Evidence for a narrow baryonic state decaying to KS0p and KS0p̄ in deep inelastic scattering at HERA

S. Chekanov; M. Derrick; J. H. Loizides; S. Magill; S. Miglioranzi; B. Musgrave; J. Repond; R. Yoshida; M. C.K. Mattingly; N. Pavel; P. Antonioli; G. Bari; M. Basile; L. Bellagamba; D. Boscherini; A. Bruni; G. Bruni; G. Cara Romeo; L. Cifarelli; F. Cindolo; A. Contin; M. Corradi; S. de Pasquale; P. Giusti; G. Iacobucci; A. Margotti; A. Montanari; R. Nania; F. Palmonari; A. Pesci; L. Rinaldi; G. Sartorelli; A. Zichichi; G. Aghuzumtsyan; D. Bartsch; I. Brock; S. Goers; H. Hartmann; E. Hilger; P. Irrgang; H. P. Jakob; O. Kind; U. Meyer; E. Paul; J. Rautenberg; R. Renner; A. Stifutkin; J. Tandler; K. C. Voss; M. Wang; D. S. Bailey; N. H. Brook; J. E. Cole; G. P. Heath; T. Namsoo; S. Robins; M. Wing; M. Capua; A. Mastroberardino; M. Schioppa; G. Susinno; J. Y. Kim; I. T. Lim; K. J. Ma; M. Y. Pac; M. Helbich; Y. Ning; Z. Ren; W. B. Schmidke; F. Sciulli; J. Chwastowski; A. Eskreys; J. Figiel; A. Galas; K. Olkiewicz; P. Stopa; L. Zawiejski; L. Adamczyk; T. Bold; I. Grabowska-Bold; D. Kisielewska; A. M. Kowal; M. Kowal; J. Łukasik; M. Przybycień; L. Suszycki; D. Szuba; J. Szuba; A. Kotański; W. Slomiński; V. Adler; U. Behrens; I. Bloch; K. Borras; V. Chiochia; D. Dannheim; G. Drews; J. Fourletova; U. Fricke; A. Geiser; P. Göttlicher; O. Gutsche; T. Haas; W. Hain; S. Hillert; C. Horn; B. Kahle; U. Kötz; H. Kowalski; G. Kramberger; H. Labes; D. Lelas; H. Lim; B. Löhr; R. Mankel; I. A. Melzer-Pellmann; C. N. Nguyen; D. Notz; A. E. Nuncio-Quiroz; A. Polini; A. Raval; L. Rurua; U. Schneekloth; U. Stösslein; G. Wolf; C. Youngman; W. Zeuner; S. Schlenstedt; G. Barbagli; E. Gallo; C. Genta; P. G. Pelfer; A. Bamberger; A. Benen; F. Karstens; D. Dobur; N. N. Vlasov; M. Bell; P. J. Bussey; A. T. Doyle; J. Ferrando; J. Hamilton; S. Hanlon; D. H. Saxon; I. O. Skillicorn; I. Gialas; T. Carli; T. Gosau; U. Holm; N. Krumnack; E. Lohrmann; M. Milite; H. Salehi; P. Schleper; T. Schörner-Sadenius; S. Stonjek; K. Wichmann; K. Wick; A. Ziegler; A. Ziegler; C. Collins-Tooth; C. Foudas; R. Gonçalo; K. R. Long; A. D. Tapper; P. Cloth; D. Filges; M. Kataoka; K. Nagano; K. Tokushuku; S. Yamada; Y. Yamazaki; A. N. Barakbaev; E. G. Boos; N. S. Pokrovskiy; B. O. Zhautykov; D. Son; K. Piotrzkowski; F. Barreiro; C. Glasman; O. González; L. Labarga; J. del Peso; E. Tassi; J. Terrón; M. Zambrana; M. Barbi; F. Corriveau; S. Gliga; J. Lainesse; S. Padhi; D. G. Stairs; R. Walsh; T. Tsurugai; A. Antonov; P. Danilov; B. A. Dolgoshein; D. Gladkov; V. Sosnovtsev; S. Suchkov; R. K. Dementiev; P. F. Ermolov; I. I. Katkov; L. A. Khein; I. A. Korzhavina; V. A. Kuzmin; B. B. Levchenko; O. Y. Lukina; A. S. Proskuryakov; L. M. Shcheglova; S. A. Zotkin; I. Abt; C. Büttner; A. Caldwell; X. Liu; J. Sutiak; N. Coppola; S. Grijpink; E. Koffeman; P. Kooijman; E. Maddox; A. Pellegrino; S. Schagen; H. Tiecke; M. Vázquez; L. Wiggers; E. de Wolf; N. Brümmer; B. Bylsma; L. S. Durkin; T. Y. Ling; A. M. Cooper-Sarkar; A. Cottrell; R. C.E. Devenish; B. Foster; G. Grzelak; C. Gwenlan; T. Kohno; S. Patel; P. B. Straub; R. Walczak; A. Bertolin; R. Brugnera; R. Carlin; F. Dal Corso; S. Dusini; A. Garfagnini; S. Limentani; A. Longhin; A. Parenti; M. Posocco; L. Stanco; M. Turcato; E. A. Heaphy; F. Metlica; B. Y. Oh; J. J. Whitmore; Y. Iga; G. D'Agostini; G. Marini; A. Nigro; C. Cormack; J. C. Hart; N. A. McCubbin; C. Heusch; I. H. Park; H. Abramowicz; A. Gabareen; S. Kananov; A. Kreisel; A. Levy; M. Kuze; T. Fusayasu; S. Kagawa; T. Tawara; T. Yamashita; R. Hamatsu; T. Hirose; M. Inuzuka; H. Kaji; S. Kitamura; K. Matsuzawa; M. Costa; M. I. Ferrero; V. Monaco; R. Sacchi; A. Solano; M. Arneodo; M. Ruspa; T. Koop; J. F. Martin; A. Mirea; J. M. Butterworth; R. Hall-Wilton; T. W. Jones; M. S. Lightwood; M. R. Sutton; C. Targett-Adams; J. Ciborowski; R. Ciesielski; P. Łuzniak; R. J. Nowak; J. M. Pawlak; J. Sztuk; T. Tymieniecka; A. Ukleja; J. Ukleja; A. F. Zarnecki; M. Adamus; P. Plucinski; Y. Eisenberg; D. Hochman; U. Karshon; M. Riveline; A. Everett; L. K. Gladilin; D. Kçira; S. Lammers; L. Li; D. D. Reeder; M. Rosin; P. Ryan; A. A. Savin; W. H. Smith; S. Dhawan; S. Bhadra; C. D. Catterall; S. Fourletov; G. Hartner; S. Menary; M. Soares; J. Standage

doi:10.1016/j.physletb.2004.04.024

Evidence for a narrow baryonic state decaying to K_S⁰p and K_S⁰p̄ in deep inelastic scattering at HERA

S. Chekanov, M. Derrick, J. H. Loizides, S. Magill, S. Miglioranzi, B. Musgrave, J. Repond, R. Yoshida, M. C.K. Mattingly, N. Pavel, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. CindoloA. Contin, M. Corradi, S. de Pasquale, P. Giusti, G. Iacobucci, A. Margotti, A. Montanari, R. Nania, F. Palmonari, A. Pesci, L. Rinaldi, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch, I. Brock, S. Goers, H. Hartmann, E. Hilger, P. Irrgang, H. P. Jakob, O. Kind, U. Meyer, E. Paul, J. Rautenberg, R. Renner, A. Stifutkin, J. Tandler, K. C. Voss, M. Wang, D. S. Bailey, N. H. Brook, J. E. Cole, G. P. Heath, T. Namsoo, S. Robins, M. Wing, M. Capua, A. Mastroberardino, M. Schioppa, G. Susinno, J. Y. Kim, I. T. Lim, K. J. Ma, M. Y. Pac, M. Helbich, Y. Ning, Z. Ren, W. B. Schmidke, F. Sciulli, J. Chwastowski, A. Eskreys, J. Figiel, A. Galas, K. Olkiewicz, P. Stopa, L. Zawiejski, L. Adamczyk, T. Bold, I. Grabowska-Bold, D. Kisielewska, A. M. Kowal, M. Kowal, J. Łukasik, M. Przybycień, L. Suszycki, D. Szuba, J. Szuba, A. Kotański, W. Slomiński, V. Adler, U. Behrens, I. Bloch, K. Borras, V. Chiochia, D. Dannheim, G. Drews, J. Fourletova, U. Fricke, A. Geiser, P. Göttlicher, O. Gutsche, T. Haas, W. Hain, S. Hillert, C. Horn, B. Kahle, U. Kötz, H. Kowalski, G. Kramberger, H. Labes, D. Lelas, H. Lim, B. Löhr, R. Mankel, I. A. Melzer-Pellmann, C. N. Nguyen, D. Notz, A. E. Nuncio-Quiroz, A. Polini, A. Raval, L. Rurua, U. Schneekloth, U. Stösslein, G. Wolf, C. Youngman, W. Zeuner, S. Schlenstedt, G. Barbagli, E. Gallo, C. Genta, P. G. Pelfer, A. Bamberger, A. Benen, F. Karstens, D. Dobur, N. N. Vlasov, M. Bell, P. J. Bussey, A. T. Doyle, J. Ferrando, J. Hamilton, S. Hanlon, D. H. Saxon, I. O. Skillicorn, I. Gialas, T. Carli, T. Gosau, U. Holm, N. Krumnack, E. Lohrmann, M. Milite, H. Salehi, P. Schleper, T. Schörner-Sadenius, S. Stonjek, K. Wichmann, K. Wick, A. Ziegler, A. Ziegler, C. Collins-Tooth, C. Foudas, R. Gonçalo, K. R. Long, A. D. Tapper, P. Cloth, D. Filges, M. Kataoka, K. Nagano, K. Tokushuku, S. Yamada, Y. Yamazaki, A. N. Barakbaev, E. G. Boos, N. S. Pokrovskiy, B. O. Zhautykov, D. Son, K. Piotrzkowski, F. Barreiro, C. Glasman, O. González, L. Labarga, J. del Peso, E. Tassi, J. Terrón, M. Zambrana, M. Barbi, F. Corriveau, S. Gliga, J. Lainesse, S. Padhi, D. G. Stairs, R. Walsh, T. Tsurugai, A. Antonov, P. Danilov, B. A. Dolgoshein, D. Gladkov, V. Sosnovtsev, S. Suchkov, R. K. Dementiev, P. F. Ermolov, I. I. Katkov, L. A. Khein, I. A. Korzhavina, V. A. Kuzmin, B. B. Levchenko, O. Y. Lukina, A. S. Proskuryakov, L. M. Shcheglova, S. A. Zotkin, I. Abt, C. Büttner, A. Caldwell, X. Liu, J. Sutiak, N. Coppola, S. Grijpink, E. Koffeman, P. Kooijman, E. Maddox, A. Pellegrino, S. Schagen, H. Tiecke, M. Vázquez, L. Wiggers, E. de Wolf, N. Brümmer, B. Bylsma, L. S. Durkin, T. Y. Ling, A. M. Cooper-Sarkar, A. Cottrell, R. C.E. Devenish, B. Foster, G. Grzelak, C. Gwenlan, T. Kohno, S. Patel, P. B. Straub, R. Walczak, A. Bertolin, R. Brugnera, R. Carlin, F. Dal Corso, S. Dusini, A. Garfagnini, S. Limentani, A. Longhin, A. Parenti, M. Posocco, L. Stanco, M. Turcato, E. A. Heaphy, F. Metlica, B. Y. Oh, J. J. Whitmore, Y. Iga, G. D'Agostini, G. Marini, A. Nigro, C. Cormack, J. C. Hart, N. A. McCubbin, C. Heusch, I. H. Park, H. Abramowicz, A. Gabareen, S. Kananov, A. Kreisel, A. Levy, M. Kuze, T. Fusayasu, S. Kagawa, T. Tawara, T. Yamashita, R. Hamatsu, T. Hirose, M. Inuzuka, H. Kaji, S. Kitamura, K. Matsuzawa, M. Costa, M. I. Ferrero, V. Monaco, R. Sacchi, A. Solano, M. Arneodo, M. Ruspa, T. Koop, J. F. Martin, A. Mirea, J. M. Butterworth, R. Hall-Wilton, T. W. Jones, M. S. Lightwood, M. R. Sutton, C. Targett-Adams, J. Ciborowski, R. Ciesielski, P. Łuzniak, R. J. Nowak, J. M. Pawlak, J. Sztuk, T. Tymieniecka, A. Ukleja, J. Ukleja, A. F. Zarnecki, M. Adamus, P. Plucinski, Y. Eisenberg, D. Hochman, U. Karshon, M. Riveline, A. Everett, L. K. Gladilin, D. Kçira, S. Lammers, L. Li, D. D. Reeder, M. Rosin, P. Ryan, A. A. Savin, W. H. Smith, S. Dhawan, S. Bhadra, C. D. Catterall, S. Fourletov, G. Hartner, S. Menary, M. Soares, J. Standage

Dipartimento di Scienze della Salute

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

A resonance search has been made in the K⁰_Sp and K⁰_Sp̄ invariant-mass spectrum measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb^-1. The search was performed in the central rapidity region of inclusive deep inelastic scattering at an ep centre-of-mass energy of 300-318 GeV for exchanged photon virtuality, Q², above 1 GeV². Recent results from fixed-target experiments give evidence for a narrow baryon resonance decaying to K⁺n and K⁰_Sp, interpreted as a pentaquark. The results presented here support the existence of such state, with a mass of 1521.5±1.5(stat.)^+2.8_-1.7(syst.) MeV and a Gaussian width consistent with the experimental resolution of 2 MeV. The signal is visible at high Q² and, for Q²>20 GeV², contains 221±48 events. The probability of a similar signal anywhere in the range 1500-1560 MeV arising from fluctuations of the background is below 6×10^-5.

Lingua originale	Inglese
pagine (da-a)	7-22
Numero di pagine	16
Rivista	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	591
Numero di pubblicazione	1-2
DOI	https://doi.org/10.1016/j.physletb.2004.04.024
Stato di pubblicazione	Pubblicato - 1 lug 2004

Accesso al documento

10.1016/j.physletb.2004.04.024

Altri file e collegamenti

Link to publication in Scopus

Cita questo

Chekanov, S., Derrick, M., Loizides, J. H., Magill, S., Miglioranzi, S., Musgrave, B., Repond, J., Yoshida, R., Mattingly, M. C. K., Pavel, N., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Cara Romeo, G., Cifarelli, L., ... Standage, J. (2004). Evidence for a narrow baryonic state decaying to K_S⁰p and K_S⁰p̄ in deep inelastic scattering at HERA. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 591(1-2), 7-22. https://doi.org/10.1016/j.physletb.2004.04.024

@article{ddf16d0b2bc841eda114001081dd3543,

title = "Evidence for a narrow baryonic state decaying to KS0p and KS0{\=p} in deep inelastic scattering at HERA",

abstract = "A resonance search has been made in the K0Sp and K0S{\=p} invariant-mass spectrum measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb-1. The search was performed in the central rapidity region of inclusive deep inelastic scattering at an ep centre-of-mass energy of 300-318 GeV for exchanged photon virtuality, Q2, above 1 GeV2. Recent results from fixed-target experiments give evidence for a narrow baryon resonance decaying to K+n and K0Sp, interpreted as a pentaquark. The results presented here support the existence of such state, with a mass of 1521.5±1.5(stat.)+2.8-1.7(syst.) MeV and a Gaussian width consistent with the experimental resolution of 2 MeV. The signal is visible at high Q2 and, for Q2>20 GeV2, contains 221±48 events. The probability of a similar signal anywhere in the range 1500-1560 MeV arising from fluctuations of the background is below 6×10-5.",

author = "S. Chekanov and M. Derrick and Loizides, {J. H.} and S. Magill and S. Miglioranzi and B. Musgrave and J. Repond and R. Yoshida and Mattingly, {M. C.K.} and N. Pavel and P. Antonioli and G. Bari and M. Basile and L. Bellagamba and D. Boscherini and A. Bruni and G. Bruni and {Cara Romeo}, G. and L. Cifarelli and F. Cindolo and A. Contin and M. Corradi and {de Pasquale}, S. and P. Giusti and G. Iacobucci and A. Margotti and A. Montanari and R. Nania and F. Palmonari and A. Pesci and L. Rinaldi and G. Sartorelli and A. Zichichi and G. Aghuzumtsyan and D. Bartsch and I. Brock and S. Goers and H. Hartmann and E. Hilger and P. Irrgang and Jakob, {H. P.} and O. Kind and U. Meyer and E. Paul and J. Rautenberg and R. Renner and A. Stifutkin and J. Tandler and Voss, {K. C.} and M. Wang and Bailey, {D. S.} and Brook, {N. H.} and Cole, {J. E.} and Heath, {G. P.} and T. Namsoo and S. Robins and M. Wing and M. Capua and A. Mastroberardino and M. Schioppa and G. Susinno and Kim, {J. Y.} and Lim, {I. T.} and Ma, {K. J.} and Pac, {M. Y.} and M. Helbich and Y. Ning and Z. Ren and Schmidke, {W. B.} and F. Sciulli and J. Chwastowski and A. Eskreys and J. Figiel and A. Galas and K. Olkiewicz and P. Stopa and L. Zawiejski and L. Adamczyk and T. Bold and I. Grabowska-Bold and D. Kisielewska and Kowal, {A. M.} and M. Kowal and J. {\L}ukasik and M. Przybycie{\'n} and L. Suszycki and D. Szuba and J. Szuba and A. Kota{\'n}ski and W. Slomi{\'n}ski and V. Adler and U. Behrens and I. Bloch and K. Borras and V. Chiochia and D. Dannheim and G. Drews and J. Fourletova and U. Fricke and A. Geiser and P. G{\"o}ttlicher and O. Gutsche and T. Haas and W. Hain and S. Hillert and C. Horn and B. Kahle and U. K{\"o}tz and H. Kowalski and G. Kramberger and H. Labes and D. Lelas and H. Lim and B. L{\"o}hr and R. Mankel and Melzer-Pellmann, {I. A.} and Nguyen, {C. N.} and D. Notz and Nuncio-Quiroz, {A. E.} and A. Polini and A. Raval and L. Rurua and U. Schneekloth and U. St{\"o}sslein and G. Wolf and C. Youngman and W. Zeuner and S. Schlenstedt and G. Barbagli and E. Gallo and C. Genta and Pelfer, {P. G.} and A. Bamberger and A. Benen and F. Karstens and D. Dobur and Vlasov, {N. N.} and M. Bell and Bussey, {P. J.} and Doyle, {A. T.} and J. Ferrando and J. Hamilton and S. Hanlon and Saxon, {D. H.} and Skillicorn, {I. O.} and I. Gialas and T. Carli and T. Gosau and U. Holm and N. Krumnack and E. Lohrmann and M. Milite and H. Salehi and P. Schleper and T. Sch{\"o}rner-Sadenius and S. Stonjek and K. Wichmann and K. Wick and A. Ziegler and A. Ziegler and C. Collins-Tooth and C. Foudas and R. Gon{\c c}alo and Long, {K. R.} and Tapper, {A. D.} and P. Cloth and D. Filges and M. Kataoka and K. Nagano and K. Tokushuku and S. Yamada and Y. Yamazaki and Barakbaev, {A. N.} and Boos, {E. G.} and Pokrovskiy, {N. S.} and Zhautykov, {B. O.} and D. Son and K. Piotrzkowski and F. Barreiro and C. Glasman and O. Gonz{\'a}lez and L. Labarga and {del Peso}, J. and E. Tassi and J. Terr{\'o}n and M. Zambrana and M. Barbi and F. Corriveau and S. Gliga and J. Lainesse and S. Padhi and Stairs, {D. G.} and R. Walsh and T. Tsurugai and A. Antonov and P. Danilov and Dolgoshein, {B. A.} and D. Gladkov and V. Sosnovtsev and S. Suchkov and Dementiev, {R. K.} and Ermolov, {P. F.} and Katkov, {I. I.} and Khein, {L. A.} and Korzhavina, {I. A.} and Kuzmin, {V. A.} and Levchenko, {B. B.} and Lukina, {O. Y.} and Proskuryakov, {A. S.} and Shcheglova, {L. M.} and Zotkin, {S. A.} and I. Abt and C. B{\"u}ttner and A. Caldwell and X. Liu and J. Sutiak and N. Coppola and S. Grijpink and E. Koffeman and P. Kooijman and E. Maddox and A. Pellegrino and S. Schagen and H. Tiecke and M. V{\'a}zquez and L. Wiggers and {de Wolf}, E. and N. Br{\"u}mmer and B. Bylsma and Durkin, {L. S.} and Ling, {T. Y.} and Cooper-Sarkar, {A. M.} and A. Cottrell and Devenish, {R. C.E.} and B. Foster and G. Grzelak and C. Gwenlan and T. Kohno and S. Patel and Straub, {P. B.} and R. Walczak and A. Bertolin and R. Brugnera and R. Carlin and {Dal Corso}, F. and S. Dusini and A. Garfagnini and S. Limentani and A. Longhin and A. Parenti and M. Posocco and L. Stanco and M. Turcato and Heaphy, {E. A.} and F. Metlica and Oh, {B. Y.} and Whitmore, {J. J.} and Y. Iga and G. D'Agostini and G. Marini and A. Nigro and C. Cormack and Hart, {J. C.} and McCubbin, {N. A.} and C. Heusch and Park, {I. H.} and H. Abramowicz and A. Gabareen and S. Kananov and A. Kreisel and A. Levy and M. Kuze and T. Fusayasu and S. Kagawa and T. Tawara and T. Yamashita and R. Hamatsu and T. Hirose and M. Inuzuka and H. Kaji and S. Kitamura and K. Matsuzawa and M. Costa and Ferrero, {M. I.} and V. Monaco and R. Sacchi and A. Solano and M. Arneodo and M. Ruspa and T. Koop and Martin, {J. F.} and A. Mirea and Butterworth, {J. M.} and R. Hall-Wilton and Jones, {T. W.} and Lightwood, {M. S.} and Sutton, {M. R.} and C. Targett-Adams and J. Ciborowski and R. Ciesielski and P. {\L}uzniak and Nowak, {R. J.} and Pawlak, {J. M.} and J. Sztuk and T. Tymieniecka and A. Ukleja and J. Ukleja and Zarnecki, {A. F.} and M. Adamus and P. Plucinski and Y. Eisenberg and D. Hochman and U. Karshon and M. Riveline and A. Everett and Gladilin, {L. K.} and D. K{\c c}ira and S. Lammers and L. Li and Reeder, {D. D.} and M. Rosin and P. Ryan and Savin, {A. A.} and Smith, {W. H.} and S. Dhawan and S. Bhadra and Catterall, {C. D.} and S. Fourletov and G. Hartner and S. Menary and M. Soares and J. Standage",

year = "2004",

month = jul,

day = "1",

doi = "10.1016/j.physletb.2004.04.024",

language = "English",

volume = "591",

pages = "7--22",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

Chekanov, S, Derrick, M, Loizides, JH, Magill, S, Miglioranzi, S, Musgrave, B, Repond, J, Yoshida, R, Mattingly, MCK, Pavel, N, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Cara Romeo, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, de Pasquale, S, Giusti, P, Iacobucci, G, Margotti, A, Montanari, A, Nania, R, Palmonari, F, Pesci, A, Rinaldi, L, Sartorelli, G, Zichichi, A, Aghuzumtsyan, G, Bartsch, D, Brock, I, Goers, S, Hartmann, H, Hilger, E, Irrgang, P, Jakob, HP, Kind, O, Meyer, U, Paul, E, Rautenberg, J, Renner, R, Stifutkin, A, Tandler, J, Voss, KC, Wang, M, Bailey, DS, Brook, NH, Cole, JE, Heath, GP, Namsoo, T, Robins, S, Wing, M, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Kim, JY, Lim, IT, Ma, KJ, Pac, MY, Helbich, M, Ning, Y, Ren, Z, Schmidke, WB, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Galas, A, Olkiewicz, K, Stopa, P, Zawiejski, L, Adamczyk, L, Bold, T, Grabowska-Bold, I, Kisielewska, D, Kowal, AM, Kowal, M, Łukasik, J, Przybycień, M, Suszycki, L, Szuba, D, Szuba, J, Kotański, A, Slomiński, W, Adler, V, Behrens, U, Bloch, I, Borras, K, Chiochia, V, Dannheim, D, Drews, G, Fourletova, J, Fricke, U, Geiser, A, Göttlicher, P, Gutsche, O, Haas, T, Hain, W, Hillert, S, Horn, C, Kahle, B, Kötz, U, Kowalski, H, Kramberger, G, Labes, H, Lelas, D, Lim, H, Löhr, B, Mankel, R, Melzer-Pellmann, IA, Nguyen, CN, Notz, D, Nuncio-Quiroz, AE, Polini, A, Raval, A, Rurua, L, Schneekloth, U, Stösslein, U, Wolf, G, Youngman, C, Zeuner, W, Schlenstedt, S, Barbagli, G, Gallo, E, Genta, C, Pelfer, PG, Bamberger, A, Benen, A, Karstens, F, Dobur, D, Vlasov, NN, Bell, M, Bussey, PJ, Doyle, AT, Ferrando, J, Hamilton, J, Hanlon, S, Saxon, DH, Skillicorn, IO, Gialas, I, Carli, T, Gosau, T, Holm, U, Krumnack, N, Lohrmann, E, Milite, M, Salehi, H, Schleper, P, Schörner-Sadenius, T, Stonjek, S, Wichmann, K, Wick, K, Ziegler, A, Ziegler, A, Collins-Tooth, C, Foudas, C, Gonçalo, R, Long, KR, Tapper, AD, Cloth, P, Filges, D, Kataoka, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Barakbaev, AN, Boos, EG, Pokrovskiy, NS, Zhautykov, BO, Son, D, Piotrzkowski, K, Barreiro, F, Glasman, C, González, O, Labarga, L, del Peso, J, Tassi, E, Terrón, J, Zambrana, M, Barbi, M, Corriveau, F, Gliga, S, Lainesse, J, Padhi, S, Stairs, DG, Walsh, R, Tsurugai, T, Antonov, A, Danilov, P, Dolgoshein, BA, Gladkov, D, Sosnovtsev, V, Suchkov, S, Dementiev, RK, Ermolov, PF, Katkov, II, Khein, LA, Korzhavina, IA, Kuzmin, VA, Levchenko, BB, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Zotkin, SA, Abt, I, Büttner, C, Caldwell, A, Liu, X, Sutiak, J, Coppola, N, Grijpink, S, Koffeman, E, Kooijman, P, Maddox, E, Pellegrino, A, Schagen, S, Tiecke, H, Vázquez, M, Wiggers, L, de Wolf, E, Brümmer, N, Bylsma, B, Durkin, LS, Ling, TY, Cooper-Sarkar, AM, Cottrell, A, Devenish, RCE, Foster, B, Grzelak, G, Gwenlan, C, Kohno, T, Patel, S, Straub, PB, Walczak, R, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dusini, S, Garfagnini, A, Limentani, S, Longhin, A, Parenti, A, Posocco, M, Stanco, L, Turcato, M, Heaphy, EA, Metlica, F, Oh, BY, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, JC, McCubbin, NA, Heusch, C, Park, IH, Abramowicz, H, Gabareen, A, Kananov, S, Kreisel, A, Levy, A, Kuze, M, Fusayasu, T, Kagawa, S, Tawara, T, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kaji, H, Kitamura, S, Matsuzawa, K, Costa, M, Ferrero, MI, Monaco, V, Sacchi, R, Solano, A, Arneodo, M , Ruspa, M, Koop, T, Martin, JF, Mirea, A, Butterworth, JM, Hall-Wilton, R, Jones, TW, Lightwood, MS, Sutton, MR, Targett-Adams, C, Ciborowski, J, Ciesielski, R, Łuzniak, P, Nowak, RJ, Pawlak, JM, Sztuk, J, Tymieniecka, T, Ukleja, A, Ukleja, J, Zarnecki, AF, Adamus, M, Plucinski, P, Eisenberg, Y, Hochman, D, Karshon, U, Riveline, M, Everett, A, Gladilin, LK, Kçira, D, Lammers, S, Li, L, Reeder, DD, Rosin, M, Ryan, P, Savin, AA, Smith, WH, Dhawan, S, Bhadra, S, Catterall, CD, Fourletov, S, Hartner, G, Menary, S, Soares, M & Standage, J 2004, 'Evidence for a narrow baryonic state decaying to K_S⁰p and K_S⁰p̄ in deep inelastic scattering at HERA', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 591, n. 1-2, pagg. 7-22. https://doi.org/10.1016/j.physletb.2004.04.024

TY - JOUR

T1 - Evidence for a narrow baryonic state decaying to KS0p and KS0p̄ in deep inelastic scattering at HERA

AU - Chekanov, S.

AU - Derrick, M.

AU - Loizides, J. H.

AU - Magill, S.

AU - Miglioranzi, S.

AU - Musgrave, B.

AU - Repond, J.

AU - Yoshida, R.

AU - Mattingly, M. C.K.

AU - Pavel, N.

AU - Antonioli, P.

AU - Bari, G.

AU - Basile, M.

AU - Bellagamba, L.

AU - Boscherini, D.

AU - Bruni, A.

AU - Bruni, G.

AU - Cara Romeo, G.

AU - Cifarelli, L.

AU - Cindolo, F.

AU - Contin, A.

AU - Corradi, M.

AU - de Pasquale, S.

AU - Giusti, P.

AU - Iacobucci, G.

AU - Margotti, A.

AU - Montanari, A.

AU - Nania, R.

AU - Palmonari, F.

AU - Pesci, A.

AU - Rinaldi, L.

AU - Sartorelli, G.

AU - Zichichi, A.

AU - Aghuzumtsyan, G.

AU - Bartsch, D.

AU - Brock, I.

AU - Goers, S.

AU - Hartmann, H.

AU - Hilger, E.

AU - Irrgang, P.

AU - Jakob, H. P.

AU - Kind, O.

AU - Meyer, U.

AU - Paul, E.

AU - Rautenberg, J.

AU - Renner, R.

AU - Stifutkin, A.

AU - Tandler, J.

AU - Voss, K. C.

AU - Wang, M.

AU - Bailey, D. S.

AU - Brook, N. H.

AU - Cole, J. E.

AU - Heath, G. P.

AU - Namsoo, T.

AU - Robins, S.

AU - Wing, M.

AU - Capua, M.

AU - Mastroberardino, A.

AU - Schioppa, M.

AU - Susinno, G.

AU - Kim, J. Y.

AU - Lim, I. T.

AU - Ma, K. J.

AU - Pac, M. Y.

AU - Helbich, M.

AU - Ning, Y.

AU - Ren, Z.

AU - Schmidke, W. B.

AU - Sciulli, F.

AU - Chwastowski, J.

AU - Eskreys, A.

AU - Figiel, J.

AU - Galas, A.

AU - Olkiewicz, K.

AU - Stopa, P.

AU - Zawiejski, L.

AU - Adamczyk, L.

AU - Bold, T.

AU - Grabowska-Bold, I.

AU - Kisielewska, D.

AU - Kowal, A. M.

AU - Kowal, M.

AU - Łukasik, J.

AU - Przybycień, M.

AU - Suszycki, L.

AU - Szuba, D.

AU - Szuba, J.

AU - Kotański, A.

AU - Slomiński, W.

AU - Adler, V.

AU - Behrens, U.

AU - Bloch, I.

AU - Borras, K.

AU - Chiochia, V.

AU - Dannheim, D.

AU - Drews, G.

AU - Fourletova, J.

AU - Fricke, U.

AU - Geiser, A.

AU - Göttlicher, P.

AU - Gutsche, O.

AU - Haas, T.

AU - Hain, W.

AU - Hillert, S.

AU - Horn, C.

AU - Kahle, B.

AU - Kötz, U.

AU - Kowalski, H.

AU - Kramberger, G.

AU - Labes, H.

AU - Lelas, D.

AU - Lim, H.

AU - Löhr, B.

AU - Mankel, R.

AU - Melzer-Pellmann, I. A.

AU - Nguyen, C. N.

AU - Notz, D.

AU - Nuncio-Quiroz, A. E.

AU - Polini, A.

AU - Raval, A.

AU - Rurua, L.

AU - Schneekloth, U.

AU - Stösslein, U.

AU - Wolf, G.

AU - Youngman, C.

AU - Zeuner, W.

AU - Schlenstedt, S.

AU - Barbagli, G.

AU - Gallo, E.

AU - Genta, C.

AU - Pelfer, P. G.

AU - Bamberger, A.

AU - Benen, A.

AU - Karstens, F.

AU - Dobur, D.

AU - Vlasov, N. N.

AU - Bell, M.

AU - Bussey, P. J.

AU - Doyle, A. T.

AU - Ferrando, J.

AU - Hamilton, J.

AU - Hanlon, S.

AU - Saxon, D. H.

AU - Skillicorn, I. O.

AU - Gialas, I.

AU - Carli, T.

AU - Gosau, T.

AU - Holm, U.

AU - Krumnack, N.

AU - Lohrmann, E.

AU - Milite, M.

AU - Salehi, H.

AU - Schleper, P.

AU - Schörner-Sadenius, T.

AU - Stonjek, S.

AU - Wichmann, K.

AU - Wick, K.

AU - Ziegler, A.

AU - Collins-Tooth, C.

AU - Foudas, C.

AU - Gonçalo, R.

AU - Long, K. R.

AU - Tapper, A. D.

AU - Cloth, P.

AU - Filges, D.

AU - Kataoka, M.

AU - Nagano, K.

AU - Tokushuku, K.

AU - Yamada, S.

AU - Yamazaki, Y.

AU - Barakbaev, A. N.

AU - Boos, E. G.

AU - Pokrovskiy, N. S.

AU - Zhautykov, B. O.

AU - Son, D.

AU - Piotrzkowski, K.

AU - Barreiro, F.

AU - Glasman, C.

AU - González, O.

AU - Labarga, L.

AU - del Peso, J.

AU - Tassi, E.

AU - Terrón, J.

AU - Zambrana, M.

AU - Barbi, M.

AU - Corriveau, F.

AU - Gliga, S.

AU - Lainesse, J.

AU - Padhi, S.

AU - Stairs, D. G.

AU - Walsh, R.

AU - Tsurugai, T.

AU - Antonov, A.

AU - Danilov, P.

AU - Dolgoshein, B. A.

AU - Gladkov, D.

AU - Sosnovtsev, V.

AU - Suchkov, S.

AU - Dementiev, R. K.

AU - Ermolov, P. F.

AU - Katkov, I. I.

AU - Khein, L. A.

AU - Korzhavina, I. A.

AU - Kuzmin, V. A.

AU - Levchenko, B. B.

AU - Lukina, O. Y.

AU - Proskuryakov, A. S.

AU - Shcheglova, L. M.

AU - Zotkin, S. A.

AU - Abt, I.

AU - Büttner, C.

AU - Caldwell, A.

AU - Liu, X.

AU - Sutiak, J.

AU - Coppola, N.

AU - Grijpink, S.

AU - Koffeman, E.

AU - Kooijman, P.

AU - Maddox, E.

AU - Pellegrino, A.

AU - Schagen, S.

AU - Tiecke, H.

AU - Vázquez, M.

AU - Wiggers, L.

AU - de Wolf, E.

AU - Brümmer, N.

AU - Bylsma, B.

AU - Durkin, L. S.

AU - Ling, T. Y.

AU - Cooper-Sarkar, A. M.

AU - Cottrell, A.

AU - Devenish, R. C.E.

AU - Foster, B.

AU - Grzelak, G.

AU - Gwenlan, C.

AU - Kohno, T.

AU - Patel, S.

AU - Straub, P. B.

AU - Walczak, R.

AU - Bertolin, A.

AU - Brugnera, R.

AU - Carlin, R.

AU - Dal Corso, F.

AU - Dusini, S.

AU - Garfagnini, A.

AU - Limentani, S.

AU - Longhin, A.

AU - Parenti, A.

AU - Posocco, M.

AU - Stanco, L.

AU - Turcato, M.

AU - Heaphy, E. A.

AU - Metlica, F.

AU - Oh, B. Y.

AU - Whitmore, J. J.

AU - Iga, Y.

AU - D'Agostini, G.

AU - Marini, G.

AU - Nigro, A.

AU - Cormack, C.

AU - Hart, J. C.

AU - McCubbin, N. A.

AU - Heusch, C.

AU - Park, I. H.

AU - Abramowicz, H.

AU - Gabareen, A.

AU - Kananov, S.

AU - Kreisel, A.

AU - Levy, A.

AU - Kuze, M.

AU - Fusayasu, T.

AU - Kagawa, S.

AU - Tawara, T.

AU - Yamashita, T.

AU - Hamatsu, R.

AU - Hirose, T.

AU - Inuzuka, M.

AU - Kaji, H.

AU - Kitamura, S.

AU - Matsuzawa, K.

AU - Costa, M.

AU - Ferrero, M. I.

AU - Monaco, V.

AU - Sacchi, R.

AU - Solano, A.

AU - Arneodo, M.

AU - Ruspa, M.

AU - Koop, T.

AU - Martin, J. F.

AU - Mirea, A.

AU - Butterworth, J. M.

AU - Hall-Wilton, R.

AU - Jones, T. W.

AU - Lightwood, M. S.

AU - Sutton, M. R.

AU - Targett-Adams, C.

AU - Ciborowski, J.

AU - Ciesielski, R.

AU - Łuzniak, P.

AU - Nowak, R. J.

AU - Pawlak, J. M.

AU - Sztuk, J.

AU - Tymieniecka, T.

AU - Ukleja, A.

AU - Ukleja, J.

AU - Zarnecki, A. F.

AU - Adamus, M.

AU - Plucinski, P.

AU - Eisenberg, Y.

AU - Hochman, D.

AU - Karshon, U.

AU - Riveline, M.

AU - Everett, A.

AU - Gladilin, L. K.

AU - Kçira, D.

AU - Lammers, S.

AU - Li, L.

AU - Reeder, D. D.

AU - Rosin, M.

AU - Ryan, P.

AU - Savin, A. A.

AU - Smith, W. H.

AU - Dhawan, S.

AU - Bhadra, S.

AU - Catterall, C. D.

AU - Fourletov, S.

AU - Hartner, G.

AU - Menary, S.

AU - Soares, M.

AU - Standage, J.

PY - 2004/7/1

Y1 - 2004/7/1

N2 - A resonance search has been made in the K0Sp and K0Sp̄ invariant-mass spectrum measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb-1. The search was performed in the central rapidity region of inclusive deep inelastic scattering at an ep centre-of-mass energy of 300-318 GeV for exchanged photon virtuality, Q2, above 1 GeV2. Recent results from fixed-target experiments give evidence for a narrow baryon resonance decaying to K+n and K0Sp, interpreted as a pentaquark. The results presented here support the existence of such state, with a mass of 1521.5±1.5(stat.)+2.8-1.7(syst.) MeV and a Gaussian width consistent with the experimental resolution of 2 MeV. The signal is visible at high Q2 and, for Q2>20 GeV2, contains 221±48 events. The probability of a similar signal anywhere in the range 1500-1560 MeV arising from fluctuations of the background is below 6×10-5.

AB - A resonance search has been made in the K0Sp and K0Sp̄ invariant-mass spectrum measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb-1. The search was performed in the central rapidity region of inclusive deep inelastic scattering at an ep centre-of-mass energy of 300-318 GeV for exchanged photon virtuality, Q2, above 1 GeV2. Recent results from fixed-target experiments give evidence for a narrow baryon resonance decaying to K+n and K0Sp, interpreted as a pentaquark. The results presented here support the existence of such state, with a mass of 1521.5±1.5(stat.)+2.8-1.7(syst.) MeV and a Gaussian width consistent with the experimental resolution of 2 MeV. The signal is visible at high Q2 and, for Q2>20 GeV2, contains 221±48 events. The probability of a similar signal anywhere in the range 1500-1560 MeV arising from fluctuations of the background is below 6×10-5.

UR - http://www.scopus.com/inward/record.url?scp=2942516221&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2004.04.024

DO - 10.1016/j.physletb.2004.04.024

M3 - Article

SN - 0370-2693

VL - 591

SP - 7

EP - 22

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