Search for scalar quarks in e+e- collisions at √s up to 209 GeV

A. Heister; S. Schael; R. Barate; R. Brunelière; I. De Bonis; D. Decamp; C. Goy; S. Jezequel; J. P. Lees; F. Martin; E. Merle; M. N. Minard; B. Pietrzyk; B. Trocmé; G. Boix; S. Bravo; M. P. Casado; M. Chmeissani; J. M. Crespo; E. Fernandez; M. Fernandez-Bosman; Ll Garrido; E. Graugés; J. Lopez; M. Martinez; G. Merino; R. Miquel; Ll M. Mir; A. Pacheco; D. Paneque; H. Ruiz; A. Colaleo; D. Creanza; N. De Filippis; M. De Palma; G. Iaselli; G. Maggi; M. Maggi; S. Nuzzo; A. Ranieri; G. Raso; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; A. Tricomi; G. Zito; X. Huang; J. Lin; Q. Ouyang; T. Wang; Y. Xie; R. Xu; S. Xue; J. Zhang; L. Zhang; W. Zhao; D. Abbaneo; P. Azzurri; T. Barklow; O. Buchmüller; M. Cattaneo; F. Cerutti; B. Clerbaux; H. Drevermann; R. W. Forty; M. Frank; F. Gianotti; T. C. Greening; J. B. Hansen; J. Harvey; D. E. Hutchcroft; P. Janot; B. Jost; M. Kado; P. Mato; A. Moutoussi; F. Ranjard; L. Rolandi; D. Schlatter; G. Sguazzoni; W. Tejessy; F. Teubert; A. Valassi; I. Videau; J. J. Ward; F. Badaud; S. Dessagne; A. Falvard; D. Fayolle; P. Gay; J. Jousset; B. Michel; S. Monteil; D. Pallin; J. M. Pascolo; P. Perret

doi:10.1016/S0370-2693(02)01827-0

Search for scalar quarks in e⁺e^- collisions at √s up to 209 GeV

A. Heister, S. Schael, R. Barate, R. Brunelière, I. De Bonis, D. Decamp, C. Goy, S. Jezequel, J. P. Lees, F. Martin, E. Merle, M. N. Minard, B. Pietrzyk, B. Trocmé, G. Boix, S. Bravo, M. P. Casado, M. Chmeissani, J. M. Crespo, E. FernandezM. Fernandez-Bosman, Ll Garrido, E. Graugés, J. Lopez, M. Martinez, G. Merino, R. Miquel, Ll M. Mir, A. Pacheco, D. Paneque, H. Ruiz, A. Colaleo, D. Creanza, N. De Filippis, M. De Palma, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, P. Azzurri, T. Barklow, O. Buchmüller, M. Cattaneo, F. Cerutti, B. Clerbaux, H. Drevermann, R. W. Forty, M. Frank, F. Gianotti, T. C. Greening, J. B. Hansen, J. Harvey, D. E. Hutchcroft, P. Janot, B. Jost, M. Kado, P. Mato, A. Moutoussi, F. Ranjard, L. Rolandi, D. Schlatter, G. Sguazzoni, W. Tejessy, F. Teubert, A. Valassi, I. Videau, J. J. Ward, F. Badaud, S. Dessagne, A. Falvard, D. Fayolle, P. Gay, J. Jousset, B. Michel, S. Monteil, D. Pallin, J. M. Pascolo, P. Perret

Department of Physics

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Abstract

Searches for scalar top, scalar bottom and mass-degenerate scalar quarks are performed in the data collected by the ALEPH detector at LEP, at centre-of-mass energies up to 209 GeV, corresponding to an integrated luminosity of 675 pb-1. No evidence for the production of such particles is found in the decay channels t̃ →c/ux, t̃ → bℓṽ,b̃ → bx,q̃ → qx or in the stop four-body decay channel t̃ → bxff̄′ studied for the first time at LEP. The results of these searches yield improved mass lower limits. In particular, an absolute lower limit of 63 GeV/c2 is obtained for the stop mass, at 95% confidence level, irrespective of the stop lifetime and decay branching ratios. © 2002 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	5-20
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	537
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(02)01827-0
Publication status	Published - 13 Jun 2002

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10.1016/S0370-2693(02)01827-0

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Heister, A., Schael, S., Barate, R., Brunelière, R., De Bonis, I., Decamp, D., Goy, C., Jezequel, S., Lees, J. P., Martin, F., Merle, E., Minard, M. N., Pietrzyk, B., Trocmé, B., Boix, G., Bravo, S., Casado, M. P., Chmeissani, M., Crespo, J. M., ... Perret, P. (2002). Search for scalar quarks in e⁺e^- collisions at √s up to 209 GeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 537(1-2), 5-20. https://doi.org/10.1016/S0370-2693(02)01827-0

@article{63378f8c72b44968979966ae1c94bb9f,

title = "Search for scalar quarks in e+e- collisions at √s up to 209 GeV",

abstract = "Searches for scalar top, scalar bottom and mass-degenerate scalar quarks are performed in the data collected by the ALEPH detector at LEP, at centre-of-mass energies up to 209 GeV, corresponding to an integrated luminosity of 675 pb-1. No evidence for the production of such particles is found in the decay channels {\~t} →c/ux, {\~t} → bℓṽ,{\~b} → bx,{\~q} → qx or in the stop four-body decay channel {\~t} → bxf{\=f}′ studied for the first time at LEP. The results of these searches yield improved mass lower limits. In particular, an absolute lower limit of 63 GeV/c2 is obtained for the stop mass, at 95% confidence level, irrespective of the stop lifetime and decay branching ratios. {\textcopyright} 2002 Elsevier Science B.V. All rights reserved.",

author = "A. Heister and S. Schael and R. Barate and R. Bruneli{\`e}re and {De Bonis}, I. and D. Decamp and C. Goy and S. Jezequel and Lees, {J. P.} and F. Martin and E. Merle and Minard, {M. N.} and B. Pietrzyk and B. Trocm{\'e} and G. Boix and S. Bravo and Casado, {M. P.} and M. Chmeissani and Crespo, {J. M.} and E. Fernandez and M. Fernandez-Bosman and Ll Garrido and E. Graug{\'e}s and J. Lopez and M. Martinez and G. Merino and R. Miquel and Mir, {Ll M.} and A. Pacheco and D. Paneque and H. Ruiz and A. Colaleo and D. Creanza and {De Filippis}, N. and {De Palma}, M. and G. Iaselli and G. Maggi and M. Maggi and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and A. Tricomi and G. Zito and X. Huang and J. Lin and Q. Ouyang and T. Wang and Y. Xie and R. Xu and S. Xue and J. Zhang and L. Zhang and W. Zhao and D. Abbaneo and P. Azzurri and T. Barklow and O. Buchm{\"u}ller and M. Cattaneo and F. Cerutti and B. Clerbaux and H. Drevermann and Forty, {R. W.} and M. Frank and F. Gianotti and Greening, {T. C.} and Hansen, {J. B.} and J. Harvey and Hutchcroft, {D. E.} and P. Janot and B. Jost and M. Kado and P. Mato and A. Moutoussi and F. Ranjard and L. Rolandi and D. Schlatter and G. Sguazzoni and W. Tejessy and F. Teubert and A. Valassi and I. Videau and Ward, {J. J.} and F. Badaud and S. Dessagne and A. Falvard and D. Fayolle and P. Gay and J. Jousset and B. Michel and S. Monteil and D. Pallin and Pascolo, {J. M.} and P. Perret",

year = "2002",

month = jun,

day = "13",

doi = "10.1016/S0370-2693(02)01827-0",

language = "English",

volume = "537",

pages = "5--20",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

Heister, A, Schael, S, Barate, R, Brunelière, R, De Bonis, I, Decamp, D, Goy, C, Jezequel, S, Lees, JP, Martin, F, Merle, E, Minard, MN, Pietrzyk, B, Trocmé, B, Boix, G, Bravo, S, Casado, MP, Chmeissani, M, Crespo, JM, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Graugés, E, Lopez, J, Martinez, M, Merino, G, Miquel, R, Mir, LM, Pacheco, A, Paneque, D, Ruiz, H, Colaleo, A, Creanza, D, De Filippis, N, De Palma, M, Iaselli, G, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A, Raso, G, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Tricomi, A, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Abbaneo, D, Azzurri, P, Barklow, T, Buchmüller, O, Cattaneo, M, Cerutti, F, Clerbaux, B, Drevermann, H, Forty, RW, Frank, M, Gianotti, F, Greening, TC, Hansen, JB, Harvey, J, Hutchcroft, DE, Janot, P, Jost, B, Kado, M, Mato, P, Moutoussi, A, Ranjard, F, Rolandi, L, Schlatter, D, Sguazzoni, G, Tejessy, W, Teubert, F, Valassi, A, Videau, I, Ward, JJ, Badaud, F, Dessagne, S, Falvard, A, Fayolle, D, Gay, P, Jousset, J, Michel, B, Monteil, S, Pallin, D, Pascolo, JM & Perret, P 2002, 'Search for scalar quarks in e⁺e^- collisions at √s up to 209 GeV', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 537, no. 1-2, pp. 5-20. https://doi.org/10.1016/S0370-2693(02)01827-0

TY - JOUR

T1 - Search for scalar quarks in e+e- collisions at √s up to 209 GeV

AU - Heister, A.

AU - Schael, S.

AU - Barate, R.

AU - Brunelière, R.

AU - De Bonis, I.

AU - Decamp, D.

AU - Goy, C.

AU - Jezequel, S.

AU - Lees, J. P.

AU - Martin, F.

AU - Merle, E.

AU - Minard, M. N.

AU - Pietrzyk, B.

AU - Trocmé, B.

AU - Boix, G.

AU - Bravo, S.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, Ll

AU - Graugés, E.

AU - Lopez, J.

AU - Martinez, M.

AU - Merino, G.

AU - Miquel, R.

AU - Mir, Ll M.

AU - Pacheco, A.

AU - Paneque, D.

AU - Ruiz, H.

AU - Colaleo, A.

AU - Creanza, D.

AU - De Filippis, N.

AU - De Palma, M.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Tricomi, A.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Ouyang, Q.

AU - Wang, T.

AU - Xie, Y.

AU - Xu, R.

AU - Xue, S.

AU - Zhang, J.

AU - Zhang, L.

AU - Zhao, W.

AU - Abbaneo, D.

AU - Azzurri, P.

AU - Barklow, T.

AU - Buchmüller, O.

AU - Cattaneo, M.

AU - Cerutti, F.

AU - Clerbaux, B.

AU - Drevermann, H.

AU - Forty, R. W.

AU - Frank, M.

AU - Gianotti, F.

AU - Greening, T. C.

AU - Hansen, J. B.

AU - Harvey, J.

AU - Hutchcroft, D. E.

AU - Janot, P.

AU - Jost, B.

AU - Kado, M.

AU - Mato, P.

AU - Moutoussi, A.

AU - Ranjard, F.

AU - Rolandi, L.

AU - Schlatter, D.

AU - Sguazzoni, G.

AU - Tejessy, W.

AU - Teubert, F.

AU - Valassi, A.

AU - Videau, I.

AU - Ward, J. J.

AU - Badaud, F.

AU - Dessagne, S.

AU - Falvard, A.

AU - Fayolle, D.

AU - Gay, P.

AU - Jousset, J.

AU - Michel, B.

AU - Monteil, S.

AU - Pallin, D.

AU - Pascolo, J. M.

AU - Perret, P.

PY - 2002/6/13

Y1 - 2002/6/13

N2 - Searches for scalar top, scalar bottom and mass-degenerate scalar quarks are performed in the data collected by the ALEPH detector at LEP, at centre-of-mass energies up to 209 GeV, corresponding to an integrated luminosity of 675 pb-1. No evidence for the production of such particles is found in the decay channels t̃ →c/ux, t̃ → bℓṽ,b̃ → bx,q̃ → qx or in the stop four-body decay channel t̃ → bxff̄′ studied for the first time at LEP. The results of these searches yield improved mass lower limits. In particular, an absolute lower limit of 63 GeV/c2 is obtained for the stop mass, at 95% confidence level, irrespective of the stop lifetime and decay branching ratios. © 2002 Elsevier Science B.V. All rights reserved.

AB - Searches for scalar top, scalar bottom and mass-degenerate scalar quarks are performed in the data collected by the ALEPH detector at LEP, at centre-of-mass energies up to 209 GeV, corresponding to an integrated luminosity of 675 pb-1. No evidence for the production of such particles is found in the decay channels t̃ →c/ux, t̃ → bℓṽ,b̃ → bx,q̃ → qx or in the stop four-body decay channel t̃ → bxff̄′ studied for the first time at LEP. The results of these searches yield improved mass lower limits. In particular, an absolute lower limit of 63 GeV/c2 is obtained for the stop mass, at 95% confidence level, irrespective of the stop lifetime and decay branching ratios. © 2002 Elsevier Science B.V. All rights reserved.

U2 - 10.1016/S0370-2693(02)01827-0

DO - 10.1016/S0370-2693(02)01827-0

M3 - Article

SN - 0370-2693

VL - 537

SP - 5

EP - 20

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

ER -

Search for scalar quarks in e+e- collisions at √s up to 209 GeV

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Search for scalar quarks in e⁺e^- collisions at √s up to 209 GeV