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arXiv · 1004.0925

Pion femtoscopy in p+p collisions at sqrt(s)=200 GeV

M. M. Aggarwal·Z. Ahammed·A. V. Alakhverdyants·I. Alekseev·J. Alford·B. D. Anderson·D. Arkhipkin·G. S. Averichev·J. Balewski·L. S. Barnby·S. Baumgart·D. R. Beavis·R. Bellwied·M. J. Betancourt·R. R. Betts·A. Bhasin·A. K. Bhati·H. Bichsel·J. Bielcik·J. Bielcikova·B. Biritz·L. C. Bland·3 B. E. Bonner·J. Bouchet·E. Braidot·A. V. Brandin·A. Bridgeman·E. Bruna·S. Bueltmann·I. Bunzarov·T. P. Burton·X. Z. Cai·H. Caines·M. Calderón de la Barca Sánchez·O. Catu·D. Cebra·R. Cendejas·M. C. Cervantes·Z. Chajecki·P. Chaloupka·S. Chattopadhyay·H. F. Chen·J. H. Chen·J. Y. Chen·J. Cheng·M. Cherney·A. Chikanian·K. E. Choi·W. Christie·P. Chung·R. F. Clarke·M. J. M. Codrington·R. Corliss·J. G. Cramer·H. J. Crawford·D. Das·S. Dash·A. Davila Leyva·L. C. De Silva·R. R. Debbe·T. G. Dedovich·A. A. Derevschikov·R. Derradi de Souza·L. Didenko·P. Djawotho·S. M. Dogra·X. Dong·J. L. Drachenberg·J. E. Draper·J. C. Dunlop·M. R. Dutta Mazumdar·L. G. Efimov·E. Elhalhuli·M. Elnimr·J. Engelage·G. Eppley·B. Erazmus·M. Estienne·L. Eun·O. Evdokimov·P. Fachini·R. Fatemi·J. Fedorisin·R. G. Fersch·P. Filip·E. Finch·V. Fine·Y. Fisyak·C. A. Gagliardi·D. R. Gangadharan·M. S. Ganti·E. J. Garcia-Solis·A. Geromitsos·F. Geurts·V. Ghazikhanian·P. Ghosh·Y. N. Gorbunov·A. Gordon·O. Grebenyuk·D. Grosnick
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Abstract

The STAR Collaboration at RHIC has measured two-pion correlation functions from p+p collisions at sqrt(s)=200 GeV. Spatial scales are extracted via a femtoscopic analysis of the correlations, though this analysis is complicated by the presence of strong non-femtoscopic effects. Our results are put into the context of the world dataset of femtoscopy in hadron-hadron collisions. We present the first direct comparison of femtoscopy in p+p and heavy ion collisions, under identical analysis and detector conditions.

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M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, 3 B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick. 2010-04-06. Pion femtoscopy in p+p collisions at sqrt(s)=200 GeV. https://doi.org/10.1103/physrevc.83.064905

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