Spin and parity measurement of the Λ (1405) baryon

K. Moriya; R. A. Schumacher; M. Aghasyan; M. J. Amaryan; M. D. Anderson; S. Anefalos Pereira; J. Ball; N. A. Baltzell; M. Battaglieri; M. Bellis; A. S. Biselli; J. Bono; S. Boiarinov; W. J. Briscoe; W. K. Brooks; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; P. L. Cole; P. Collins; M. Contalbrigo; O. Cortes; V. Crede; A. D'Angelo; N. Dashyan; R. De Vita; E. De Sanctis; B. Dey; C. Djalali; Michael Dugger; R. Dupré; H. Egiyan; A. El Alaoui; L. El Fassi; L. Elouadrhiri; P. Eugenio; G. Fedotov; S. Fegan; J. A. Fleming; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; W. Gohn; E. Golovatch; R. W. Gothe; M. Guidal; K. A. Griffioen; K. Hafidi; H. Hakobyan; K. Hicks; M. Holtrop; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; H. S. Jo; K. Joo; D. Keller; M. Khandaker; W. Kim; S. Koirala; V. Kubarovsky; S. V. Kuleshov; P. Lenisa; H. Y. Lu; I. J D Macgregor; N. Markov; M. McCracken; B. McKinnon; M. D. Mestayer; C. A. Meyer; M. Mirazita; V. Mokeev; R. A. Montgomery; H. Moutarde; E. Munevar; P. Nadel-Turonski; S. Niccolai; I. Niculescu; M. Osipenko; L. L. Pappalardo; E. Pasyuk; P. Peng; J. J. Phillips; S. Pisano; O. Pogorelko; S. Pozdniakov; J. W. Price; S. Procureur; A. J R Puckett; B. A. Raue; D. Rimal; M. Ripani; Barry Ritchie; A. Rizzo; G. Rosner; P. Roy; F. Sabatié; C. Salgado; D. Schott; E. Seder; I. Senderovich; E. S. Smith; D. Sokhan; G. D. Smith; S. Stepanyan; S. Strauch; W. Tang; H. Voskanyan; E. Voutier; N. K. Walford; D. P. Watts; L. B. Weinstein; M. Williams; M. H. Wood; N. Zachariou; L. Zana; J. Zhang; V. Ziegler; Z. W. Zhao; I. Zonta

doi:10.1103/PhysRevLett.112.082004

Spin and parity measurement of the Λ (1405) baryon

K. Moriya, R. A. Schumacher, M. Aghasyan, M. J. Amaryan, M. D. Anderson, S. Anefalos Pereira, J. Ball, N. A. Baltzell, M. Battaglieri, M. Bellis, A. S. Biselli, J. Bono, S. Boiarinov, W. J. Briscoe, W. K. Brooks, V. D. Burkert, D. S. Carman, A. Celentano, S. Chandavar, G. CharlesP. L. Cole, P. Collins, M. Contalbrigo, O. Cortes, V. Crede, A. D'Angelo, N. Dashyan, R. De Vita, E. De Sanctis, B. Dey, C. Djalali, Michael Dugger, R. Dupré, H. Egiyan, A. El Alaoui, L. El Fassi, L. Elouadrhiri, P. Eugenio, G. Fedotov, S. Fegan, J. A. Fleming, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, W. Gohn, E. Golovatch, R. W. Gothe, M. Guidal, K. A. Griffioen, K. Hafidi, H. Hakobyan, K. Hicks, M. Holtrop, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, H. S. Jo, K. Joo, D. Keller, M. Khandaker, W. Kim, S. Koirala, V. Kubarovsky, S. V. Kuleshov, P. Lenisa, H. Y. Lu, I. J D Macgregor, N. Markov, M. McCracken, B. McKinnon, M. D. Mestayer, C. A. Meyer, M. Mirazita, V. Mokeev, R. A. Montgomery, H. Moutarde, E. Munevar, P. Nadel-Turonski, S. Niccolai, I. Niculescu, M. Osipenko, L. L. Pappalardo, E. Pasyuk, P. Peng, J. J. Phillips, S. Pisano, O. Pogorelko, S. Pozdniakov, J. W. Price, S. Procureur, A. J R Puckett, B. A. Raue, D. Rimal, M. Ripani, Barry Ritchie, A. Rizzo, G. Rosner, P. Roy, F. Sabatié, C. Salgado, D. Schott, E. Seder, I. Senderovich, E. S. Smith, D. Sokhan, G. D. Smith, S. Stepanyan, S. Strauch, W. Tang, H. Voskanyan, E. Voutier, N. K. Walford, D. P. Watts, L. B. Weinstein, M. Williams, M. H. Wood, N. Zachariou, L. Zana, J. Zhang, V. Ziegler, Z. W. Zhao, I. Zonta

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Abstract

A determination of the spin and parity of the Λ(1405) is presented using photoproduction data from the CLAS detector at Jefferson Lab. The reaction γ+p→K++Λ(1405) is analyzed in the decay channel Λ(1405)→Σ++π-, where the decay distribution to Σ+π- and the variation of the Σ+ polarization with respect to the Λ(1405) polarization direction determines the parity. The Λ(1405) is produced, in the energy range 2.55<W<2.85 GeV and for 0.6<cosθK+c.m.<0.9, with polarization P=0.45±0.02(stat) ±0.07(syst). The analysis shows that the decays are in S wave, with the Σ+ polarized such that the Λ(1405) has spin-parity JP=12-, as expected by most theories.

Original language	English (US)
Article number	082004
Journal	Physical Review Letters
Volume	112
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.112.082004
State	Published - Feb 28 2014

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.112.082004

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Moriya, K., Schumacher, R. A., Aghasyan, M., Amaryan, M. J., Anderson, M. D., Anefalos Pereira, S., Ball, J., Baltzell, N. A., Battaglieri, M., Bellis, M., Biselli, A. S., Bono, J., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Carman, D. S., Celentano, A., Chandavar, S., ... Zonta, I. (2014). Spin and parity measurement of the Λ (1405) baryon. Physical Review Letters, 112(8), Article 082004. https://doi.org/10.1103/PhysRevLett.112.082004

Moriya, K, Schumacher, RA, Aghasyan, M, Amaryan, MJ, Anderson, MD, Anefalos Pereira, S, Ball, J, Baltzell, NA, Battaglieri, M, Bellis, M, Biselli, AS, Bono, J, Boiarinov, S, Briscoe, WJ, Brooks, WK, Burkert, VD, Carman, DS, Celentano, A, Chandavar, S, Charles, G, Cole, PL, Collins, P, Contalbrigo, M, Cortes, O, Crede, V, D'Angelo, A, Dashyan, N, De Vita, R, De Sanctis, E, Dey, B, Djalali, C, Dugger, M, Dupré, R, Egiyan, H, El Alaoui, A, El Fassi, L, Elouadrhiri, L, Eugenio, P, Fedotov, G, Fegan, S, Fleming, JA, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Gohn, W, Golovatch, E, Gothe, RW, Guidal, M, Griffioen, KA, Hafidi, K, Hakobyan, H, Hicks, K, Holtrop, M, Ilieva, Y, Ireland, DG, Ishkhanov, BS, Isupov, EL, Jo, HS, Joo, K, Keller, D, Khandaker, M, Kim, W, Koirala, S, Kubarovsky, V, Kuleshov, SV, Lenisa, P, Lu, HY, Macgregor, IJD, Markov, N, McCracken, M, McKinnon, B, Mestayer, MD, Meyer, CA, Mirazita, M, Mokeev, V, Montgomery, RA, Moutarde, H, Munevar, E, Nadel-Turonski, P, Niccolai, S, Niculescu, I, Osipenko, M, Pappalardo, LL, Pasyuk, E, Peng, P, Phillips, JJ, Pisano, S, Pogorelko, O, Pozdniakov, S, Price, JW, Procureur, S, Puckett, AJR, Raue, BA, Rimal, D, Ripani, M, Ritchie, B, Rizzo, A, Rosner, G, Roy, P, Sabatié, F, Salgado, C, Schott, D, Seder, E, Senderovich, I, Smith, ES, Sokhan, D, Smith, GD, Stepanyan, S, Strauch, S, Tang, W, Voskanyan, H, Voutier, E, Walford, NK, Watts, DP, Weinstein, LB, Williams, M, Wood, MH, Zachariou, N, Zana, L, Zhang, J, Ziegler, V, Zhao, ZW & Zonta, I 2014, 'Spin and parity measurement of the Λ (1405) baryon', Physical Review Letters, vol. 112, no. 8, 082004. https://doi.org/10.1103/PhysRevLett.112.082004

@article{23abe7dd6dde424bad0ecad7a2688568,

title = "Spin and parity measurement of the Λ (1405) baryon",

abstract = "A determination of the spin and parity of the Λ(1405) is presented using photoproduction data from the CLAS detector at Jefferson Lab. The reaction γ+p→K++Λ(1405) is analyzed in the decay channel Λ(1405)→Σ++π-, where the decay distribution to Σ+π- and the variation of the Σ+ polarization with respect to the Λ(1405) polarization direction determines the parity. The Λ(1405) is produced, in the energy range 2.55<W<2.85 GeV and for 0.6",

author = "K. Moriya and Schumacher, {R. A.} and M. Aghasyan and Amaryan, {M. J.} and Anderson, {M. D.} and {Anefalos Pereira}, S. and J. Ball and Baltzell, {N. A.} and M. Battaglieri and M. Bellis and Biselli, {A. S.} and J. Bono and S. Boiarinov and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and Carman, {D. S.} and A. Celentano and S. Chandavar and G. Charles and Cole, {P. L.} and P. Collins and M. Contalbrigo and O. Cortes and V. Crede and A. D'Angelo and N. Dashyan and {De Vita}, R. and {De Sanctis}, E. and B. Dey and C. Djalali and Michael Dugger and R. Dupr{\'e} and H. Egiyan and {El Alaoui}, A. and {El Fassi}, L. and L. Elouadrhiri and P. Eugenio and G. Fedotov and S. Fegan and Fleming, {J. A.} and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and W. Gohn and E. Golovatch and Gothe, {R. W.} and M. Guidal and Griffioen, {K. A.} and K. Hafidi and H. Hakobyan and K. Hicks and M. Holtrop and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and Isupov, {E. L.} and Jo, {H. S.} and K. Joo and D. Keller and M. Khandaker and W. Kim and S. Koirala and V. Kubarovsky and Kuleshov, {S. V.} and P. Lenisa and Lu, {H. Y.} and Macgregor, {I. J D} and N. Markov and M. McCracken and B. McKinnon and Mestayer, {M. D.} and Meyer, {C. A.} and M. Mirazita and V. Mokeev and Montgomery, {R. A.} and H. Moutarde and E. Munevar and P. Nadel-Turonski and S. Niccolai and I. Niculescu and M. Osipenko and Pappalardo, {L. L.} and E. Pasyuk and P. Peng and Phillips, {J. J.} and S. Pisano and O. Pogorelko and S. Pozdniakov and Price, {J. W.} and S. Procureur and Puckett, {A. J R} and Raue, {B. A.} and D. Rimal and M. Ripani and Barry Ritchie and A. Rizzo and G. Rosner and P. Roy and F. Sabati{\'e} and C. Salgado and D. Schott and E. Seder and I. Senderovich and Smith, {E. S.} and D. Sokhan and Smith, {G. D.} and S. Stepanyan and S. Strauch and W. Tang and H. Voskanyan and E. Voutier and Walford, {N. K.} and Watts, {D. P.} and Weinstein, {L. B.} and M. Williams and Wood, {M. H.} and N. Zachariou and L. Zana and J. Zhang and V. Ziegler and Zhao, {Z. W.} and I. Zonta",

year = "2014",

month = feb,

day = "28",

doi = "10.1103/PhysRevLett.112.082004",

language = "English (US)",

volume = "112",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "8",

}

TY - JOUR

T1 - Spin and parity measurement of the Λ (1405) baryon

AU - Moriya, K.

AU - Schumacher, R. A.

AU - Aghasyan, M.

AU - Amaryan, M. J.

AU - Anderson, M. D.

AU - Anefalos Pereira, S.

AU - Ball, J.

AU - Baltzell, N. A.

AU - Battaglieri, M.

AU - Bellis, M.

AU - Biselli, A. S.

AU - Bono, J.

AU - Boiarinov, S.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Burkert, V. D.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Charles, G.

AU - Cole, P. L.

AU - Collins, P.

AU - Contalbrigo, M.

AU - Cortes, O.

AU - Crede, V.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Dey, B.

AU - Djalali, C.

AU - Dugger, Michael

AU - Dupré, R.

AU - Egiyan, H.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Elouadrhiri, L.

AU - Eugenio, P.

AU - Fedotov, G.

AU - Fegan, S.

AU - Fleming, J. A.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Gohn, W.

AU - Golovatch, E.

AU - Gothe, R. W.

AU - Guidal, M.

AU - Griffioen, K. A.

AU - Hafidi, K.

AU - Hakobyan, H.

AU - Hicks, K.

AU - Holtrop, M.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Isupov, E. L.

AU - Jo, H. S.

AU - Joo, K.

AU - Keller, D.

AU - Khandaker, M.

AU - Kim, W.

AU - Koirala, S.

AU - Kubarovsky, V.

AU - Kuleshov, S. V.

AU - Lenisa, P.

AU - Lu, H. Y.

AU - Macgregor, I. J D

AU - Markov, N.

AU - McCracken, M.

AU - McKinnon, B.

AU - Mestayer, M. D.

AU - Meyer, C. A.

AU - Mirazita, M.

AU - Mokeev, V.

AU - Montgomery, R. A.

AU - Moutarde, H.

AU - Munevar, E.

AU - Nadel-Turonski, P.

AU - Niccolai, S.

AU - Niculescu, I.

AU - Osipenko, M.

AU - Pappalardo, L. L.

AU - Pasyuk, E.

AU - Peng, P.

AU - Phillips, J. J.

AU - Pisano, S.

AU - Pogorelko, O.

AU - Pozdniakov, S.

AU - Price, J. W.

AU - Procureur, S.

AU - Puckett, A. J R

AU - Raue, B. A.

AU - Rimal, D.

AU - Ripani, M.

AU - Ritchie, Barry

AU - Rizzo, A.

AU - Rosner, G.

AU - Roy, P.

AU - Sabatié, F.

AU - Salgado, C.

AU - Schott, D.

AU - Seder, E.

AU - Senderovich, I.

AU - Smith, E. S.

AU - Sokhan, D.

AU - Smith, G. D.

AU - Stepanyan, S.

AU - Strauch, S.

AU - Tang, W.

AU - Voskanyan, H.

AU - Voutier, E.

AU - Walford, N. K.

AU - Watts, D. P.

AU - Weinstein, L. B.

AU - Williams, M.

AU - Wood, M. H.

AU - Zachariou, N.

AU - Zana, L.

AU - Zhang, J.

AU - Ziegler, V.

AU - Zhao, Z. W.

AU - Zonta, I.

PY - 2014/2/28

Y1 - 2014/2/28

N2 - A determination of the spin and parity of the Λ(1405) is presented using photoproduction data from the CLAS detector at Jefferson Lab. The reaction γ+p→K++Λ(1405) is analyzed in the decay channel Λ(1405)→Σ++π-, where the decay distribution to Σ+π- and the variation of the Σ+ polarization with respect to the Λ(1405) polarization direction determines the parity. The Λ(1405) is produced, in the energy range 2.55<W<2.85 GeV and for 0.6

AB - A determination of the spin and parity of the Λ(1405) is presented using photoproduction data from the CLAS detector at Jefferson Lab. The reaction γ+p→K++Λ(1405) is analyzed in the decay channel Λ(1405)→Σ++π-, where the decay distribution to Σ+π- and the variation of the Σ+ polarization with respect to the Λ(1405) polarization direction determines the parity. The Λ(1405) is produced, in the energy range 2.55<W<2.85 GeV and for 0.6

UR - http://www.scopus.com/inward/record.url?scp=84897715125&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84897715125&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.112.082004

DO - 10.1103/PhysRevLett.112.082004

M3 - Article

AN - SCOPUS:84897715125

SN - 0031-9007

VL - 112

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

M1 - 082004

ER -

Spin and parity measurement of the Λ (1405) baryon

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