F.; Uozumi, S.; Vázquez, F.; Velev, G.; Vellidis, C.; Vernieri, C.; Vidal, M.; Vilar, R.; Vizán, J.; Vogel, M.; Volpi, G.; Wagner, P.; Wallny, R.; Wang, S. M.; Waters, D.; Wester, W. C.; Whiteson, D.; Wicklund, A. B.; Wilbur, S.; Williams, H. H.; Wilson, J. S.; Wilson, P.; Winer, B. L.; Wittich, P.; Wolbers, S.; Wolfe, H.; Wright, T.; Wu, Xing-Hua; Wu, Z.; Yamamoto, K.; Yamato, D.; Yang, Tong-Zhi; Yang, U. K.; Yang, Youhua; Yao, W-M.; Yeh, G. P.; Yi, K.; Yoh, J.; Yorita, K.; Yoshida, T.; Yu, G. B.; Yu, I.; Zanetti, A.; Zeng, Y.; Zhou, C.; Zucchelli, S.

doi:10.1103/physrevd.88.071101

Cited by 46 publications

(31 citation statements)

References 44 publications

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“…Until now, the 1S states of bottom baryon family almost have been established experimentally except the Σ 0 b /Ξ ′0 b with J P = 1/2 + and the Σ * 0 b /Ω * − b with J P = 3/2 + . In addition, two 1P Λ b candidates, i.e., the Λ b (5912) 0 and the Λ b (5920) 0 , have been observed by the LHCb [7] and CDF [8]. Other excited bottom baryons are waiting for exploration.…”

Section: Introductionmentioning

confidence: 99%

Role of newly discovered Ξb(6227)− for constructing excited bottom baryon family

et al. 2018

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Selecting the newly observed Ξ b (6227) − by LHCb as a study example, we decode its inner structure by giving the mass spectrum analysis and the investigation of its two-body strong decay behaviors. Our result indicates that the Ξ b (6227) − is a good candidate of the P-wave Ξ ′ b state with J P = 3/2 − or 5/2 − . In addition, we further provide the information of the properties of the partners of the Ξ b (6227) − . These predicted states include three 2S states and the remaining 1P states in the bottom-strange baryon family. The calculated sizable Okubo-Zweig-Iizuka−allowed decay widths of these partners show that the experimental search for them becomes possible via LHCb. We have a reason to believe that the present study can be treated as a start point for constructing the highly excited bottom baryon spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Role of newly discovered Ξb(6227)− for constructing excited bottom baryon family

et al. 2018

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“…The theoretical studies of the heavy baryons involving their spectroscopic parameters and the interaction mechanisms improve our understanding on the nonperturbative regime of the strong interaction, as well as their nature and internal structure. As a result of the impressive developments in the experimental sector in the last decade, almost all of the ground state baryons with single heavy quark were observed [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…INTRODUCTIONThe theoretical studies of the heavy baryons involving their spectroscopic parameters and the interaction mechanisms improve our understanding on the nonperturbative regime of the strong interaction, as well as their nature and internal structure. As a result of the impressive developments in the experimental sector in the last decade, almost all of the ground state baryons with single heavy quark were observed [1][2][3][4][5][6][7][8][9].The spectroscopy of the heavy baryons containing b quark has been investigated within different models. These approaches include the quark model [10][11][12][13][14][15][16][17][18][19], the QCD sum rule approach [20-24], lattice QCD [25], 1/N c and 1/m b expansions [26] and Faddeev approach [27].…”

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confidence: 99%

Structure of the Ξb(6227)− resonance

et al. 2018

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We explore the recently observed Ξ b (6227) − resonance to fix its quantum numbers. To this end, we consider various possible scenarios: It can be considered as either 1P /2S excitations of the Ξ − b and Ξ ′ b (5935) ground state baryons with spin-1 2 or 1P /2S excitations of the ground-state Ξ b (5955) with spin-3 2 . We calculate the masses of the possible angular-orbital 1P and 2S excited states corresponding to each channel employing the QCD sum rule technique. It is seen that all the obtained masses are in agreement with the experimentally observed value, implying that the mass calculations are not enough to determine the quantum numbers of the state under question. Therefore, we extend the analysis to investigate the possible decays of the excited states into Λ 0 b K − and Ξ − b π. Using the light cone QCD sum rule method, we calculate the corresponding strong coupling constants, which are used to extract the decay widths of the modes under consideration. Our results on decay widths indicate that the Ξ b (6227) − is 1P angular-orbital excited state of the Ξ b (5955) baryon with quantum numbers J P = 3 2 − . I. INTRODUCTIONThe theoretical studies of the heavy baryons involving their spectroscopic parameters and the interaction mechanisms improve our understanding on the nonperturbative regime of the strong interaction, as well as their nature and internal structure. As a result of the impressive developments in the experimental sector in the last decade, almost all of the ground state baryons with single heavy quark were observed [1][2][3][4][5][6][7][8][9].The spectroscopy of the heavy baryons containing b quark has been investigated within different models. These approaches include the quark model [10][11][12][13][14][15][16][17][18][19], the QCD sum rule approach [20-24], lattice QCD [25], 1/N c and 1/m b expansions [26] and Faddeev approach [27]. To gain deeper understanding on the single bottom baryons, their properties such as magnetic dipole moments and strong decays were investigated in Refs. [28][29][30][31][32][33]. In Ref.[34], their strong and radiative decays were studied using the constituent quark model.The quark model predicts existence of many new baryons with one, two, or three heavy quarks. The impressive developments in the experimental techniques indicate that more heavy baryons would be observed in near future. With this motivation and the motivation brought by the recent observation of the LHCb Collaboration [35], we investigate the masses and decay constants of the low-lying 2S and 1P excited Ξ b baryons having J = 1 2 and J = 3 2 . The LHCb collaboration recently reported the observation of Ξ b (6227) − with mass m Ξ b (6227) − = 6226.9 ± 2.0 ± 0.3 ± 0.2 MeV and width Γ Ξ b (6227) − = 18.1 ± 5.4 ± 1.8 MeV. From the observed mass and decay modes, it was stated that Ξ b (6227) − state may be 1P or 2S excited baryon (see also [35]). After this observation, this state is considered in Ref.[36] and its mass and strong decays were analyzed. The obtained results indicated the possibility of...

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“…The properties of these states have been studied experimentally and theoretically (see, e.g., Refs. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] and references therein). In the present analysis, we compare our predictions of the decay widths with other available predictions by quark models [12,13] and chiral effective models [14,15].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Λc(2595) , Λc(2625)
Kawakami
¹
,
Harada
²

2018
Phys. Rev. D
28
2
30
0
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We construct an effective hadronic model including Λ c ð2595Þ, Λ c ð2625Þ, Λ b ð5912Þ, and Λ b ð5920Þ, regarding them as chiral partners to Σ c ð2455Þ, Σ c ð2520Þ, Σ b , and Σ Ã b , respectively, with respecting the chiral symmetry and heavy-quark spin-flavor symmetry. We determine the model parameters from the experimental data for relevant masses and decay widths of Σ ðÃÞ c and Λ c ð2595Þ. Then, we study the decay widths of Λ c ð2625Þ, Λ b ð5912Þ, and Λ b ð5920Þ. We find that, although the decay of Λ c ð2595Þ is dominated by the resonant contribution through Σ c ð2455Þ, nonresonant contributions are important for Λ c ð2625Þ, Λ b ð5912Þ, and Λ b ð5920Þ, which reflects the chiral partner structure. We also study the radiative decays of the baryons, and show that each of their widths is determined from the radiative decay width of their chiral partners.

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Evidence for a bottom baryon resonanceΛb*0in CDF data

Cited by 46 publications

References 44 publications

Role of newly discovered Ξb(6227)− for constructing excited bottom baryon family

Role of newly discovered Ξb(6227)− for constructing excited bottom baryon family

Structure of the Ξb(6227)− resonance

Analysis of Λc(2595) , Λc(2625)
Kawakami
¹
,
Harada
²

2018
Phys. Rev. D
28
2
30
0
View full text Add to dashboard Cite

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Evidence for a bottom baryon resonanceΛb*0in CDF data

Cited by 46 publications

References 44 publications

Role of newly discovered Ξb(6227)− for constructing excited bottom baryon family

Role of newly discovered Ξb(6227)− for constructing excited bottom baryon family

Structure of the Ξb(6227)− resonance

Analysis of Λc(2595) , Λc(2625)Kawakami1, Harada2 2018Phys. Rev. D282300View full textAdd to dashboardCite

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Analysis of Λc(2595) , Λc(2625)
Kawakami
¹
,
Harada
²

2018
Phys. Rev. D
28
2
30
0
View full text Add to dashboard Cite