Pentaquark Theta(+) search at HERMES

N. Akopov; Z. Akopov; W. Augustyniak; R. Avakian; A. Avetissian; E. Avetisyan; S. Belostotski; H.P. Blok; A. Borissov; J. Bowles; V. Bryzgalov; J. Burns; G.P. Capitani; E. Cisbani; G. Ciullo; M. Contalbrigo; P.F. Dalpiaz; W. Deconinck; R. De Leo; E. De Sanctis; P. Di Nezza; G. Elbakian; E. Etzelmueller; R. Fabbri; A. Fantoni; L. Felawka; S. Frullani; D. Gabbert; J.G. Garcia; F. Garibaldi; G. Gavrilov; F. Giordano; S. Gliske; M. Hartig; D. Hasch; Y. Holler; I. Hristova; Y. Imazu; A. Ivanilov; H.E. Jackson; S. Joosten; R. Kaiser; G. Karyan; T. Keri; E. Kinney; A. Kisselev; V. Kozlov; P. Kravchenko; V.G. Krivokhijine; L. Lagamba; L. Lapikas; I. Lehmann; A.L. Ruiz; W. Lorenzon; X. Lu; B.-. Ma; D. Mahon; S.I. Manaenkov; Y. Mao; B. Marianski; A.M. de la Ossa; H. Marukyan; C.A. Miller; Y. Miyachi; A. Movsisyan; M. Murray; E. Nappi; A. Nass; M. Negodaev; W.-. Nowak; L.L. Pappalardo; R. Perez-Benito; A. Petrosyan; P.E. Reimer; A.R. Reolon; C. Riedl; K. Rith; G. Rosner; A. Rostomyan; J. Rubin; D. Ryckbosch; Y. Salomatin; G. Schnell; K.P. Schueler; B. Seitz; T.-. Shibata; M. Stancari; J.J.M. Steijger; S. Taroian; A. Terkulov; R. Truty; A. Trzcinski; M. Tytgat; Y. Van Haarlem; C. Van Hulse; D. Veretennikov; V. Vikhrov; I. Vilardi; S. Wang; S. Yaschenko; H. Ye; Z. Ye; S. Yen; B. Zihlmann; P. Zupranski

doi:10.1103/PhysRevD.91.057101

Pentaquark Theta(+) search at HERMES

N. Akopov, Z. Akopov, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetisyan, S. Belostotski, H.P. Blok, A. Borissov, J. Bowles, V. Bryzgalov, J. Burns, G.P. Capitani, E. Cisbani, G. Ciullo, M. Contalbrigo, P.F. Dalpiaz, W. Deconinck, R. De Leo, E. De SanctisP. Di Nezza, G. Elbakian, E. Etzelmueller, R. Fabbri, A. Fantoni, L. Felawka, S. Frullani, D. Gabbert, J.G. Garcia, F. Garibaldi, G. Gavrilov, F. Giordano, S. Gliske, M. Hartig, D. Hasch, Y. Holler, I. Hristova, Y. Imazu, A. Ivanilov, H.E. Jackson, S. Joosten, R. Kaiser, G. Karyan, T. Keri, E. Kinney, A. Kisselev, V. Kozlov, P. Kravchenko, V.G. Krivokhijine, L. Lagamba, L. Lapikas, I. Lehmann, A.L. Ruiz, W. Lorenzon, X. Lu, B.-. Ma, D. Mahon, S.I. Manaenkov, Y. Mao, B. Marianski, A.M. de la Ossa, H. Marukyan, C.A. Miller, Y. Miyachi, A. Movsisyan, M. Murray, E. Nappi, A. Nass, M. Negodaev, W.-. Nowak, L.L. Pappalardo, R. Perez-Benito, A. Petrosyan, P.E. Reimer, A.R. Reolon, C. Riedl, K. Rith, G. Rosner, A. Rostomyan, J. Rubin, D. Ryckbosch, Y. Salomatin, G. Schnell, K.P. Schueler, B. Seitz, T.-. Shibata, M. Stancari, J.J.M. Steijger, S. Taroian, A. Terkulov, R. Truty, A. Trzcinski, M. Tytgat, Y. Van Haarlem, C. Van Hulse, D. Veretennikov, V. Vikhrov, I. Vilardi, S. Wang, S. Yaschenko, H. Ye, Z. Ye, S. Yen, B. Zihlmann, P. Zupranski

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Abstract

The earlier search at HERMES for narrow baryon states excited in quasireal photoproduction, decaying through the channel pKS0→pπ+π-, has been extended with improved decay-particle reconstruction, more advanced particle identification, and increased event samples. The structure observed earlier at an invariant mass of 1528 MeV shifts to 1522 MeV and the statistical significance drops to about 2σ for data taken with a deuterium target. The number of events above background is 68-31+98(stat)±13(sys). No such structure is observed in the hydrogen data set.

Original language	Undefined/Unknown
Pages (from-to)	057101-057101
Journal	Physical Review D
Volume	91
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.91.057101
Publication status	Published - 2015

Bibliographical note

PT: J; NR: 20; TC: 0; J9: PHYS REV D; PG: 5; GA: CE8AF; UT: WOS:000352062400003

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10.1103/PhysRevD.91.057101

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Akopov, N., Akopov, Z., Augustyniak, W., Avakian, R., Avetissian, A., Avetisyan, E., Belostotski, S., Blok, H. P., Borissov, A., Bowles, J., Bryzgalov, V., Burns, J., Capitani, G. P., Cisbani, E., Ciullo, G., Contalbrigo, M., Dalpiaz, P. F., Deconinck, W., De Leo, R., ... Zupranski, P. (2015). Pentaquark Theta(+) search at HERMES. Physical Review D, 91(5), 057101-057101. https://doi.org/10.1103/PhysRevD.91.057101

@article{86497c91d3b64fa5879fdd8d3b04e79a,

title = "Pentaquark Theta(+) search at HERMES",

abstract = "The earlier search at HERMES for narrow baryon states excited in quasireal photoproduction, decaying through the channel pKS0→pπ+π-, has been extended with improved decay-particle reconstruction, more advanced particle identification, and increased event samples. The structure observed earlier at an invariant mass of 1528 MeV shifts to 1522 MeV and the statistical significance drops to about 2σ for data taken with a deuterium target. The number of events above background is 68-31+98(stat)±13(sys). No such structure is observed in the hydrogen data set.",

author = "N. Akopov and Z. Akopov and W. Augustyniak and R. Avakian and A. Avetissian and E. Avetisyan and S. Belostotski and H.P. Blok and A. Borissov and J. Bowles and V. Bryzgalov and J. Burns and G.P. Capitani and E. Cisbani and G. Ciullo and M. Contalbrigo and P.F. Dalpiaz and W. Deconinck and \{De Leo\}, R. and \{De Sanctis\}, E. and \{Di Nezza\}, P. and G. Elbakian and E. Etzelmueller and R. Fabbri and A. Fantoni and L. Felawka and S. Frullani and D. Gabbert and J.G. Garcia and F. Garibaldi and G. Gavrilov and F. Giordano and S. Gliske and M. Hartig and D. Hasch and Y. Holler and I. Hristova and Y. Imazu and A. Ivanilov and H.E. Jackson and S. Joosten and R. Kaiser and G. Karyan and T. Keri and E. Kinney and A. Kisselev and V. Kozlov and P. Kravchenko and V.G. Krivokhijine and L. Lagamba and L. Lapikas and I. Lehmann and A.L. Ruiz and W. Lorenzon and X. Lu and B.-. Ma and D. Mahon and S.I. Manaenkov and Y. Mao and B. Marianski and \{de la Ossa\}, A.M. and H. Marukyan and C.A. Miller and Y. Miyachi and A. Movsisyan and M. Murray and E. Nappi and A. Nass and M. Negodaev and W.-. Nowak and L.L. Pappalardo and R. Perez-Benito and A. Petrosyan and P.E. Reimer and A.R. Reolon and C. Riedl and K. Rith and G. Rosner and A. Rostomyan and J. Rubin and D. Ryckbosch and Y. Salomatin and G. Schnell and K.P. Schueler and B. Seitz and T.-. Shibata and M. Stancari and J.J.M. Steijger and S. Taroian and A. Terkulov and R. Truty and A. Trzcinski and M. Tytgat and \{Van Haarlem\}, Y. and \{Van Hulse\}, C. and D. Veretennikov and V. Vikhrov and I. Vilardi and S. Wang and S. Yaschenko and H. Ye and Z. Ye and S. Yen and B. Zihlmann and P. Zupranski",

note = "PT: J; NR: 20; TC: 0; J9: PHYS REV D; PG: 5; GA: CE8AF; UT: WOS:000352062400003",

year = "2015",

doi = "10.1103/PhysRevD.91.057101",

language = "Undefined/Unknown",

volume = "91",

pages = "057101--057101",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "American Physical Society",

number = "5",

}

Akopov, N, Akopov, Z, Augustyniak, W, Avakian, R, Avetissian, A, Avetisyan, E, Belostotski, S, Blok, HP, Borissov, A, Bowles, J, Bryzgalov, V, Burns, J, Capitani, GP, Cisbani, E, Ciullo, G, Contalbrigo, M, Dalpiaz, PF, Deconinck, W, De Leo, R, De Sanctis, E, Di Nezza, P, Elbakian, G, Etzelmueller, E, Fabbri, R, Fantoni, A, Felawka, L, Frullani, S, Gabbert, D, Garcia, JG, Garibaldi, F, Gavrilov, G, Giordano, F, Gliske, S, Hartig, M, Hasch, D, Holler, Y, Hristova, I, Imazu, Y, Ivanilov, A, Jackson, HE, Joosten, S, Kaiser, R, Karyan, G, Keri, T, Kinney, E, Kisselev, A, Kozlov, V, Kravchenko, P, Krivokhijine, VG, Lagamba, L, Lapikas, L, Lehmann, I, Ruiz, AL, Lorenzon, W, Lu, X, Ma, B, Mahon, D, Manaenkov, SI, Mao, Y, Marianski, B, de la Ossa, AM, Marukyan, H, Miller, CA, Miyachi, Y, Movsisyan, A, Murray, M, Nappi, E, Nass, A, Negodaev, M, Nowak, W, Pappalardo, LL, Perez-Benito, R, Petrosyan, A, Reimer, PE, Reolon, AR, Riedl, C, Rith, K, Rosner, G, Rostomyan, A, Rubin, J, Ryckbosch, D, Salomatin, Y, Schnell, G, Schueler, KP, Seitz, B, Shibata, T, Stancari, M, Steijger, JJM, Taroian, S, Terkulov, A, Truty, R, Trzcinski, A, Tytgat, M, Van Haarlem, Y, Van Hulse, C, Veretennikov, D, Vikhrov, V, Vilardi, I, Wang, S, Yaschenko, S, Ye, H, Ye, Z, Yen, S, Zihlmann, B & Zupranski, P 2015, 'Pentaquark Theta(+) search at HERMES', Physical Review D, vol. 91, no. 5, pp. 057101-057101. https://doi.org/10.1103/PhysRevD.91.057101

TY - JOUR

T1 - Pentaquark Theta(+) search at HERMES

AU - Akopov, N.

AU - Akopov, Z.

AU - Augustyniak, W.

AU - Avakian, R.

AU - Avetissian, A.

AU - Avetisyan, E.

AU - Belostotski, S.

AU - Blok, H.P.

AU - Borissov, A.

AU - Bowles, J.

AU - Bryzgalov, V.

AU - Burns, J.

AU - Capitani, G.P.

AU - Cisbani, E.

AU - Ciullo, G.

AU - Contalbrigo, M.

AU - Dalpiaz, P.F.

AU - Deconinck, W.

AU - De Leo, R.

AU - De Sanctis, E.

AU - Di Nezza, P.

AU - Elbakian, G.

AU - Etzelmueller, E.

AU - Fabbri, R.

AU - Fantoni, A.

AU - Felawka, L.

AU - Frullani, S.

AU - Gabbert, D.

AU - Garcia, J.G.

AU - Garibaldi, F.

AU - Gavrilov, G.

AU - Giordano, F.

AU - Gliske, S.

AU - Hartig, M.

AU - Hasch, D.

AU - Holler, Y.

AU - Hristova, I.

AU - Imazu, Y.

AU - Ivanilov, A.

AU - Jackson, H.E.

AU - Joosten, S.

AU - Kaiser, R.

AU - Karyan, G.

AU - Keri, T.

AU - Kinney, E.

AU - Kisselev, A.

AU - Kozlov, V.

AU - Kravchenko, P.

AU - Krivokhijine, V.G.

AU - Lagamba, L.

AU - Lapikas, L.

AU - Lehmann, I.

AU - Ruiz, A.L.

AU - Lorenzon, W.

AU - Lu, X.

AU - Ma, B.-.

AU - Mahon, D.

AU - Manaenkov, S.I.

AU - Mao, Y.

AU - Marianski, B.

AU - de la Ossa, A.M.

AU - Marukyan, H.

AU - Miller, C.A.

AU - Miyachi, Y.

AU - Movsisyan, A.

AU - Murray, M.

AU - Nappi, E.

AU - Nass, A.

AU - Negodaev, M.

AU - Nowak, W.-.

AU - Pappalardo, L.L.

AU - Perez-Benito, R.

AU - Petrosyan, A.

AU - Reimer, P.E.

AU - Reolon, A.R.

AU - Riedl, C.

AU - Rith, K.

AU - Rosner, G.

AU - Rostomyan, A.

AU - Rubin, J.

AU - Ryckbosch, D.

AU - Salomatin, Y.

AU - Schnell, G.

AU - Schueler, K.P.

AU - Seitz, B.

AU - Shibata, T.-.

AU - Stancari, M.

AU - Steijger, J.J.M.

AU - Taroian, S.

AU - Terkulov, A.

AU - Truty, R.

AU - Trzcinski, A.

AU - Tytgat, M.

AU - Van Haarlem, Y.

AU - Van Hulse, C.

AU - Veretennikov, D.

AU - Vikhrov, V.

AU - Vilardi, I.

AU - Wang, S.

AU - Yaschenko, S.

AU - Ye, H.

AU - Ye, Z.

AU - Yen, S.

AU - Zihlmann, B.

AU - Zupranski, P.

N1 - PT: J; NR: 20; TC: 0; J9: PHYS REV D; PG: 5; GA: CE8AF; UT: WOS:000352062400003

PY - 2015

Y1 - 2015

N2 - The earlier search at HERMES for narrow baryon states excited in quasireal photoproduction, decaying through the channel pKS0→pπ+π-, has been extended with improved decay-particle reconstruction, more advanced particle identification, and increased event samples. The structure observed earlier at an invariant mass of 1528 MeV shifts to 1522 MeV and the statistical significance drops to about 2σ for data taken with a deuterium target. The number of events above background is 68-31+98(stat)±13(sys). No such structure is observed in the hydrogen data set.

AB - The earlier search at HERMES for narrow baryon states excited in quasireal photoproduction, decaying through the channel pKS0→pπ+π-, has been extended with improved decay-particle reconstruction, more advanced particle identification, and increased event samples. The structure observed earlier at an invariant mass of 1528 MeV shifts to 1522 MeV and the statistical significance drops to about 2σ for data taken with a deuterium target. The number of events above background is 68-31+98(stat)±13(sys). No such structure is observed in the hydrogen data set.

UR - https://www.scopus.com/pages/publications/84927636364

UR - https://www.scopus.com/inward/citedby.url?scp=84927636364&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.91.057101

DO - 10.1103/PhysRevD.91.057101

M3 - Article

SN - 1550-7998

VL - 91

SP - 57101

EP - 57101

JO - Physical Review D

JF - Physical Review D

IS - 5

ER -

Pentaquark Theta(+) search at HERMES

Abstract

Bibliographical note

Access to Document

Persistent URL (handle)

Other files and links

Cite this