Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

G. Agakishiev; A. Balanda; D. Belver; A. Belyaev; J. C. Berger-Chen; A. Blanco; M. Böhmer; J. L. Boyard; P. Cabanelas; S. Chernenko; A. Dybczak; E. Epple; L. Fabbietti; O. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Fröhlich; T. Galatyuk; J. A. Garźon; R. Gernhäuser; K. Göbel; M. Golubeva; D. Gonźalez-D́iaz; F. Guber; M. Gumberidze; T. Heinz; T. Hennino; R. Holzmann; A. Ierusalimov; I. Iori; A. Ivashkin; M. Jurkovic; B. Kämpfer; T. Karavicheva; I. Koenig; W. Koenig; B. W. Kolb; G. Kornakov; R. Kotte; A. Krása; F. Krizek; R. Krücken; H. Kuc; W. Kühn; A. Kugler; A. Kurepin; V. Ladygin; R. Lalik; S. Lang; K. Lapidus; A. Lebedev; T. Liu; L. Lopes; M. Lorenz; L. Maier; A. Mangiarott; J. Markert; V. Metag; B. Michalska; J. Miche; C. M̈untz; L. Naumann; Y. C. Pachmayer; M. Palka; Y. Parpottas; V. Pechenov; O. Pechenova; J. Pietraszko; W. Przygoda; B. Ramstein; A. Reshetin; A. Rustamov; A. Sadovsky; P. Salabura; A. Schmah; E. Schwab; J. Siebenson; Yu G. Sobolev; S. Spataroh; B. Spruck; H. Str̈obele; J. Stroth; C. Sturm; A. Tarantola; K. Teilab; P. Tlusty; M. Traxler; R. Trebacz; H. Tsertos; T. Vasiliev; V. Wagner; M. Weber; C. Wendisch; J. Ẅustenfeld; S. Yurevich; Y. Zanevsky

doi:10.1140/epja/i2014-14082-1

Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

G. Agakishiev, A. Balanda, D. Belver, A. Belyaev, J. C. Berger-Chen, A. Blanco, M. Böhmer, J. L. Boyard, P. Cabanelas, S. Chernenko, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Finocchiaro, P. Fonte, J. Friese, I. Fröhlich, T. Galatyuk, J. A. GarźonR. Gernhäuser, K. Göbel, M. Golubeva, D. Gonźalez-D́iaz, F. Guber, M. Gumberidze, T. Heinz, T. Hennino, R. Holzmann, A. Ierusalimov, I. Iori, A. Ivashkin, M. Jurkovic, B. Kämpfer, T. Karavicheva, I. Koenig, W. Koenig, B. W. Kolb, G. Kornakov, R. Kotte, A. Krása, F. Krizek, R. Krücken, H. Kuc, W. Kühn, A. Kugler, A. Kurepin, V. Ladygin, R. Lalik, S. Lang, K. Lapidus, A. Lebedev, T. Liu, L. Lopes, M. Lorenz, L. Maier, A. Mangiarott, J. Markert, V. Metag, B. Michalska, J. Miche, C. M̈untz, L. Naumann, Y. C. Pachmayer, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, J. Pietraszko, W. Przygoda, B. Ramstein, A. Reshetin, A. Rustamov, A. Sadovsky, P. Salabura, A. Schmah, E. Schwab, J. Siebenson, Yu G. Sobolev, S. Spataroh, B. Spruck, H. Str̈obele, J. Stroth, C. Sturm, A. Tarantola, K. Teilab, P. Tlusty, M. Traxler, R. Trebacz, H. Tsertos, T. Vasiliev, V. Wagner, M. Weber, C. Wendisch, J. Ẅustenfeld, S. Yurevich, Y. Zanevsky

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Abstract

We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of 3.5 GeV based on data measured with HADES. The exclusive channels pp → npπ⁺ and pp → ppπ⁰ as well as pp → ppe⁺e^- are studied simultaneously for the first time. The invariant masses and angular distributions of the pion-nucleon systems were studied and compared to simulations based on a resonance model ansatz assuming saturation of the pion production by an incoherent sum of baryonic resonances (R) with masses < 2 GeV/c². A very good description of the one-pion production is achieved allowing for an estimate of individual baryon resonance production cross sections which are used as input to calculate the dielectron yields from R → pe⁺e^- decays. Two models of the resonance decays into dielectrons are examined assuming a point-like RNγ* coupling and the dominance of the ρ meson. The results of model calculations are compared to data from the exclusive ppe⁺e^- channel by means of the dielectron and pe⁺e^- invariant mass distributions.

Original language	English
Article number	82
Pages (from-to)	1-16
Number of pages	16
Journal	European Physical Journal A
Volume	50
Issue number	5
DOIs	https://doi.org/10.1140/epja/i2014-14082-1
State	Published - 2014
Externally published	Yes

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Agakishiev, G., Balanda, A., Belver, D., Belyaev, A., Berger-Chen, J. C., Blanco, A., Böhmer, M., Boyard, J. L., Cabanelas, P., Chernenko, S., Dybczak, A., Epple, E., Fabbietti, L., Fateev, O., Finocchiaro, P., Fonte, P., Friese, J., Fröhlich, I., Galatyuk, T., ... Zanevsky, Y. (2014). Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV. European Physical Journal A, 50(5), 1-16. Article 82. https://doi.org/10.1140/epja/i2014-14082-1

@article{10b495b1ac294619b10333492c79d64a,

title = "Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV",

abstract = "We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of 3.5 GeV based on data measured with HADES. The exclusive channels pp → npπ+ and pp → ppπ0 as well as pp → ppe+e- are studied simultaneously for the first time. The invariant masses and angular distributions of the pion-nucleon systems were studied and compared to simulations based on a resonance model ansatz assuming saturation of the pion production by an incoherent sum of baryonic resonances (R) with masses < 2 GeV/c2. A very good description of the one-pion production is achieved allowing for an estimate of individual baryon resonance production cross sections which are used as input to calculate the dielectron yields from R → pe+e- decays. Two models of the resonance decays into dielectrons are examined assuming a point-like RNγ* coupling and the dominance of the ρ meson. The results of model calculations are compared to data from the exclusive ppe+e- channel by means of the dielectron and pe+e- invariant mass distributions.",

author = "G. Agakishiev and A. Balanda and D. Belver and A. Belyaev and Berger-Chen, {J. C.} and A. Blanco and M. B{\"o}hmer and Boyard, {J. L.} and P. Cabanelas and S. Chernenko and A. Dybczak and E. Epple and L. Fabbietti and O. Fateev and P. Finocchiaro and P. Fonte and J. Friese and I. Fr{\"o}hlich and T. Galatyuk and Gar{\'z}on, {J. A.} and R. Gernh{\"a}user and K. G{\"o}bel and M. Golubeva and D. Gon{\'z}alez-{\'D}iaz and F. Guber and M. Gumberidze and T. Heinz and T. Hennino and R. Holzmann and A. Ierusalimov and I. Iori and A. Ivashkin and M. Jurkovic and B. K{\"a}mpfer and T. Karavicheva and I. Koenig and W. Koenig and Kolb, {B. W.} and G. Kornakov and R. Kotte and A. Kr{\'a}sa and F. Krizek and R. Kr{\"u}cken and H. Kuc and W. K{\"u}hn and A. Kugler and A. Kurepin and V. Ladygin and R. Lalik and S. Lang and K. Lapidus and A. Lebedev and T. Liu and L. Lopes and M. Lorenz and L. Maier and A. Mangiarott and J. Markert and V. Metag and B. Michalska and J. Miche and C. {\"M}untz and L. Naumann and Pachmayer, {Y. C.} and M. Palka and Y. Parpottas and V. Pechenov and O. Pechenova and J. Pietraszko and W. Przygoda and B. Ramstein and A. Reshetin and A. Rustamov and A. Sadovsky and P. Salabura and A. Schmah and E. Schwab and J. Siebenson and Sobolev, {Yu G.} and S. Spataroh and B. Spruck and H. St{\"r}obele and J. Stroth and C. Sturm and A. Tarantola and K. Teilab and P. Tlusty and M. Traxler and R. Trebacz and H. Tsertos and T. Vasiliev and V. Wagner and M. Weber and C. Wendisch and J. Ẅustenfeld and S. Yurevich and Y. Zanevsky",

year = "2014",

doi = "10.1140/epja/i2014-14082-1",

language = "English",

volume = "50",

pages = "1--16",

journal = "European Physical Journal A",

issn = "1434-6001",

number = "5",

}

Agakishiev, G, Balanda, A, Belver, D, Belyaev, A, Berger-Chen, JC, Blanco, A, Böhmer, M, Boyard, JL, Cabanelas, P, Chernenko, S, Dybczak, A, Epple, E, Fabbietti, L, Fateev, O, Finocchiaro, P, Fonte, P, Friese, J, Fröhlich, I, Galatyuk, T, Garźon, JA, Gernhäuser, R, Göbel, K, Golubeva, M, Gonźalez-D́iaz, D, Guber, F, Gumberidze, M, Heinz, T, Hennino, T, Holzmann, R, Ierusalimov, A, Iori, I, Ivashkin, A, Jurkovic, M, Kämpfer, B, Karavicheva, T, Koenig, I, Koenig, W, Kolb, BW, Kornakov, G, Kotte, R, Krása, A, Krizek, F, Krücken, R, Kuc, H, Kühn, W, Kugler, A, Kurepin, A, Ladygin, V, Lalik, R, Lang, S, Lapidus, K, Lebedev, A, Liu, T, Lopes, L, Lorenz, M, Maier, L, Mangiarott, A, Markert, J, Metag, V, Michalska, B, Miche, J, M̈untz, C, Naumann, L, Pachmayer, YC, Palka, M, Parpottas, Y, Pechenov, V, Pechenova, O, Pietraszko, J, Przygoda, W, Ramstein, B, Reshetin, A, Rustamov, A, Sadovsky, A, Salabura, P, Schmah, A, Schwab, E, Siebenson, J, Sobolev, YG, Spataroh, S, Spruck, B, Str̈obele, H, Stroth, J, Sturm, C, Tarantola, A, Teilab, K, Tlusty, P, Traxler, M, Trebacz, R, Tsertos, H, Vasiliev, T, Wagner, V, Weber, M, Wendisch, C, Ẅustenfeld, J, Yurevich, S & Zanevsky, Y 2014, 'Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV', European Physical Journal A, vol. 50, no. 5, 82, pp. 1-16. https://doi.org/10.1140/epja/i2014-14082-1

TY - JOUR

T1 - Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

AU - Agakishiev, G.

AU - Balanda, A.

AU - Belver, D.

AU - Belyaev, A.

AU - Berger-Chen, J. C.

AU - Blanco, A.

AU - Böhmer, M.

AU - Boyard, J. L.

AU - Cabanelas, P.

AU - Chernenko, S.

AU - Dybczak, A.

AU - Epple, E.

AU - Fabbietti, L.

AU - Fateev, O.

AU - Finocchiaro, P.

AU - Fonte, P.

AU - Friese, J.

AU - Fröhlich, I.

AU - Galatyuk, T.

AU - Garźon, J. A.

AU - Gernhäuser, R.

AU - Göbel, K.

AU - Golubeva, M.

AU - Gonźalez-D́iaz, D.

AU - Guber, F.

AU - Gumberidze, M.

AU - Heinz, T.

AU - Hennino, T.

AU - Holzmann, R.

AU - Ierusalimov, A.

AU - Iori, I.

AU - Ivashkin, A.

AU - Jurkovic, M.

AU - Kämpfer, B.

AU - Karavicheva, T.

AU - Koenig, I.

AU - Koenig, W.

AU - Kolb, B. W.

AU - Kornakov, G.

AU - Kotte, R.

AU - Krása, A.

AU - Krizek, F.

AU - Krücken, R.

AU - Kuc, H.

AU - Kühn, W.

AU - Kugler, A.

AU - Kurepin, A.

AU - Ladygin, V.

AU - Lalik, R.

AU - Lang, S.

AU - Lapidus, K.

AU - Lebedev, A.

AU - Liu, T.

AU - Lopes, L.

AU - Lorenz, M.

AU - Maier, L.

AU - Mangiarott, A.

AU - Markert, J.

AU - Metag, V.

AU - Michalska, B.

AU - Miche, J.

AU - M̈untz, C.

AU - Naumann, L.

AU - Pachmayer, Y. C.

AU - Palka, M.

AU - Parpottas, Y.

AU - Pechenov, V.

AU - Pechenova, O.

AU - Pietraszko, J.

AU - Przygoda, W.

AU - Ramstein, B.

AU - Reshetin, A.

AU - Rustamov, A.

AU - Sadovsky, A.

AU - Salabura, P.

AU - Schmah, A.

AU - Schwab, E.

AU - Siebenson, J.

AU - Sobolev, Yu G.

AU - Spataroh, S.

AU - Spruck, B.

AU - Str̈obele, H.

AU - Stroth, J.

AU - Sturm, C.

AU - Tarantola, A.

AU - Teilab, K.

AU - Tlusty, P.

AU - Traxler, M.

AU - Trebacz, R.

AU - Tsertos, H.

AU - Vasiliev, T.

AU - Wagner, V.

AU - Weber, M.

AU - Wendisch, C.

AU - Ẅustenfeld, J.

AU - Yurevich, S.

AU - Zanevsky, Y.

PY - 2014

Y1 - 2014

N2 - We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of 3.5 GeV based on data measured with HADES. The exclusive channels pp → npπ+ and pp → ppπ0 as well as pp → ppe+e- are studied simultaneously for the first time. The invariant masses and angular distributions of the pion-nucleon systems were studied and compared to simulations based on a resonance model ansatz assuming saturation of the pion production by an incoherent sum of baryonic resonances (R) with masses < 2 GeV/c2. A very good description of the one-pion production is achieved allowing for an estimate of individual baryon resonance production cross sections which are used as input to calculate the dielectron yields from R → pe+e- decays. Two models of the resonance decays into dielectrons are examined assuming a point-like RNγ* coupling and the dominance of the ρ meson. The results of model calculations are compared to data from the exclusive ppe+e- channel by means of the dielectron and pe+e- invariant mass distributions.

AB - We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of 3.5 GeV based on data measured with HADES. The exclusive channels pp → npπ+ and pp → ppπ0 as well as pp → ppe+e- are studied simultaneously for the first time. The invariant masses and angular distributions of the pion-nucleon systems were studied and compared to simulations based on a resonance model ansatz assuming saturation of the pion production by an incoherent sum of baryonic resonances (R) with masses < 2 GeV/c2. A very good description of the one-pion production is achieved allowing for an estimate of individual baryon resonance production cross sections which are used as input to calculate the dielectron yields from R → pe+e- decays. Two models of the resonance decays into dielectrons are examined assuming a point-like RNγ* coupling and the dominance of the ρ meson. The results of model calculations are compared to data from the exclusive ppe+e- channel by means of the dielectron and pe+e- invariant mass distributions.

UR - http://www.scopus.com/inward/record.url?scp=84940360915&partnerID=8YFLogxK

U2 - 10.1140/epja/i2014-14082-1

DO - 10.1140/epja/i2014-14082-1

M3 - Article

AN - SCOPUS:84940360915

SN - 1434-6001

VL - 50

SP - 1

EP - 16

JO - European Physical Journal A

JF - European Physical Journal A

IS - 5

M1 - 82

ER -

Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

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