Charm-anticharm baryon production asymmetries in photon-nucleon interactions

J. M. Link; P. M. Yager; J. C. Anjos; I. Bediaga; C. Göbel; A. A. Machado; J. Magnin; A. Massafferri; J. M. De Miranda; I. M. Pepe; E. Polycarpo; A. C. Dos Reis; S. Carrillo; E. Casimiro; E. Cuautle; A. Sánchez-Hernández; F. Vázquez; C. Uribe; L. Agostino; L. Cinquini; J. P. Cumalat; B. O'Reilly; I. Segoni; M. Wahl; J. N. Butler; H. W.K. Cheung; G. Chiodini; I. Gaines; P. H. Garbincius; L. A. Garren; E. Gottschalk; P. H. Kasper; A. E. Kreymer; R. Kutschke; M. Wang; L. Benussi; M. Bertani; S. Bianco; F. L. Fabbri; A. Zallo; M. Reyes; C. Cawlfield; D. Y. Kim; A. Rahimi; J. Wiss; R. Gardner; A. Kryemadhi; Y. S. Chung; J. S. Kang; B. R. Ko; J. W. Kwak; K. B. Lee; K. Cho; H. Park; G. Alimonti; S. Barberis; M. Boschini; A. Cerutti; P. D'Angelo; M. DiCorato; P. Dini; L. Edera; S. Erba; M. Giammarchi; P. Inzani; F. Leveraro; S. Malvezzi; D. Menasce; M. Mezzadri; L. Moroni; D. Pedrini; C. Pontoglio; F. Prelz; M. Rovere; S. Sala; T. F. Davenport; V. Arena; G. Boca; G. Bonomi; G. Gianini; G. Liguori; M. M. Merlo; D. Pantea; D. Lopes Pegna; S. P. Ratti; C. Riccardi; P. Vitulo; H. Hernandez; A. M. Lopez; E. Luiggi; H. Mendez; A. Paris; J. E. Ramirez; Y. Zhang; J. R. Wilson; T. Handler; R. Mitchell; D. Engh; M. Hosack

doi:10.1016/j.physletb.2003.12.011

Charm-anticharm baryon production asymmetries in photon-nucleon interactions

J. M. Link, P. M. Yager, J. C. Anjos, I. Bediaga, C. Göbel, A. A. Machado, J. Magnin, A. Massafferri, J. M. De Miranda, I. M. Pepe, E. Polycarpo, A. C. Dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, F. Vázquez, C. Uribe, L. Agostino, L. CinquiniJ. P. Cumalat, B. O'Reilly, I. Segoni, M. Wahl, J. N. Butler, H. W.K. Cheung, G. Chiodini, I. Gaines, P. H. Garbincius, L. A. Garren, E. Gottschalk, P. H. Kasper, A. E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F. L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D. Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y. S. Chung, J. S. Kang, B. R. Ko, J. W. Kwak, K. B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T. F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M. M. Merlo, D. Pantea, D. Lopes Pegna, S. P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A. M. Lopez, E. Luiggi, H. Mendez, A. Paris, J. E. Ramirez, Y. Zhang, J. R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack

Research output: Contribution to journal › Article › peer-review

Abstract

We report measurements of the charm-anticharm production asymmetries for Λ_c⁺, Σ_c⁺⁺, Σ _c⁰, Σ_c⁺⁺*, Σ _c⁰*, and Λ_c⁺(2625) baryons from the Fermilab photoproduction experiment FOCUS (E831). These asymmetries are integrated over the region where the spectrometer has good acceptance. In addition, we have obtained results for the photoproduction asymmetries of the Λ_c baryons as functions of p_L, p_T², and x_F. The integrated asymmetry for Λ_c⁺ production, (σ_Λc+ - σ_Λc-)/(σ_Λc+ + σ _Λc-), is 0.111 ± 0.018 ± 0.012, significantly different from zero. The asymmetries of the excited states are consistent with the Λ_c asymmetry.

Original language	English (US)
Pages (from-to)	39-48
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	581
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2003.12.011
State	Published - Feb 12 2004
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2003.12.011

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Link, J. M., Yager, P. M., Anjos, J. C., Bediaga, I., Göbel, C., Machado, A. A., Magnin, J., Massafferri, A., De Miranda, J. M., Pepe, I. M., Polycarpo, E., Dos Reis, A. C., Carrillo, S., Casimiro, E., Cuautle, E., Sánchez-Hernández, A., Vázquez, F., Uribe, C., Agostino, L., ... Hosack, M. (2004). Charm-anticharm baryon production asymmetries in photon-nucleon interactions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 581(1-2), 39-48. https://doi.org/10.1016/j.physletb.2003.12.011

Link, JM, Yager, PM, Anjos, JC, Bediaga, I, Göbel, C, Machado, AA, Magnin, J, Massafferri, A, De Miranda, JM, Pepe, IM, Polycarpo, E, Dos Reis, AC, Carrillo, S, Casimiro, E, Cuautle, E, Sánchez-Hernández, A, Vázquez, F, Uribe, C, Agostino, L, Cinquini, L, Cumalat, JP, O'Reilly, B, Segoni, I, Wahl, M, Butler, JN, Cheung, HWK, Chiodini, G, Gaines, I, Garbincius, PH, Garren, LA, Gottschalk, E, Kasper, PH, Kreymer, AE, Kutschke, R, Wang, M, Benussi, L, Bertani, M, Bianco, S, Fabbri, FL, Zallo, A, Reyes, M, Cawlfield, C, Kim, DY, Rahimi, A, Wiss, J, Gardner, R, Kryemadhi, A, Chung, YS, Kang, JS, Ko, BR, Kwak, JW, Lee, KB, Cho, K, Park, H, Alimonti, G, Barberis, S, Boschini, M, Cerutti, A, D'Angelo, P, DiCorato, M, Dini, P, Edera, L, Erba, S, Giammarchi, M, Inzani, P, Leveraro, F, Malvezzi, S, Menasce, D, Mezzadri, M, Moroni, L, Pedrini, D, Pontoglio, C, Prelz, F, Rovere, M, Sala, S, Davenport, TF, Arena, V, Boca, G, Bonomi, G, Gianini, G, Liguori, G, Merlo, MM, Pantea, D, Lopes Pegna, D, Ratti, SP, Riccardi, C, Vitulo, P, Hernandez, H, Lopez, AM, Luiggi, E, Mendez, H, Paris, A, Ramirez, JE, Zhang, Y, Wilson, JR, Handler, T, Mitchell, R, Engh, D & Hosack, M 2004, 'Charm-anticharm baryon production asymmetries in photon-nucleon interactions', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 581, no. 1-2, pp. 39-48. https://doi.org/10.1016/j.physletb.2003.12.011

@article{3f00050568f84beaa3431e3139f16439,

title = "Charm-anticharm baryon production asymmetries in photon-nucleon interactions",

abstract = "We report measurements of the charm-anticharm production asymmetries for Λc+, Σc++, Σ c0, Σc++*, Σ c0*, and Λc+(2625) baryons from the Fermilab photoproduction experiment FOCUS (E831). These asymmetries are integrated over the region where the spectrometer has good acceptance. In addition, we have obtained results for the photoproduction asymmetries of the Λc baryons as functions of pL, pT2, and xF. The integrated asymmetry for Λc+ production, (σΛc+ - σΛc-)/(σΛc+ + σ Λc-), is 0.111 ± 0.018 ± 0.012, significantly different from zero. The asymmetries of the excited states are consistent with the Λc asymmetry.",

author = "Link, {J. M.} and Yager, {P. M.} and Anjos, {J. C.} and I. Bediaga and C. G{\"o}bel and Machado, {A. A.} and J. Magnin and A. Massafferri and {De Miranda}, {J. M.} and Pepe, {I. M.} and E. Polycarpo and {Dos Reis}, {A. C.} and S. Carrillo and E. Casimiro and E. Cuautle and A. S{\'a}nchez-Hern{\'a}ndez and F. V{\'a}zquez and C. Uribe and L. Agostino and L. Cinquini and Cumalat, {J. P.} and B. O'Reilly and I. Segoni and M. Wahl and Butler, {J. N.} and Cheung, {H. W.K.} and G. Chiodini and I. Gaines and Garbincius, {P. H.} and Garren, {L. A.} and E. Gottschalk and Kasper, {P. H.} and Kreymer, {A. E.} and R. Kutschke and M. Wang and L. Benussi and M. Bertani and S. Bianco and Fabbri, {F. L.} and A. Zallo and M. Reyes and C. Cawlfield and Kim, {D. Y.} and A. Rahimi and J. Wiss and R. Gardner and A. Kryemadhi and Chung, {Y. S.} and Kang, {J. S.} and Ko, {B. R.} and Kwak, {J. W.} and Lee, {K. B.} and K. Cho and H. Park and G. Alimonti and S. Barberis and M. Boschini and A. Cerutti and P. D'Angelo and M. DiCorato and P. Dini and L. Edera and S. Erba and M. Giammarchi and P. Inzani and F. Leveraro and S. Malvezzi and D. Menasce and M. Mezzadri and L. Moroni and D. Pedrini and C. Pontoglio and F. Prelz and M. Rovere and S. Sala and Davenport, {T. F.} and V. Arena and G. Boca and G. Bonomi and G. Gianini and G. Liguori and Merlo, {M. M.} and D. Pantea and {Lopes Pegna}, D. and Ratti, {S. P.} and C. Riccardi and P. Vitulo and H. Hernandez and Lopez, {A. M.} and E. Luiggi and H. Mendez and A. Paris and Ramirez, {J. E.} and Y. Zhang and Wilson, {J. R.} and T. Handler and R. Mitchell and D. Engh and M. Hosack",

note = "Funding Information: We acknowledge the assistance of the staffs of Fermi National Accelerator Laboratory, the INFN of Italy, the physics departments of the collaborating institutions and the Instituto de F{\'ı}sica “Luis Rivera Terrazas” de la Benem{\'e}rita Universidad Aut{\'o}noma de Puebla (IFUAP), M{\'e}xico. This research was supported in part by the US National Science Foundation, the US Department of Energy, the Italian Istituto Nazionale di Fisica Nucleare and Ministero della Istruzione, Universit{\`a} e Ricerca, Organizaci{\'o}n de los Estados Americanos (OEA), IFUAP-M{\'e}xico, CONACyT-M{\'e}xico, the Brazilian Conselho Nacional de Desenvolvimento Cient{\'ı}fico e Tecnol{\'o}gico, the Korean Ministry of Education, and the Korean Science and Engineering Foundation.",

year = "2004",

month = feb,

day = "12",

doi = "10.1016/j.physletb.2003.12.011",

language = "English (US)",

volume = "581",

pages = "39--48",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Charm-anticharm baryon production asymmetries in photon-nucleon interactions

AU - Link, J. M.

AU - Yager, P. M.

AU - Anjos, J. C.

AU - Bediaga, I.

AU - Göbel, C.

AU - Machado, A. A.

AU - Magnin, J.

AU - Massafferri, A.

AU - De Miranda, J. M.

AU - Pepe, I. M.

AU - Polycarpo, E.

AU - Dos Reis, A. C.

AU - Carrillo, S.

AU - Casimiro, E.

AU - Cuautle, E.

AU - Sánchez-Hernández, A.

AU - Vázquez, F.

AU - Uribe, C.

AU - Agostino, L.

AU - Cinquini, L.

AU - Cumalat, J. P.

AU - O'Reilly, B.

AU - Segoni, I.

AU - Wahl, M.

AU - Butler, J. N.

AU - Cheung, H. W.K.

AU - Chiodini, G.

AU - Gaines, I.

AU - Garbincius, P. H.

AU - Garren, L. A.

AU - Gottschalk, E.

AU - Kasper, P. H.

AU - Kreymer, A. E.

AU - Kutschke, R.

AU - Wang, M.

AU - Benussi, L.

AU - Bertani, M.

AU - Bianco, S.

AU - Fabbri, F. L.

AU - Zallo, A.

AU - Reyes, M.

AU - Cawlfield, C.

AU - Kim, D. Y.

AU - Rahimi, A.

AU - Wiss, J.

AU - Gardner, R.

AU - Kryemadhi, A.

AU - Chung, Y. S.

AU - Kang, J. S.

AU - Ko, B. R.

AU - Kwak, J. W.

AU - Lee, K. B.

AU - Cho, K.

AU - Park, H.

AU - Alimonti, G.

AU - Barberis, S.

AU - Boschini, M.

AU - Cerutti, A.

AU - D'Angelo, P.

AU - DiCorato, M.

AU - Dini, P.

AU - Edera, L.

AU - Erba, S.

AU - Giammarchi, M.

AU - Inzani, P.

AU - Leveraro, F.

AU - Malvezzi, S.

AU - Menasce, D.

AU - Mezzadri, M.

AU - Moroni, L.

AU - Pedrini, D.

AU - Pontoglio, C.

AU - Prelz, F.

AU - Rovere, M.

AU - Sala, S.

AU - Davenport, T. F.

AU - Arena, V.

AU - Boca, G.

AU - Bonomi, G.

AU - Gianini, G.

AU - Liguori, G.

AU - Merlo, M. M.

AU - Pantea, D.

AU - Lopes Pegna, D.

AU - Ratti, S. P.

AU - Riccardi, C.

AU - Vitulo, P.

AU - Hernandez, H.

AU - Lopez, A. M.

AU - Luiggi, E.

AU - Mendez, H.

AU - Paris, A.

AU - Ramirez, J. E.

AU - Zhang, Y.

AU - Wilson, J. R.

AU - Handler, T.

AU - Mitchell, R.

AU - Engh, D.

AU - Hosack, M.

N1 - Funding Information: We acknowledge the assistance of the staffs of Fermi National Accelerator Laboratory, the INFN of Italy, the physics departments of the collaborating institutions and the Instituto de Fı́sica “Luis Rivera Terrazas” de la Benemérita Universidad Autónoma de Puebla (IFUAP), México. This research was supported in part by the US National Science Foundation, the US Department of Energy, the Italian Istituto Nazionale di Fisica Nucleare and Ministero della Istruzione, Università e Ricerca, Organización de los Estados Americanos (OEA), IFUAP-México, CONACyT-México, the Brazilian Conselho Nacional de Desenvolvimento Cientı́fico e Tecnológico, the Korean Ministry of Education, and the Korean Science and Engineering Foundation.

PY - 2004/2/12

Y1 - 2004/2/12

N2 - We report measurements of the charm-anticharm production asymmetries for Λc+, Σc++, Σ c0, Σc++*, Σ c0*, and Λc+(2625) baryons from the Fermilab photoproduction experiment FOCUS (E831). These asymmetries are integrated over the region where the spectrometer has good acceptance. In addition, we have obtained results for the photoproduction asymmetries of the Λc baryons as functions of pL, pT2, and xF. The integrated asymmetry for Λc+ production, (σΛc+ - σΛc-)/(σΛc+ + σ Λc-), is 0.111 ± 0.018 ± 0.012, significantly different from zero. The asymmetries of the excited states are consistent with the Λc asymmetry.

AB - We report measurements of the charm-anticharm production asymmetries for Λc+, Σc++, Σ c0, Σc++*, Σ c0*, and Λc+(2625) baryons from the Fermilab photoproduction experiment FOCUS (E831). These asymmetries are integrated over the region where the spectrometer has good acceptance. In addition, we have obtained results for the photoproduction asymmetries of the Λc baryons as functions of pL, pT2, and xF. The integrated asymmetry for Λc+ production, (σΛc+ - σΛc-)/(σΛc+ + σ Λc-), is 0.111 ± 0.018 ± 0.012, significantly different from zero. The asymmetries of the excited states are consistent with the Λc asymmetry.

UR - http://www.scopus.com/inward/record.url?scp=1642431881&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1642431881&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2003.12.011

DO - 10.1016/j.physletb.2003.12.011

M3 - Article

AN - SCOPUS:1642431881

SN - 0370-2693

VL - 581

SP - 39

EP - 48

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Charm-anticharm baryon production asymmetries in photon-nucleon interactions

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