Pentaquark Θ+ 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. Etzelmüller; R. Fabbri; A. Fantoni; L. Felawka; S. Frullani; D. Gabbert; J. Garay García; 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. Lapikás; I. Lehmann; A. López Ruiz; W. Lorenzon; X. Lu; B. Q. Ma; D. Mahon; S. I. Manaenkov; Y. Mao; B. Marianski; A. Martinez De La Ossa; H. Marukyan; C. A. Miller; Y. Miyachi; A. Movsisyan; M. Murray; E. Nappi; A. Nass; M. Negodaev; W. D. 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. Schüler; B. Seitz; T. A. 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 Θ+ 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. Etzelmüller, R. Fabbri, A. Fantoni, L. Felawka, S. Frullani, D. Gabbert, J. Garay García, 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. Lapikás, I. Lehmann, A. López Ruiz, W. Lorenzon, X. Lu, B. Q. Ma, D. Mahon, S. I. Manaenkov, Y. Mao, B. Marianski, A. Martinez De La Ossa, H. Marukyan, C. A. Miller, Y. Miyachi, A. Movsisyan, M. Murray, E. Nappi, A. Nass, M. Negodaev, W. D. 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. Schüler, B. Seitz, T. A. 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

Physics

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

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	English (US)
Article number	057101
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	91
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.91.057101
State	Published - Mar 31 2015

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

Online availability

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 Θ+ search at HERMES. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91(5), Article 057101. https://doi.org/10.1103/PhysRevD.91.057101

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, Etzelmüller, E, Fabbri, R, Fantoni, A, Felawka, L, Frullani, S, Gabbert, D, Garay García, J, 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, Lapikás, L, Lehmann, I, López Ruiz, A, Lorenzon, W, Lu, X, Ma, BQ, Mahon, D, Manaenkov, SI, Mao, Y, Marianski, B, Martinez De La Ossa, A, Marukyan, H, Miller, CA, Miyachi, Y, Movsisyan, A, Murray, M, Nappi, E, Nass, A, Negodaev, M, Nowak, WD, 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, Schüler, KP, Seitz, B, Shibata, TA, 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 Θ+ search at HERMES', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 91, no. 5, 057101. https://doi.org/10.1103/PhysRevD.91.057101

@article{09fc6b2f303c4953857d0d15361ee804,

title = "Pentaquark Θ+ 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 Blok, {H. P.} and A. Borissov and J. Bowles and V. Bryzgalov and J. Burns and Capitani, {G. P.} and E. Cisbani and G. Ciullo and M. Contalbrigo and Dalpiaz, {P. F.} and W. Deconinck and {De Leo}, R. and {De Sanctis}, E. and {Di Nezza}, P. and G. Elbakian and E. Etzelm{\"u}ller and R. Fabbri and A. Fantoni and L. Felawka and S. Frullani and D. Gabbert and {Garay Garc{\'i}a}, J. 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 Jackson, {H. E.} 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 Krivokhijine, {V. G.} and L. Lagamba and L. Lapik{\'a}s and I. Lehmann and {L{\'o}pez Ruiz}, A. and W. Lorenzon and X. Lu and Ma, {B. Q.} and D. Mahon and Manaenkov, {S. I.} and Y. Mao and B. Marianski and {Martinez De La Ossa}, A. and H. Marukyan and Miller, {C. A.} and Y. Miyachi and A. Movsisyan and M. Murray and E. Nappi and A. Nass and M. Negodaev and Nowak, {W. D.} and Pappalardo, {L. L.} and R. Perez-Benito and A. Petrosyan and Reimer, {P. E.} and Reolon, {A. R.} 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 Sch{\"u}ler, {K. P.} and B. Seitz and Shibata, {T. A.} and M. Stancari and Steijger, {J. J.M.} 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 = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

month = mar,

day = "31",

doi = "10.1103/PhysRevD.91.057101",

language = "English (US)",

volume = "91",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

number = "5",

}

TY - JOUR

T1 - Pentaquark Θ+ 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 - Etzelmüller, E.

AU - Fabbri, R.

AU - Fantoni, A.

AU - Felawka, L.

AU - Frullani, S.

AU - Gabbert, D.

AU - Garay García, J.

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 - Lapikás, L.

AU - Lehmann, I.

AU - López Ruiz, A.

AU - Lorenzon, W.

AU - Lu, X.

AU - Ma, B. Q.

AU - Mahon, D.

AU - Manaenkov, S. I.

AU - Mao, Y.

AU - Marianski, B.

AU - Martinez De La Ossa, A.

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. D.

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 - Schüler, K. P.

AU - Seitz, B.

AU - Shibata, T. A.

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.

PY - 2015/3/31

Y1 - 2015/3/31

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 - http://www.scopus.com/inward/record.url?scp=84927636364&partnerID=8YFLogxK

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

U2 - 10.1103/PhysRevD.91.057101

DO - 10.1103/PhysRevD.91.057101

M3 - Article

AN - SCOPUS:84927636364

SN - 1550-7998

VL - 91

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 5

M1 - 057101

ER -

Pentaquark Θ+ search at HERMES

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