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101. Event-plane-dependent dihadron correlations with harmonic vn subtraction in Au + Au collisions at s NN =200 GeV

Author

Agakishiev, H, Aggarwal, MM, Ahammed, Z, Alakhverdyants, AV, Alekseev, I, Alford, J, Anderson, BD, Anson, CD, Arkhipkin, D, Averichev, GS, Balewski, J, Beavis, DR, Behera, NK, Bellwied, R, Betancourt, MJ, Betts, RR, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, LC, Borowski, W, Bouchet, J, Braidot, E, Brandin, AV, Bridgeman, A, Brovko, SG, Bruna, E, Bueltmann, S, Bunzarov, I, Burton, TP, Cai, XZ, Caines, H, De La Barca Sánchez, MC, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Chen, L, Cheng, J, Cherney, M, Chikanian, A, Choi, KE, Christie, W, Chung, P, Codrington, MJM, Corliss, R, Cramer, JG, Crawford, HJ, Dash, S, Leyva, AD, De Silva, LC, Debbe, RR, Dedovich, TG, Derevschikov, AA, De Souza, RD, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Dunlop, JC, Efimov, LG, Elnimr, M, Engelage, J, Eppley, G, Estienne, M, Eun, L, Evdokimov, O, Fatemi, R, Fedorisin, J, Feng, A, Fersch, RG, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gangadharan, DR, Geromitsos, A, Geurts, F, Ghosh, P, Gorbunov, YN, Gordon, A, Grebenyuk, O, Grosnick, D, Guertin, SM, Gupta, A, Guryn, W, Haag, B, Hajkova, O, and Hamed, A

Subjects
nucl-ex, nucl-th, Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

STAR measurements of dihadron azimuthal correlations (Δφ) are reported in midcentral (20-60%) Au+Au collisions at sNN=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane, φs=|φt-ψEP|. The elliptic (v2), triangular (v3), and quadratic (v4) flow harmonic backgrounds are subtracted using the zero yield at minimum (ZYAM) method. The results are compared to minimum-bias d+Au collisions. It is found that a finite near-side (|Δφ|π/2) correlation shows a modification from d+Au data, varying with φs. The modification may be a consequence of path-length-dependent jet quenching and may lead to a better understanding of high-density QCD. © 2014 American Physical Society.

Published
2014

102. Event-plane-dependent dihadron correlations with harmonic vn subtraction in Au + Au collisions at sNN=200 GeV

Author

Agakishiev, H, Aggarwal, MM, Ahammed, Z, Alakhverdyants, AV, Alekseev, I, Alford, J, Anderson, BD, Anson, CD, Arkhipkin, D, Averichev, GS, Balewski, J, Beavis, DR, Behera, NK, Bellwied, R, Betancourt, MJ, Betts, RR, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, LC, Borowski, W, Bouchet, J, Braidot, E, Brandin, AV, Bridgeman, A, Brovko, SG, Bruna, E, Bueltmann, S, Bunzarov, I, Burton, TP, Cai, XZ, Caines, H, de la Barca Sánchez, M Calderón, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Chen, L, Cheng, J, Cherney, M, Chikanian, A, Choi, KE, Christie, W, Chung, P, Codrington, MJM, Corliss, R, Cramer, JG, Crawford, HJ, Dash, S, Leyva, A Davila, De Silva, LC, Debbe, RR, Dedovich, TG, Derevschikov, AA, de Souza, R Derradi, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Dunlop, JC, Efimov, LG, Elnimr, M, Engelage, J, Eppley, G, Estienne, M, Eun, L, Evdokimov, O, Fatemi, R, Fedorisin, J, Feng, A, Fersch, RG, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gangadharan, DR, Geromitsos, A, Geurts, F, Ghosh, P, Gorbunov, YN, Gordon, A, Grebenyuk, O, Grosnick, D, Guertin, SM, Gupta, A, Guryn, W, Haag, B, Hajkova, O, and Hamed, A

Subjects
nucl-ex, nucl-th, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract

STAR measurements of dihadron azimuthal correlations (Δφ) are reported in midcentral (20-60%) Au+Au collisions at sNN=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane, φs=|φt-ψEP|. The elliptic (v2), triangular (v3), and quadratic (v4) flow harmonic backgrounds are subtracted using the zero yield at minimum (ZYAM) method. The results are compared to minimum-bias d+Au collisions. It is found that a finite near-side (|Δφ|π/2) correlation shows a modification from d+Au data, varying with φs. The modification may be a consequence of path-length-dependent jet quenching and may lead to a better understanding of high-density QCD. © 2014 American Physical Society.

Published
2014

103. Beam-Energy and System-Size Dependence of Dynamical Net Charge Fluctuations

Author

Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Beavis, D. R., Bellwied, R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Biritz, B., Bland, L. C., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Braidot, E., Brandin, A. V., Bueltmann, S., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sánchez, M. Calderón de la Barca, Callner, J., Catu, O., Cebra, D., Cendejas, R., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., Dedovich, T. G., DePhillips, M., Derevschikov, A. A., de Souza, R. Derradi, Didenko, L., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunlop, J. C., Mazumdar, M. R. Dutta, Edwards, W. R., Efimov, L. G., Elhalhuli, E., Elnimr, M., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Gagliardi, C. A., Gaillard, L., Gangadharan, D. R., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., Ghosh, P., Gorbunov, Y. N., Gordon, A., Grebenyuk, O., Grosnick, D., Grube, B., Guertin, S. M., Guimaraes, K. S. F. F., Gupta, A., Gupta, N., Guryn, W., Haag, B., Hallman, T. J., Hamed, A., Harris, J. W., He, W., Heinz, M., Heppelmann, S., Hippolyte, B., Hirsch, A., Hoffman, A. M., Hoffmann, G. W., Hofman, D. J., Hollis, R. S., Huang, H. Z., Humanic, T. J., Igo, G., Iordanova, A., Jacobs, P., Jacobs, W. W., Jakl, P., Jin, F., Jones, P. G., Judd, E. G., Kabana, S., Kajimoto, K., Kang, K., Kapitan, J., Kaplan, M., Keane, D., Kechechyan, A., Kettler, D., Khodyrev, V. Yu., Kiryluk, J., Kisiel, A., Klein, S. R., Knospe, A. G., Kocoloski, A., Koetke, D. D., Kopytine, M., Kotchenda, L., Kouchpil, V., Kravtsov, P., Kravtsov, V. I., Krueger, K., Kuhn, C., Kumar, L., Kurnadi, P., Lamont, M. A. C., Landgraf, J. M., LaPointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, C-H., LeVine, M. J., Li, C., Li, Y., Lin, G., Lin, X., Lindenbaum, S. J., Lisa, M. A., Liu, F., Liu, J., Liu, L., Ljubicic, T., Llope, W. J., Longacre, R. S., Love, W. A., Lu, Y., Ludlam, T., Lynn, D., Ma, G. L., Ma, Y. G., Mahapatra, D. P., Majka, R., Mangotra, L. K., Manweiler, R., Margetis, S., Markert, C., Matis, H. S., Matulenko, Yu. A., McShane, T. S., Meschanin, A., Millane, J., Miller, M. L., Minaev, N. G., Mioduszewski, S., Mischke, A., Mitchell, J., Mohanty, B., Morozov, D. A., Munhoz, M. G., Nandi, B. K., Nattrass, C., Nayak, T. K., Nelson, J. M., Nepali, C., Netrakanti, P. K., Ng, M. J., Nogach, L. V., Nurushev, S. B., Odyniec, G., Ogawa, A., Okada, H., Okorokov, V., Olson, D., Pachr, M., Pal, S. K., Panebratsev, Y., Pawlak, T., Peitzmann, T., Perevoztchikov, V., Perkins, C., Peryt, W., Phatak, S. C., Planinic, M., Pluta, J., Poljak, N., Porile, N., Poskanzer, A. M., Potukuchi, B. V. K. S., Prindle, D., Pruneau, C., Pruthi, N. K., Putschke, J., Qattan, I. A., Raniwala, R., Raniwala, S., Ray, R. L., Ridiger, A., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Rose, A., Roy, C., Ruan, L., Russcher, M. J., Rykov, V., Sahoo, R., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Sarsour, M., Schambach, J., Scharenberg, R. P., Schmitz, N., Seger, J., Selyuzhenkov, I., Seyboth, P., Shabetai, A., Shahaliev, E., Shao, M., Sharma, M., Shi, S. S., Shi, X-H., Sichtermann, E. P., Simon, F., Singaraju, R. N., Skoby, M. J., Smirnov, N., Snellings, R., Sorensen, P., Sowinski, J., Spinka, H. M., Srivastava, B., Stadnik, A., Stanislaus, T. D. S., Staszak, D., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Subba, N. L., Sumbera, M., Sun, X. M., Sun, Y., Sun, Z., Surrow, B., Symons, T. J. M., de Toledo, A. Szanto, Takahashi, J., Tang, A. H., Tang, Z., Tarnowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Timoshenko, S., Tokarev, M., Trainor, T. A., Tram, V. N., Trattner, A. L., Trentalange, S., Tribble, R. E., Tsai, O. D., Ulery, J., Ullrich, T., Underwood, D. G., Van Buren, G., van der Kolk, N., van Leeuwen, M., Molen, A. M. Vander, Varma, R., Vasconcelos, G. M. S., Vasilevski, I. M., Vasiliev, A. N., Videbaek, F., Vigdor, S. E., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Wada, M., Waggoner, W. T., Wang, F., Wang, G., Wang, J. S., Wang, Q., Wang, X., Wang, X. L., Wang, Y., Webb, J. C., Westfall, G. D., Whitten Jr., C., Wieman, H., Wissink, S. W., Witt, R., Wu, J., Wu, Y., Xu, N., Xu, Q. H., Xu, Y., Xu, Z., Yepes, P., Yoo, I-K., Yue, Q., Zawisza, M., Zbroszczyk, H., Zhan, W., Zhang, H., Zhang, S., Zhang, W. M., Zhang, Y., Zhang, Z. P., Zhao, Y., Zhong, C., Zhou, J., Zoulkarneev, R., Zoulkarneeva, Y., and Zuo, J. X.

Subjects
Nuclear Experiment
Abstract

We present measurements of net charge fluctuations in $Au + Au$ collisions at $\sqrt{s_{NN}} = $ 19.6, 62.4, 130, and 200 GeV, $Cu + Cu$ collisions at $\sqrt{s_{NN}} = $ 62.4, 200 GeV, and $p + p$ collisions at $\sqrt{s} = $ 200 GeV using the dynamical net charge fluctuations measure $\nu_{+-{\rm,dyn}}$. We observe that the dynamical fluctuations are non-zero at all energies and exhibit a modest dependence on beam energy. A weak system size dependence is also observed. We examine the collision centrality dependence of the net charge fluctuations and find that dynamical net charge fluctuations violate $1/N_{ch}$ scaling, but display approximate $1/N_{part}$ scaling. We also study the azimuthal and rapidity dependence of the net charge correlation strength and observe strong dependence on the azimuthal angular range and pseudorapidity widths integrated to measure the correlation., Comment: 15 pages, 6 figures, STAR Collaboration

Published
2008
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104. First Measurement of A_N at sqrt(s)=200 GeV in Polarized Proton-Proton Elastic Scattering at RHIC

Author

Bueltmann, S.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

We report on the first measurement of the single spin analyzing power (A_N) at sqrt(s)=200GeV, obtained by the pp2pp experiment using polarized proton beams at the Relativistic Heavy Ion Collider (RHIC). Data points were measured in the four momentum transfer t range 0.01 < |t| < 0.03 (GeV/c)^2. Our result, averaged over the whole t-interval is about one standard deviation above the calculation, which uses interference between electromagnetic spin-flip amplitude and hadronic non-flip amplitude, the source of A_N. The difference could be explained by an additional contribution of a hadronic spin-flip amplitude to A_N., Comment: 13 pages, 5 figures. New values of polarization errors. Final version submitted to Phys. Lett. B

Published
2005
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105. Nuclear transparency from quasielastic 12C(e,e'p)

Author

Rohe, D., Benhar, O., Armstrong, C. S., Asaturyan, R., Baker, O. K., Bueltmann, S., Carasco, C., Day, D., Ent, R., Fenker, H. C., Garrow, K., Gasparian, A., Gueye, P., Hauger, M., Honegger, A., Jourdan, J., Keppel, C. E., Kubon, G., Lindgren, R., Lung, A., Mack, D. J., Mitchell, J. H., Mkrtchyan, H., Mocelj, D., Normand, K., Petitjean, T., Rondon, O., Segbefia, E., Sick, I., Stepanyan, S., Tang, L., Tiefenbacher, F., Vulcan, W. F., Warren, G., Wood, S. A., Yuan, L., Zeier, M., Zhu, H., and Zihlmann, B.

Subjects
Nuclear Experiment
Abstract

We studied the reaction 12C(e,e'p) in quasielastic kinematics at momentum transfers between 0.6 and 1.8 (GeV/c)^2 covering the single-particle region. From this the nuclear transparency factors are extracted using two methods. The results are compared to theoretical predictions obtained using a generalization of Glauber theory described in this paper. Furthermore, the momentum distribution in the region of the 1s-state up to momenta of 300 MeV/c is obtained from the data and compared to the Correlated Basis Function theory and the Independent-Particle Shell model., Comment: accepted by Phys. Rev. C

Published
2005
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107. Correlated Strength in Nuclear Spectral Function

Author

Rohe, D., Armstrong, C. S., Asaturyan, R., Baker, O. K., Bueltmann, S., Carasco, C., Day, D., Ent, R., Fenker, H. C., Garrow, K., Gasparian, A., Gueye, P., Hauger, M., Honegger, A., Jourdan, J., Keppel, C. E., Kubon, G., Lindgren, R., Lung, A., Mack, D. J., Mitchell, J. H., Mkrtchyan, H., Mocelj, D., Normand, K., Petitjean, T., Rondon, O., Segbefia, E., Sick, I., Stepanyan, S., Tang, L., Tiefenbacher, F., Vulcan, W. F., Warren, G., Wood, S. A., Yuan, L., Zeier, M., Zhu, H., and Zihlmann, B.

Subjects
Nuclear Experiment
Abstract

We have carried out an (e,e'p) experiment at high momentum transfer and in parallel kinematics to measure the strength of the nuclear spectral function S(k,E) at high nucleon momenta k and large removal energies E. This strength is related to the presence of short-range and tensor correlations, and was known hitherto only indirectly and with considerable uncertainty from the lack of strength in the independent-particle region. This experiment confirms by direct measurement the correlated strength predicted by theory., Comment: 4 pages, 2 figures, accepted by Phys. Rev. Lett

Published
2004
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108. First Measurement of Proton-Proton Elastic Scattering at RHIC

Author

Bueltmann, S.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

The first result of the pp2pp experiment at RHIC on elastic scattering of polarized protons at sqrt{s} = 200 GeV is reported here. The exponential slope parameter b of the diffractive peak of the elastic cross section in the t range 0.010 <= |t| <= 0.019 (GeV/c)^2 was measured to be b = 16.3 +- 1.6 (stat.) +- 0.9 (syst.) (GeV/c)^{-2} ., Comment: 9 pages 5 figures

Published
2003
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109. An Experimental Exploration of the QCD Phase Diagram: The Search for the Critical Point and the Onset of De-confinement

Author

Collaboration, STAR, Aggarwal, MM, Ahammed, Z, Alakhverdyants, AV, Alekseev, I, Anderson, BD, Arkhipkin, D, Averichev, GS, Balewski, J, Barnby, LS, Baumgart, S, Beavis, DR, Bellwied, R, Betancourt, MJ, Betts, RR, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, LC, Bonner, BE, Bouchet, J, Braidot, E, Brandin, AV, Bridgeman, A, Bruna, E, Bueltmann, S, Bunzarov, I, Burton, TP, Cai, XZ, Caines, H, CalderóndelaBarcaSánchez, M, Catu, O, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Cheng, J, Cherney, M, Chikanian, A, Choi, KE, Christie, W, Chung, P, Clarke, RF, Codrington, MJM, Corliss, R, Cramer, JG, Crawford, HJ, Das, D, Dash, S, DavilaLeyva, A, DeSilva, LC, Debbe, RR, Dedovich, TG, Derevschikov, AA, DerradideSouza, R, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Dunlop, JC, DuttaMazumdar, MR, Efimov, LG, Elhalhuli, E, Elnimr, M, Engelage, J, Eppley, G, Erazmus, B, Estienne, M, Eun, L, Evdokimov, O, Fachini, P, Fatemi, R, Fedorisin, J, Fersch, RG, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gangadharan, DR, Ganti, MS, Garcia, EJ, Solis, Geromitsos, A, Geurts, F, Ghazikhanian, V, Ghosh, P, Gorbunov, YN, Gordon, A, and Grebenyuk, O

Subjects
nucl-ex
Abstract

The QCD phase diagram lies at the heart of what the RHIC Physics Program isall about. While RHIC has been operating very successfully at or close to itsmaximum energy for almost a decade, it has become clear that this collider canalso be operated at lower energies down to 5 GeV without extensive upgrades. Anexploration of the full region of beam energies available at the RHIC facilityis imperative. The STAR detector, due to its large uniform acceptance andexcellent particle identification capabilities, is uniquely positioned to carryout this program in depth and detail. The first exploratory beam energy scan(BES) run at RHIC took place in 2010 (Run 10), since several STAR upgrades,most importantly a full barrel Time of Flight detector, are now completed whichadd new capabilities important for the interesting physics at BES energies. Inthis document we discuss current proposed measurements, with estimations of theaccuracy of the measurements given an assumed event count at each beam energy.

Published
2010

110. Search for e→τ charged lepton flavor violation at the EIC with the ECCE detector

Author

Zhang, J.-L., primary, Mantry, S., additional, Adkins, J.K., additional, Akiba, Y., additional, Albataineh, A., additional, Amaryan, M., additional, Arsene, I.C., additional, Gayoso, C. Ayerbe, additional, Bae, J., additional, Bai, X., additional, Baker, M.D., additional, Bashkanov, M., additional, Bellwied, R., additional, Benmokhtar, F., additional, Berdnikov, V., additional, Bernauer, J.C., additional, Bock, F., additional, Boeglin, W., additional, Borysova, M., additional, Brash, E., additional, Brindza, P., additional, Briscoe, W.J., additional, Brooks, M., additional, Bueltmann, S., additional, Bukhari, M.H.S., additional, Bylinkin, A., additional, Capobianco, R., additional, Chang, W.-C., additional, Cheon, Y., additional, Chen, K., additional, Chen, K.-F., additional, Cheng, K.-Y., additional, Chiu, M., additional, Chujo, T., additional, Citron, Z., additional, Cline, E., additional, Cohen, E., additional, Cormier, T., additional, Corrales Morales, Y., additional, Cotton, C., additional, Crafts, J., additional, Crawford, C., additional, Creekmore, S., additional, Cuevas, C., additional, Cunningham, J., additional, David, G., additional, Dean, C.T., additional, Demarteau, M., additional, Diehl, S., additional, Doshita, N., additional, Dupré, R., additional, Durham, J.M., additional, Dzhygadlo, R., additional, Ehlers, R., additional, El Fassi, L., additional, Emmert, A., additional, Ent, R., additional, Fanelli, C., additional, Fatemi, R., additional, Fegan, S., additional, Finger, M., additional, Frantz, J., additional, Friedman, M., additional, Friscic, I., additional, Gangadharan, D., additional, Gardner, S., additional, Gates, K., additional, Geurts, F., additional, Gilman, R., additional, Glazier, D., additional, Glimos, E., additional, Goto, Y., additional, Grau, N., additional, Greene, S.V., additional, Guo, A.Q., additional, Guo, L., additional, Ha, S.K., additional, Haggerty, J., additional, Hayward, T., additional, He, X., additional, Hen, O., additional, Higinbotham, D.W., additional, Hoballah, M., additional, Horn, T., additional, Hoghmrtsyan, A., additional, Hsu, P.-h.J., additional, Huang, J., additional, Huber, G., additional, Hutson, A., additional, Hwang, K.Y., additional, Hyde, C.E., additional, Inaba, M., additional, Iwata, T., additional, Jo, H.S., additional, Joo, K., additional, Kalantarians, N., additional, Kalicy, G., additional, Kawade, K., additional, Kay, S.J.D., additional, Kim, A., additional, Kim, B., additional, Kim, C., additional, Kim, M., additional, Kim, Y., additional, Kistenev, E., additional, Klimenko, V., additional, Ko, S.H., additional, Korover, I., additional, Korsch, W., additional, Krintiras, G., additional, Kuhn, S., additional, Kuo, C.-M., additional, Kutz, T., additional, Lajoie, J., additional, Lawrence, D., additional, Lebedev, S., additional, Lee, H., additional, Lee, J.S.H., additional, Lee, S.W., additional, Lee, Y.-J., additional, Li, W., additional, Li, W.B., additional, Li, X., additional, Liang, Y.T., additional, Lim, S., additional, Lin, C.-H., additional, Lin, D.X., additional, Liu, K., additional, Liu, M.X., additional, Livingston, K., additional, Liyanage, N., additional, Llope, W.J., additional, Loizides, C., additional, Long, E., additional, Lu, R.-S., additional, Lu, Z., additional, Lynch, W., additional, Marchand, D., additional, Marcisovsky, M., additional, Markert, C., additional, Markowitz, P., additional, Marukyan, H., additional, McGaughey, P., additional, Mihovilovic, M., additional, Milner, R.G., additional, Milov, A., additional, Miyachi, Y., additional, Mkrtchyan, A., additional, Mkrtchyan, H., additional, Monaghan, P., additional, Montgomery, R., additional, Morrison, D., additional, Movsisyan, A., additional, Munoz Camacho, C., additional, Murray, M., additional, Nagai, K., additional, Nagle, J., additional, Nakagawa, I., additional, Nattrass, C., additional, Nguyen, D., additional, Niccolai, S., additional, Nouicer, R., additional, Nukazuka, G., additional, Nycz, M., additional, Okorokov, V.A., additional, Orešić, S., additional, Osborn, J.D., additional, O’Shaughnessy, C., additional, Paganis, S., additional, Papandreou, Z., additional, Pate, S.F., additional, Patel, M., additional, Paus, C., additional, Penman, G., additional, Perdekamp, M.G., additional, Perepelitsa, D.V., additional, Periera da Costa, H., additional, Peters, K., additional, Phelps, W., additional, Piasetzky, E., additional, Pinkenburg, C., additional, Prochazka, I., additional, Protzman, T., additional, Purschke, M.L., additional, Putschke, J., additional, Pybus, J.R., additional, Rajput-Ghoshal, R., additional, Rasson, J., additional, Raue, B., additional, Read, K.F., additional, Røed, K., additional, Reed, R., additional, Reinhold, J., additional, Renner, E.L., additional, Richards, J., additional, Riedl, C., additional, Rinn, T., additional, Roche, J., additional, Roland, G.M., additional, Ron, G., additional, Rosati, M., additional, Royon, C., additional, Ryu, J., additional, Salur, S., additional, Santiesteban, N., additional, Santos, R., additional, Sarsour, M., additional, Schambach, J., additional, Schmidt, A., additional, Schmidt, N., additional, Schwarz, C., additional, Schwiening, J., additional, Seidl, R., additional, Sickles, A., additional, Simmerling, P., additional, Sirca, S., additional, Sharma, D., additional, Shi, Z., additional, Shibata, T.-A., additional, Shih, C.-W., additional, Shimizu, S., additional, Shrestha, U., additional, Slifer, K., additional, Smith, K., additional, Sokhan, D., additional, Soltz, R., additional, Sondheim, W., additional, Song, J., additional, Strakovsky, I.I., additional, Steinberg, P., additional, Stepanov, P., additional, Stevens, J., additional, Strube, J., additional, Sun, P., additional, Sun, X., additional, Suresh, K., additional, Tadevosyan, V., additional, Tang, W.-C., additional, Tapia Araya, S., additional, Tarafdar, S., additional, Teodorescu, L., additional, Thomas, D., additional, Timmins, A., additional, Tomasek, L., additional, Trotta, N., additional, Trotta, R., additional, Tveter, T.S., additional, Umaka, E., additional, Usman, A., additional, van Hecke, H.W., additional, Van Hulse, C., additional, Velkovska, J., additional, Voutier, E., additional, Wang, P.K., additional, Wang, Q., additional, Wang, Y., additional, Watts, D.P., additional, Wickramaarachchi, N., additional, Weinstein, L., additional, Williams, M., additional, Wong, C.-P., additional, Wood, L., additional, Wood, M.H., additional, Woody, C., additional, Wyslouch, B., additional, Xiao, Z., additional, Yamazaki, Y., additional, Yang, Y., additional, Ye, Z., additional, Yoo, H.D., additional, Yurov, M., additional, Zachariou, N., additional, Zajc, W.A., additional, Zha, W., additional, Zhang, J.-X., additional, Zhang, Y., additional, Zhao, Y.-X., additional, Zheng, X., additional, and Zhuang, P., additional

Published
2023
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111. Searching for prompt and long-lived dark photons in electroproduced e+e− pairs with the heavy photon search experiment at JLab

Author

Adrian, P. H., primary, Baltzell, N. A., additional, Battaglieri, M., additional, Bondí, M., additional, Boyarinov, S., additional, Bravo, C., additional, Bueltmann, S., additional, Butti, P., additional, Burkert, V. D., additional, Calvo, D., additional, Cao, T., additional, Carpinelli, M., additional, Celentano, A., additional, Charles, G., additional, Colaneri, L., additional, Cooper, W., additional, Crowe, B., additional, Cuevas, C., additional, D’Angelo, A., additional, Dashyan, N., additional, De Napoli, M., additional, De Vita, R., additional, Deur, A., additional, Diamond, M., additional, Dupre, R., additional, Egiyan, H., additional, Elouadrhiri, L., additional, Essig, R., additional, Fadeyev, V., additional, Field, C., additional, Filippi, A., additional, Freyberger, A., additional, Garçon, M., additional, Gevorgyan, N., additional, Girod, F. X., additional, Graf, N., additional, Graham, M., additional, Griffioen, K. A., additional, Grillo, A., additional, Guidal, M., additional, Herbst, R., additional, Holtrop, M., additional, Jaros, J., additional, Johnson, R. P., additional, Kalicy, G., additional, Khandaker, M., additional, Kubarovsky, V., additional, Leonora, E., additional, Livingston, K., additional, Marsicano, L., additional, Maruyama, T., additional, McCarty, S., additional, McCormick, J., additional, McKinnon, B., additional, Moffeit, K., additional, Moreno, O., additional, Munoz Camacho, C., additional, Nelson, T., additional, Niccolai, S., additional, Odian, A., additional, Oriunno, M., additional, Osipenko, M., additional, Paremuzyan, R., additional, Paul, S., additional, Randazzo, N., additional, Raydo, B., additional, Reese, B., additional, Rizzo, A., additional, Schuster, P., additional, Sharabian, Y. G., additional, Simi, G., additional, Simonyan, A., additional, Sipala, V., additional, Spellman, A., additional, Sokhan, D., additional, Solt, M., additional, Stepanyan, S., additional, Szumila-Vance, H., additional, Toro, N., additional, Uemura, S., additional, Ungaro, M., additional, Voskanyan, H., additional, Weinstein, L. B., additional, and Wojtsekhowski, B., additional

Published
2023
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112. Hadronic resonance production in d+Au collisions at sNN=200 GeV measured at the BNL Relativistic Heavy Ion Collider

Author

Abelev, BI, Aggarwal, MM, Ahammed, Z, Anderson, BD, Arkhipkin, D, Averichev, GS, Bai, Y, Balewski, J, Barannikova, O, Barnby, LS, Baudot, J, Baumgart, S, Beavis, DR, Bellwied, R, Benedosso, F, Betts, RR, Bhardwaj, S, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, LC, Bombara, M, Bonner, BE, Botje, M, Bouchet, J, Braidot, E, Brandin, AV, Bruna, Bueltmann, S, Burton, TP, Bystersky, M, Cai, XZ, Caines, H, De La Barca Sánchez, MC, Callner, J, Catu, O, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopdhyay, S, Chen, HF, Chen, JH, Chen, JY, Cheng, J, Cherney, M, Chikanian, A, Choi, KE, Christie, W, Chung, SU, Clarke, RF, Codrington, MJM, Coffin, JP, Cormier, TM, Cosentino, MR, Cramer, JG, Crawford, HJ, Das, D, Dash, S, Daugherity, M, De Silva, C, Dedovich, TG, Dephillips, M, Derevschikov, AA, De Souza, RD, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Du, F, Dunlop, JC, Mazumdar, MRD, Edwards, WR, Efimov, LG, Elhalhuli, E, Elnimr, M, Emelianov, V, Engelage, J, Eppley, G, Erazmus, B, Estienne, M, Eun, L, Fachini, P, Fatemi, R, Fedorisin, J, Feng, A, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gaillard, L, Gangaharan, DR, and Ganti, MS

Subjects
nucl-ex, Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We present the first measurements of the ρ(770)0,K*(892), Δ(1232)++,Σ(1385), and Λ(1520) resonances in d+Au collisions at sNN=200 GeV, reconstructed via their hadronic decay channels using the STAR detector (the solenoidal tracker at the BNL Relativistic Heavy Ion Collider). The masses and widths of these resonances are studied as a function of transverse momentum pT. We observe that the resonance spectra follow a generalized scaling law with the transverse mass mT. The pT of resonances in minimum bias collisions are compared with the pT of π,K, and p̄. The ρ0/π-,K*/K-,Δ++/p,Σ(1385)/Λ, and Λ(1520)/Λ ratios in d+Au collisions are compared with the measurements in minimum bias p+p interactions, where we observe that both measurements are comparable. The nuclear modification factors (RdAu) of the ρ0,K*, and Σ* scale with the number of binary collisions (Nbin) for pT 1.2 GeV/c. © 2008 The American Physical Society.

Published
2008

113. Spin alignment measurements of the K*0(892) and phi(1020) vector mesons in heavy ion collisions at sqrt sNN = 200 GeV

Author

Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Beavis, D. R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Blyth, S.-L., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Braidot, E., Brandin, V., Bueltmann, S., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sanchez, M. Calderon de la Barca, Callner, J., Catu, O., Cebra, D., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., Moura, M. M. de, Dedovich, T. G., DePhillips, M., Derevschikov, A. A., Souza, R. Derradi de, Didenko, L., Dietel, T., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunlop, J. C., Mazumdar, M. R. Dutta, Edwards, W. R., Efimov, L. G., Elhalhuli, E., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C. A., Gaillard, L., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., and Ghosh, P.

Published
2008

114. Enhanced strange baryon production in Au + Au collisions compared to p + p at sqrt sNN = 200 GeV

Author

Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Beavis, D. R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Blyth, S.-L., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Braidot, E., Brandin, V., Bueltmann, S., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sanchez, M. Calderon de la Barca, Callner, J., Catu, O., Cebra, D., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., Moura, M. M. de, Dedovich, T. G., DePhillips, M., Derevschikov, A. A., Souza, R. Derradi de, Didenko, L., Dietel, T., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunlop, J. C., Mazumdar, M. R. Dutta, Edwards, W. R., Efimov, L. G., Elhalhuli, E., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C. A., Gaillard, L., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., and Ghosh, P.

Abstract

We report on the observed differences in production rates of strange and multistrange baryons in Au+Au collisions at sqrt sNN = 200 GeV compared to p+p interactions at the same energy. The strange baryon yields in Au+Au collisions, when scaled down by the number of participating nucleons, are enhanced relative to those measured in p+p reactions. The enhancement observed increases with the strangeness content of the baryon, and it increases for all strange baryons with collision centrality. The enhancement is qualitatively similar to that observed at the lower collision energy sqrt sNN = 17.3 GeV. The previous observations are for the bulk production, while at intermediate pT , 1 < pT < 4 GeV/c, the strange baryons even exceed binary scaling from p+p yields.

Published
2008

115. Centrality dependence of charged hadron and strange hadron elliptic flow from sqrt sNN = 200 GeV Au + Au collisions

Author

Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Beavis, D. R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Blyth, S.-L., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Braidot, E., Brandin, V., Bueltmann, S., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sanchez, M. Calderon de la Barca, Callner, J., Catu, O., Cebra, D., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., Moura, M. M. de, Dedovich, T. G., DePhillips, M., Derevschikov, A. A., Souza, R. Derradi de, Didenko, L., Dietel, T., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunlop, J. C., Mazumdar, M. R. Dutta, Edwards, W. R., Efimov, L. G., Elhalhuli, E., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C. A., Gaillard, L., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., and Ghosh, P.

Published
2008

116. Forward Lambda Production and Nuclear Stopping Power in d + Au Collisions at sqrt sNN = 200 GeV

Author

Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Beavis, D. R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Blyth, S.-L., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Braidot, E., Brandin, V., Bueltmann, S., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sanchez, M. Calderon de la Barca, Callner, J., Catu, O., Cebra, D., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., Moura, M. M. de, Dedovich, T. G., DePhillips, M., Derevschikov, A. A., Souza, R. Derradi de, Didenko, L., Dietel, T., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunlop, J. C., Mazumdar, M. R. Dutta, Edwards, W. R., Efimov, L. G., Elhalhuli, E., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C. A., Gaillard, L., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., and Ghosh, P.

Abstract

We report the measurement of Gamma and Gamma bar yields and inverse slope parameters in d+Au collisions at sqrt sNN = 200 GeV at forward and backward rapidities (y = +-2.75), using data from the STAR forward time projection chambers. The contributions of different processes to baryon transport and particle production are probed exploiting the inherent asymmetry of the d+Au system. Comparisons to model calculations show that baryon transport on the deuteron side is consistent with multiple collisions of the deuteron nucleons with gold participants. On the gold side, HIJING-based models without a hadronic rescattering phase do not describe themeasured particle yields, while models that include target remnants or hadronic rescattering do. The multichain model can provide a good description of the net baryon density in d+Au collisions at energies currently available at the BNLRelativistic Heavy Ion Collider, and the derived parameters of the model agree with those from nuclear collisions at lower energies.

Published
2007

117. Rapidity and species dependence of particle production at large transverse momentum for d + Au collisions at sqrt sNN = 200 GeV

Author

Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Bai, Y., Balewski, J., Barannikova, O., Barnby, L. S., Baudot, J., Baumgart, S., Beavis, D. R., Benedosso, F., Betts, R. R., Bhardwaj, S., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L. C., Blyth, S.-L., Bombara, M., Bonner, B. E., Botje, M., Bouchet, J., Braidot, E., Brandin, V., Bueltmann, S., Burton, T. P., Bystersky, M., Cai, X. Z., Caines, H., Sanchez, M. Calderon de la Barca, Callner, J., Catu, O., Cebra, D., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, S. U., Clarke, R. F., Codrington, M. J. M., Coffin, J. P., Cormier, T. M., Cosentino, M. R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Daugherity, M., Moura, M. M. de, Dedovich, T. G., DePhillips, M., Derevschikov, A. A., Souza, R. Derradi de, Didenko, L., Dietel, T., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Du, F., Dunlop, J. C., Mazumdar, M. R. Dutta, Edwards, W. R., Efimov, L. G., Elhalhuli, E., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C. A., Gaillard, L., Ganti, M. S., Garcia-Solis, E., Ghazikhanian, V., and Ghosh, P.

Published
2007

118. A multidimensional study of the structure function ratio σLT′/σ0 from hard exclusive π+ electro-production off protons in the GPD regime

Author

Diehl, S., primary, Kim, A., additional, Joo, K., additional, Achenbach, P., additional, Akbar, Z., additional, Amaryan, M.J., additional, Atac, H., additional, Avagyan, H., additional, Ayerbe Gayoso, C., additional, Baashen, L., additional, Barion, L., additional, Bashkanov, M., additional, Battaglieri, M., additional, Bedlinskiy, I., additional, Benkel, B., additional, Benmokhtar, F., additional, Bianconi, A., additional, Biselli, A.S., additional, Bondi, M., additional, Booth, W.A., additional, Bossù, F., additional, Boiarinov, S., additional, Brinkmann, K.-Th., additional, Briscoe, W.J., additional, Bueltmann, S., additional, Bulumulla, D., additional, Burkert, V.D., additional, Carman, D.S., additional, Celentano, A., additional, Chatagnon, P., additional, Chesnokov, V., additional, Chetry, T., additional, Ciullo, G., additional, Clash, G., additional, Cole, P.L., additional, Contalbrigo, M., additional, Costantini, G., additional, D'Angelo, A., additional, Dashyan, N., additional, De Vita, R., additional, Defurne, M., additional, Deur, A., additional, Djalali, C., additional, Dupre, R., additional, Egiyan, H., additional, Ehrhart, M., additional, El Alaoui, A., additional, El Fassi, L., additional, Elouadrhiri, L., additional, Fegan, S., additional, Filippi, A., additional, Gavalian, G., additional, Ghandilyan, Y., additional, Gilfoyle, G.P., additional, Glazier, D.I., additional, Golubenko, A.A., additional, Gosta, G., additional, Gothe, R.W., additional, Gotra, Y., additional, Griffioen, K.A., additional, Guidal, M., additional, Hafidi, K., additional, Hakobyan, H., additional, Hattawy, M., additional, Hayward, T.B., additional, Heddle, D., additional, Hobart, A., additional, Holtrop, M., additional, Ilieva, Y., additional, Ireland, D.G., additional, Isupov, E.L., additional, Jo, H.S., additional, Khachatryan, M., additional, Khanal, A., additional, Kim, W., additional, Kripko, A., additional, Kubarovsky, V., additional, Lagerquist, V., additional, Laget, J.-M., additional, Lanza, L., additional, Leali, M., additional, Lee, S., additional, Lenisa, P., additional, Li, X., additional, Livingston, K., additional, .J .D. MacGregor, I., additional, Marchand, D., additional, Mascagna, V., additional, McKinnon, B., additional, Meziani, Z.E., additional, Migliorati, S., additional, Mineeva, T., additional, Mirazita, M., additional, Mokeev, V., additional, Molina, E., additional, Montgomery, R.A., additional, Munoz Camacho, C., additional, Nadel-Turonski, P., additional, Naidoo, P., additional, Neupane, K., additional, Niccolai, S., additional, Nicol, M., additional, Niculescu, G., additional, Osipenko, M., additional, Ouillon, M., additional, Pandey, P., additional, Paolone, M., additional, Pappalardo, L.L., additional, Paremuzyan, R., additional, Pasyuk, E., additional, Paul, S.J., additional, Phelps, W., additional, Pilleux, N., additional, Pokhrel, M., additional, Poudel, J., additional, Price, J.W., additional, Prok, Y., additional, Reed, T., additional, Richards, J., additional, Ripani, M., additional, Ritman, J., additional, Rossi, P., additional, Sabatié, F., additional, Salgado, C., additional, Schadmand, S., additional, Schmidt, A., additional, Sharabian, Y., additional, Shirokov, E.V., additional, Shrestha, U., additional, Simmerling, P., additional, Sokhan, D., additional, Sparveris, N., additional, Spreafico, M., additional, Stepanyan, S., additional, Strakovsky, I.I., additional, Strauch, S., additional, Tan, J.A., additional, Trotta, N., additional, Turisini, M., additional, Tyson, R., additional, Ungaro, M., additional, Vallarino, S., additional, Venturelli, L., additional, Voskanyan, H., additional, Voutier, E., additional, Watts, D.P., additional, Wei, X., additional, Williams, R., additional, Wishart, R., additional, Wood, M.H., additional, Zachariou, N., additional, Zhang, J., additional, Zhao, Z.W., additional, and Zurek, M., additional

Published
2023
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119. Exclusive J/ψ detection and physics with ECCE

Author

Li, X., primary, Adkins, J.K., additional, Akiba, Y., additional, Albataineh, A., additional, Amaryan, M., additional, Arsene, I.C., additional, Ayerbe Gayoso, C., additional, Bae, J., additional, Bai, X., additional, Baker, M.D., additional, Bashkanov, M., additional, Bellwied, R., additional, Benmokhtar, F., additional, Berdnikov, V., additional, Bernauer, J.C., additional, Bock, F., additional, Boeglin, W., additional, Borysova, M., additional, Brash, E., additional, Brindza, P., additional, Briscoe, W.J., additional, Brooks, M., additional, Bueltmann, S., additional, Bukhari, M.H.S., additional, Bylinkin, A., additional, Capobianco, R., additional, Chang, W.-C., additional, Cheon, Y., additional, Chen, K., additional, Chen, K.-F., additional, Cheng, K.-Y., additional, Chiu, M., additional, Chujo, T., additional, Citron, Z., additional, Cline, E., additional, Cohen, E., additional, Cormier, T., additional, Corrales Morales, Y., additional, Cotton, C., additional, Crafts, J., additional, Crawford, C., additional, Creekmore, S., additional, Cuevas, C., additional, Cunningham, J., additional, David, G., additional, Dean, C.T., additional, Demarteau, M., additional, Diehl, S., additional, Doshita, N., additional, Dupré, R., additional, Durham, J.M., additional, Dzhygadlo, R., additional, Ehlers, R., additional, El Fassi, L., additional, Emmert, A., additional, Ent, R., additional, Fanelli, C., additional, Fatemi, R., additional, Fegan, S., additional, Finger, M., additional, Frantz, J., additional, Friedman, M., additional, Friscic, I., additional, Gangadharan, D., additional, Gardner, S., additional, Gates, K., additional, Geurts, F., additional, Gilman, R., additional, Glazier, D., additional, Glimos, E., additional, Goto, Y., additional, Grau, N., additional, Greene, S.V., additional, Guo, A.Q., additional, Guo, L., additional, Ha, S.K., additional, Haggerty, J., additional, Hayward, T., additional, He, X., additional, Hen, O., additional, Higinbotham, D.W., additional, Hoballah, M., additional, Horn, T., additional, Hoghmrtsyan, A., additional, Hsu, P.-h.J., additional, Huang, J., additional, Huber, G., additional, Hutson, A., additional, Hwang, K.Y., additional, Hyde, C.E., additional, Inaba, M., additional, Iwata, T., additional, Jo, H.S., additional, Joo, K., additional, Kalantarians, N., additional, Kalicy, G., additional, Kawade, K., additional, Kay, S.J.D., additional, Kim, A., additional, Kim, B., additional, Kim, C., additional, Kim, M., additional, Kim, Y., additional, Kistenev, E., additional, Klimenko, V., additional, Ko, S.H., additional, Korover, I., additional, Korsch, W., additional, Krintiras, G., additional, Kuhn, S., additional, Kuo, C.-M., additional, Kutz, T., additional, Lajoie, J., additional, Lawrence, D., additional, Lebedev, S., additional, Lee, H., additional, Lee, J.S.H., additional, Lee, S.W., additional, Lee, Y.-J., additional, Li, W., additional, Li, W.B., additional, Li, X., additional, Liang, Y.T., additional, Lim, S., additional, Lin, C.-H., additional, Lin, D.X., additional, Liu, K., additional, Liu, M.X., additional, Livingston, K., additional, Liyanage, N., additional, Llope, W.J., additional, Loizides, C., additional, Long, E., additional, Lu, R.-S., additional, Lu, Z., additional, Lynch, W., additional, Mantry, S., additional, Marchand, D., additional, Marcisovsky, M., additional, Markert, C., additional, Markowitz, P., additional, Marukyan, H., additional, McGaughey, P., additional, Mihovilovic, M., additional, Milner, R.G., additional, Milov, A., additional, Miyachi, Y., additional, Mkrtchyan, A., additional, Monaghan, P., additional, Montgomery, R., additional, Morrison, D., additional, Movsisyan, A., additional, Mkrtchyan, H., additional, Munoz Camacho, C., additional, Murray, M., additional, Nagai, K., additional, Nagle, J., additional, Nakagawa, I., additional, Nattrass, C., additional, Nguyen, D., additional, Niccolai, S., additional, Nouicer, R., additional, Nukazuka, G., additional, Nycz, M., additional, Okorokov, V.A., additional, Orešić, S., additional, Osborn, J.D., additional, O’Shaughnessy, C., additional, Paganis, S., additional, Papandreou, Z., additional, Pate, S.F., additional, Patel, M., additional, Paus, C., additional, Penman, G., additional, Perdekamp, M.G., additional, Perepelitsa, D.V., additional, Periera da Costa, H., additional, Peters, K., additional, Phelps, W., additional, Piasetzky, E., additional, Pinkenburg, C., additional, Prochazka, I., additional, Protzman, T., additional, Purschke, M.L., additional, Putschke, J., additional, Pybus, J.R., additional, Rajput-Ghoshal, R., additional, Rasson, J., additional, Raue, B., additional, Read, K.F., additional, Røed, K., additional, Reed, R., additional, Reinhold, J., additional, Renner, E.L., additional, Richards, J., additional, Riedl, C., additional, Rinn, T., additional, Roche, J., additional, Roland, G.M., additional, Ron, G., additional, Rosati, M., additional, Royon, C., additional, Ryu, J., additional, Salur, S., additional, Santiesteban, N., additional, Santos, R., additional, Sarsour, M., additional, Schambach, J., additional, Schmidt, A., additional, Schmidt, N., additional, Schwarz, C., additional, Schwiening, J., additional, Seidl, R., additional, Sickles, A., additional, Simmerling, P., additional, Sirca, S., additional, Sharma, D., additional, Shi, Z., additional, Shibata, T.-A., additional, Shih, C.-W., additional, Shimizu, S., additional, Shrestha, U., additional, Slifer, K., additional, Smith, K., additional, Sokhan, D., additional, Soltz, R., additional, Sondheim, W., additional, Song, J., additional, Strakovsky, I.I., additional, Steinberg, P., additional, Stepanov, P., additional, Stevens, J., additional, Strube, J., additional, Sun, P., additional, Sun, X., additional, Suresh, K., additional, Tadevosyan, V., additional, Tang, W.-C., additional, Tapia Araya, S., additional, Tarafdar, S., additional, Teodorescu, L., additional, Thomas, D., additional, Timmins, A., additional, Tomasek, L., additional, Trotta, N., additional, Trotta, R., additional, Tveter, T.S., additional, Umaka, E., additional, Usman, A., additional, van Hecke, H.W., additional, Van Hulse, C., additional, Velkovska, J., additional, Voutier, E., additional, Wang, P.K., additional, Wang, Q., additional, Wang, Y., additional, Watts, D.P., additional, Wickramaarachchi, N., additional, Weinstein, L., additional, Williams, M., additional, Wong, C.-P., additional, Wood, L., additional, Wood, M.H., additional, Woody, C., additional, Wyslouch, B., additional, Xiao, Z., additional, Yamazaki, Y., additional, Yang, Y., additional, Ye, Z., additional, Yoo, H.D., additional, Yurov, M., additional, Zachariou, N., additional, Zajc, W.A., additional, Zha, W., additional, Zhang, J.-L., additional, Zhang, J.-X., additional, Zhang, Y., additional, Zhao, Y.-X., additional, Zheng, X., additional, and Zhuang, P., additional

Published
2023
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120. A multidimensional study of the structure function ratio From Hard Exclusive electro-production off protons in the GPD regime

Author

Diehl, S., Kim, A., Joo, K., Achenbach, P., Akbar, Z., Amaryan, M.J., Atac, H., Avagyan, H., Ayerbe Gayoso, C., Baashen, L., Barion, L., Bashkanov, M., Battaglieri, M., Bedlinskiy, I., Benkel, B., Benmokhtar, F., Bianconi, A., Biselli, A.S., Bondi, M., Booth, W.A., Bossù, F., Boiarinov, S., Brinkmann, K.-Th., Briscoe, W.J., Bueltmann, S., Bulumulla, D., Burkert, V.D., Carman, D.S., Celentano, A., Chatagnon, P., Chesnokov, V., Chetry, T., Ciullo, G., Clash, G., Cole, P.L., Contalbrigo, M., Costantini, G., D'Angelo, A., Dashyan, N., De Vita, R., Defurne, M., Deur, A., Djalali, C., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Fegan, S., Filippi, A., Gavalian, G., Ghandilyan, Y., Gilfoyle, G.P., Glazier, D.I., Golubenko, A.A., Gosta, G., Gothe, R.W., Gotra, Y., Griffioen, K.A., Guidal, M., Hafidi, K., Hakobyan, H., Hattawy, M., Hayward, T.B., Heddle, D., Hobart, A., Holtrop, M., Ilieva, Y., Ireland, D.G., Isupov, E.L., Jo, H.S., Khachatryan, M., Khanal, A., Kim, W., Kripko, A., Kubarovsky, V., Lagerquist, V., Laget, J.M., Lanza, L., Leali, M., Lee, S., Lenisa, P., Li, X., Livingston, K., J .D. MacGregor, I., Marchand, D., Mascagna, V., McKinnon, B., Meziani, Z.E., Migliorati, S., Mineeva, T., Mirazita, M., Mokeev, V., Molina, E., Montgomery, R.A., Munoz Camacho, C., Nadel-Turonski, P., Naidoo, P., Neupane, K., Niccolai, S., Nicol, M., Niculescu, G., Osipenko, M., Ouillon, M., Pandey, P., Paolone, M., Pappalardo, L.L., Paremuzyan, R., Pasyuk, E., Paul, S.J., Phelps, W., Pilleux, N., Pokhrel, M., Poudel, J., Price, J.W., Prok, Y., Reed, T., Richards, J., Ripani, M., Ritman, J., Rossi, P., Sabatié, F., Salgado, C., Schadmand, S., Schmidt, A., Sharabian, Y., Shirokov, E.V., Shrestha, U., Simmerling, P., Sokhan, D., Sparveris, N., Spreafico, M., Stepanyan, S., Strakovsky, I.I., Strauch, S., Tan, J.A., Trotta, N., Turisini, M., Tyson, R., Ungaro, M., Vallarino, S., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D.P., Wei, X., Williams, R., Wishart, R., Wood, M.H., Zachariou, N., Zhang, J., Zhao, Z.W., and Zurek, M.

Abstract

A multidimensional extraction of the structure function ratio σLT′/σ0 from the hard exclusive e→p→e′nπ+ reaction above the resonance region has been performed. The study was done based on beam-spin asymmetry measurements using a 10.6 GeV incident electron beam on a liquid-hydrogen target and the CLAS12 spectrometer at Jefferson Lab. The measurements focus on the very forward regime (t/Q2 ≪ 1) with a wide kinematic range of xB in the valence regime (0.17 < xB < 0.55), and virtualities Q2 ranging from 1.5 GeV$^{2}$ up to 6 GeV$^{2}$. The results and their comparison to theoretical models based on Generalized Parton Distributions demonstrate the sensitivity to chiral-odd GPDs and the directly related tensor charge of the nucleon. In addition, the data is compared to an extension of a Regge formalism at high photon virtualities. It was found that the Regge model provides a better description at low Q2, while the GPD model is more appropriate at high Q2.

Published
2023

121. The Heavy Photon Search test detector

Author

Battaglieri, M., Boyarinov, S., Bueltmann, S., Burkert, V., Celentano, A., Charles, G., Cooper, W., Cuevas, C., Dashyan, N., DeVita, R., Desnault, C., Deur, A., Egiyan, H., Elouadrhiri, L., Essig, R., Fadeyev, V., Field, C., Freyberger, A., Gershtein, Y., Gevorgyan, N., Girod, F.-X., Graf, N., Graham, M., Griffioen, K., Grillo, A., Guidal, M., Haller, G., Hansson Adrian, P., Herbst, R., Holtrop, M., Jaros, J., Kaneta, S., Khandaker, M., Kubarovsky, A., Kubarovsky, V., Maruyama, T., McCormick, J., Moffeit, K., Moreno, O., Neal, H., Nelson, T., Niccolai, S., Odian, A., Oriunno, M., Paremuzyan, R., Partridge, R., Phillips, S.K., Rauly, E., Raydo, B., Reichert, J., Rindel, E., Rosier, P., Salgado, C., Schuster, P., Sharabian, Y., Sokhan, D., Stepanyan, S., Toro, N., Uemura, S., Ungaro, M., Voskanyan, H., Walz, D., Weinstein, L.B., and Wojtsekhowski, B.

Published
2015
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122. First CLAS12 Measurement of Deeply Virtual Compton Scattering Beam-Spin Asymmetries in the Extended Valence Region

Author

Christiaens, G., Defurne, M., Sokhan, D., Achenbach, P., Akbar, Z., Amaryan, M. J., Atac, H., Avakian, H., Gayoso, C. Ayerbe, Baashen, L., Baltzell, N. A., Barion, L., Bashkanov, M., Battaglieri, M., Bedlinskiy, I., Benkel, B., Benmokhtar, F., Bianconi, A., Biselli, A. S., Bondi, M., Booth, W. A., Bossù, F., Boiarinov, S., Brinkmann, K.-Th., Briscoe, W. J., Bueltmann, S., Bulumulla, D., Burkert, V. D., Cao, T., Carman, D. S., Carvajal, J. C., Celentano, A., Chatagnon, P., Chesnokov, V., Chetry, T., Ciullo, G., Clash, G., Cole, P. L., Contalbrigo, M., Costantini, G., D’Angelo, A., Dashyan, N., De Vita, R., Deur, A., Diehl, S., Dilks, C., Djalali, C., Dupre, R., Egiyan, H., Ehrhart, M., Alaoui, A. El, Fassi, L. El, Elouadrhiri, L., Fegan, S., Filippi, A., Gates, K., Gavalian, G., Ghandilyan, Y., Gilfoyle, G. P., Girod, F. X., Glazier, D. I., Golubenko, A. A., Gosta, G., Gothe, R. W., Gotra, Y., Griffioen, K. A., Guidal, M., Hafidi, K., Hakobyan, H., Hattawy, M., Hauenstein, F., Hayward, T. B., Heddle, D., Hobart, A., Holmberg, D. E., Holtrop, M., Ilieva, Y., Ireland, D. G., Isupov, E. L., Jo, H. S., Keller, D., Khachatryan, M., Khanal, A., Kim, W., Kripko, A., Kubarovsky, V., Kuhn, S. E., Lagerquist, V., Lanza, L., Kabir, M. L., Leali, M., Lee, S., Lenisa, P., Li, X., Livingston, K., MacGregor, I. J. D., Marchand, D., Mascagna, V., Matousek, G., McKinnon, B., McLauchlin, C., Meziani, Z. E., Migliorati, S., Milner, R. G., Mineeva, T., Mirazita, M., Mokeev, V., Molina, E., Camacho, C. Munoz, Nadel-Turonski, P., Naidoo, P., Neupane, K., Niccolai, S., Nicol, M., Niculescu, G., Osipenko, M., Ouillon, M., Pandey, P., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Paul, S. J., Phelps, W., Pilleux, N., Pokhrel, M., Poudel, J., Price, J. W., Prok, Y., Radic, A., Ramasubramanian, N., Raue, B. A., Reed, Trevor, Richards, J., Ripani, M., Ritman, J., Rossi, P., Sabatié, F., Salgado, C., Schadmand, S., Schmidt, A., Scott, M. B. C., Sharabian, Y. G., Shirokov, E. V., Shrestha, U., Simmerling, P., Sparveris, N., Spreafico, M., Stepanyan, S., Strakovsky, I. I., Strauch, S., Tan, J. A., Trotta, N., Turisini, M., Tyson, R., Ungaro, M., Vallarino, S., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D. P., Wei, X., Williams, R., Wishart, R., Wood, M. H., Zachariou, N., Zhang, J., Zhao, Z. W., Ziegler, V., and Zurek, M.

Abstract

Deeply virtual Compton scattering (DVCS) allows one to probe generalized parton distributions describing the 3D structure of the nucleon. We report the first measurement of the DVCS beam-spin asymmetry using the CLAS12 spectrometer with a 10.2 and 10.6 GeV electron beam scattering from unpolarized protons. The results greatly extend the Q2 and Bjorken-x phase space beyond the existing data in the valence region and provide 1600 new data points measured with unprecedented statistical uncertainty, setting new, tight constraints for future phenomenological studies.

Published
2023

123. Exclusive π− electroproduction off the neutron in deuterium in the resonance region

Author

Tian, Y., Gothe, R. W., Mokeev, V. I., Hollis, G., Amaryan, M. J., Armstrong, W. R., Atac, H., Avakian, H., Barion, L., Battaglieri, M., Bedlinskiy, I., Benkel, B., Benmokhtar, F., Bianconi, A., Biondo, L., Biselli, A., Bossù, F., Boiarinov, S., Bondì, M., Brinkmann, K. T., Briscoe, W. J., Bueltmann, S., Bulumulla, D., Burkert, V. D., Capobianco, R., Carman, D. S., Carvajal, J. C., Celentano, A., Chesnokov, V., Chetry, T., Ciullo, G., Clash, G., Cole, P. L., Contalbrigo, M., Costantini, G., D'Angelo, A., Dashyan, N., De Vita, R., Defurne, M., Deur, A., Diehl, S., Djalali, C., Dupre, R., Egiyan, H., Alaoui, A. El, Fassi, L. El, Elouadrhiri, L., Eugenio, P., Fegan, S., Filippi, A., Gavalian, G., Gilfoyle, G. P., Girod, F. X., Golubenko, A. A., Gosta, G., Griffioen, K., Guidal, M., Hakobyan, H., Hattawy, M., Hayward, T. B., Hobart, A., Holtrop, M., Ilieva, Y., Ireland, D. G., Isupov, E. L., Jenkins, D., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khanal, A., Khandaker, M., Kim, A., Kim, W., Klein, F. J., Kripko, A., Kubarovsky, V., Lagerquist, V., Lanza, L., Leali, M., Lenisa, P., Livingston, K., MacGregor, I. . J . D., Marchand, D., Marsicano, L., Mascagna, V., McKinnon, B., Migliorati, S., Mineeva, T., Mirazita, M., Camacho, C. Munoz, Nadel-Turonski, P., Naidoo, P., Neupane, K., Newton, J., Niccolai, S., Nicol, M., Niculescu, G., Osipenko, M., Pandey, P., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Park, K., Pasyuk, E., Paul, S. J., Phelps, W., Pilleux, N., Počanić, D., Pogorelko, O., Poudel, J., Price, J. W., Prok, Y., Reed, T., Ripani, M., Ritman, J., Rizzo, A., Rosner, G., Sabatié, F., Salgado, C., Schadmand, S., Schmidt, A., Schumacher, R. A., Shirokov, E. V., Shrestha, U., Simmerling, P., Sokhan, D., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Strauch, S., Tyson, R., Ungaro, M., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D. P., Wei, K., Wei, X., Wood, M. H., Yale, B., Zachariou, N., Zhang, J., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and CLAS

Subjects
exclusive reaction, data analysis method, effect: off-shell, Settore FIS/04, FOS: Physical sciences, cross section: measured, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], final-state interaction, pi: electroproduction, hadron: final state, kinematics, CLAS, structure function, deuterium: target, n: target, Nuclear Experiment (nucl-ex), Nuclear Experiment, experimental results, Jefferson Lab, photon: virtual
Abstract

New results for the exclusive and quasi-free cross sections off neutrons bound in deuterium ${\gamma}_vn(p) \rightarrow p{\pi}^{-} (p)$ are presented over a wide final state hadron angle range with a kinematic coverage of the invariant mass ($W$) up to 1.825 GeV and the virtual photon four-momentum transfer squared ($Q^{2}$) from 0.4 to 1.0 GeV$^2$. The exclusive structure functions were extracted and their Legendre moments were obtained. Final-state-interaction contributions have been kinematically separated from the extracted quasi-free cross sections off bound neutrons solely based on the analysis of the experimental data. These new results will serve as long-awaited input for phenomenological analyses to extract the $Q^{2}$ evolution of previously unavailable $n \to N^{*}$ electroexcitation amplitudes and to improve state-of-the-art models of neutrino scattering off nuclei by augmenting the already available results from free protons., Comment: The author list has been updated

Published
2023

124. First observation of correlations between spin and transverse momenta in back-to-back dihadron production at CLAS12

Author

Avakian, H., Hayward, T. B., Kotzinian, A., Armstrong, W. R., Atac, H., Ayerbe Gayoso, C., Baashen, L., Baltzell, N. A., Barion, L., Bashkanov, M., Battaglieri, M., Bedlinskiy, I., Benkel, B., Benmokhtar, F., Bianconi, A., Biondo, L., Biselli, A. S., Bondi, M., Boiarinov, S., Bossù, F., Brinkman, K. T., Briscoe, W. J., Brooks, W. K., Bueltmann, S., Bulumulla, D., Burkert, V. D., Capobianco, R., Carman, D. S., Carvajal, J. C., Celentano, A., Chatagnon, P., Chesnokov, V., Chetry, T., Ciullo, G., Cole, P. L., Contalbrigo, M., Costantini, G., D’angelo, A., Dashyan, N., de Vita, R., Defurne, M., Deur, A., Diehl, S., Dilks, C., Djalali, C., Dupre, R., Egiyan, H., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Fegan, S., Filippi, A., Forest, T., Gates, K., Gavalian, G., Ghandilyan, Y., Glazier, D. I., Golubenko, A. A., Gosta, G., Gothe, R. W., Gotra, Y., Griffioen, K. A., Guidal, M., Hakobyan, H., Hattawy, M., Hauenstein, F., Heddle, D., Hobart, A., Holtrop, M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Isupov, E. L., Jo, H. S., Johnston, R., Joo, K., Kabir, M. L., Keller, D., Khachatryan, M., Khanal, A., Kim, A., Kim, W., Klimenko, V., Kripko, A., Kubarovsky, V., Kuhn, S. E., Lagerquist, V., Lanza, L., Leali, M., Lee, S., Lenisa, P., Li, X., Macgregor, I. J. D., Marchand, D., Mascagna, V., Mckinnon, B., Migliorati, S., Mineeva, T., Mirazita, M., Mokeev, V., Montgomery, R. A., Munoz Camacho, C., Nadel-Turonski, P., Naidoo, P., Neupane, K., Nguyen, D., Niccolai, S., Nicol, M., Niculescu, G., Osipenko, M., Pandey, P., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Paul, S. J., Phelps, W., Pilleux, N., Pogorelko, O., Pokhrel, M., Poudel, J., Price, J. W., Prok, Y., Raue, B. A., Reed, T., Richards, J., Ripani, M., Ritman, J., Rossi, P., Sabatié, F., Salgado, C., Schmidt, A., Sharabian, Y. G., Shirokov, E. V., Shrestha, U., Simmerling, P., Sokhan, D., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Strauch, S., Tan, J. A., Trotta, N., Tyson, R., Ungaro, M., Vallarino, S., Venturelli, L., Voskanyan, H., Vossen, A., Voutier, E., Watts, D. P., Wei, X., Wishart, R., Wood, M. H., Zachariou, N., Zhao, Z. W., Zurek, M., HEP, INSPIRE, The strong interaction at the frontier of knowledge: fundamental research and applications - STRONG-2020 - 824093 - INCOMING, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), CLAS, and European Project: 824093,STRONG-2020

Subjects
angular distribution: asymmetry, hydrogen: liquid, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], electron: polarized beam, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], polarization: longitudinal, FOS: Physical sciences, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], spin: dependence, hadron: transverse momentum, transverse momentum dependence, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), hard scattering, CLAS, deep inelastic scattering, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], structure, Nuclear Experiment (nucl-ex), Nuclear Experiment, hydrogen: target, dihadron: electroproduction, Settore FIS/04, modulation, correlation, spectrometer, hadronization, photon: virtual, Jefferson Lab, experimental results
Abstract

We report the first measurements of deep inelastic scattering spin-dependent azimuthal asymmetries in back-to-back dihadron electroproduction, where two hadrons are produced in opposite hemispheres along the z-axis in the center-of-mass frame, with the first hadron produced in the current-fragmentation region and the second in the target-fragmentation region. The data were taken with longitudinally polarized electron beams of 10.2 and 10.6 GeV incident on an unpolarized liquid-hydrogen target using the CLAS12 spectrometer at Jefferson Lab. Observed non-zero $\sin\Delta\phi$ modulations in $ep \rightarrow e'p\pi^+X$ events, where $\Delta\phi$ is the difference of the azimuthal angles of the proton and pion in the virtual photon and target nucleon center-of-mass frame, indicate that correlations between the spin and transverse momenta of hadrons produced in the target- and current-fragmentation regions may be significant. The measured beam-spin asymmetries provide a first access in dihadron production to a previously unobserved leading-twist spin- and transverse-momentum-dependent fracture function. The fracture functions describe the hadronization of the target remnant after the hard scattering of a virtual photon off a quark in the target particle and provide a new avenue for studying nucleonic structure and hadronization., Comment: 7 pages, 6 figures

Published
2023

125. A multidimensional study of the structure function ratio σLT′/σ0 from hard exclusive π+ electro-production off protons in the GPD regime

Author

Diehl, S., Kim, A., Joo, K., Achenbach, P., Akbar, Z., Amaryan, M. J., Atac, H., Avagyan, H., Ayerbe Gayoso, C., Baashen, L., Barion, L., Bashkanov, M., Battaglieri, M., Bedlinskiy, I., Benkel, B., Benmokhtar, F., Bianconi, A., Biselli, A. S., Bondi, M., Booth, W. A., Bossù, F., Boiarinov, S., Brinkmann, K. T., Briscoe, W. J., Bueltmann, S., Bulumulla, D., Burkert, V. D., Carman, D. S., Celentano, A., Chatagnon, P., Chesnokov, V., Chetry, T., Ciullo, G., Clash, G., Cole, P. L., Contalbrigo, M., Costantini, G., D'Angelo, A., Dashyan, N., De Vita, R., Defurne, M., Deur, A., Djalali, C., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Fegan, S., Filippi, A., Gavalian, G., Ghandilyan, Y., Gilfoyle, G. P., Glazier, D. I., Golubenko, A. A., Gosta, G., Gothe, R. W., Gotra, Y., Griffioen, K. A., Guidal, M., Hafidi, K., Hakobyan, H., Hattawy, M., Hayward, T. B., Heddle, D., Hobart, A., Holtrop, M., Ilieva, Y., Ireland, D. G., Isupov, E. L., H. S., Jo, Khachatryan, M., Khanal, A., Kim, W., Kripko, A., Kubarovsky, V., Lagerquist, V., Laget, J. M., Lanza, L., Leali, M., Lee, S., Lenisa, P., Li, X., Livingston, K., J. D. MacGregor I., Marchand, D., Mascagna, V., Mckinnon, B., Meziani, Z. E., Migliorati, S., Mineeva, T., Mirazita, M., Mokeev, V., Molina, E., Montgomery, R. A., Munoz Camacho, C., Nadel-Turonski, P., Naidoo, P., Neupane, K., and Venturelli, L.

Published
2023

126. A multidimensional study of the structure function ratio σLT/σ0 from hard exclusive pi+ electro-production off protons in the GPD regime

Author

Diehl, S, Kim, A, Joo, K, Achenbach, P, Akbar, Z, Amaryan, Mj, Atac, H, Avagyan, H, Ayerbe Gayoso, C, Baashen, L, Barion, L, Bashkanov, M, Battaglieri, M, Bedlinskiy, I, Benkel, B, Benmokhtar, F, Bianconi, A, Biselli, As, Bondi, M, Booth, Wa, Boss??, F, Boiarinov, S, Brinkmann, K, Briscoe, Wj, Bueltmann, S, Bulumulla, D, Burkert, Vd, Carman, Ds, Celentano, A, Chatagnon, P, Chesnokov, V, Chetry, T, Ciullo, G, Clash, G, Cole, Pl, Contalbrigo, M, Costantini, G, D'Angelo, A, Dashyan, N, De Vita, R, Defurne, M, Deur, A, Djalali, C, Dupre, R, Egiyan, H, Ehrhart, M, El Alaoui, A, El Fassi, L, Elouadrhiri, L, Fegan, S, Filippi, A, Gavalian, G, Ghandilyan, Y, Gilfoyle, Gp, Glazier, Di, Golubenko, Aa, Gosta, G, Gothe, Rw, Gotra, Y, Griffioen, Ka, Guidal, M, Hafidi, K, Hakobyan, H, Hattawy, M, Hayward, Tb, Heddle, D, Hobart, A, Holtrop, M, Ilieva, Y, Ireland, Dg, Isupov, El, H. S., J, Khachatryan, M, Khanal, A, Kim, W, Kripko, A, Kubarovsky, V, Lagerquist, V, Laget, J, Lanza, L, Leali, M, Lee, S, Lenisa, P, Li, X, Livingston, K, Macgregor, Ijd, Marchand, D, Mascagna, V, Mckinnon, B, Meziani, Ze, Migliorati, S, Mineeva, T, Mirazita, M, Mokeev, V, Molina, E, Montgomery, Ra, Munoz Camacho, C, Nadel-Turonski, P, Naidoo, P, Neupane, K, Niccolai, S, Nicol, M, Niculescu, G, Osipenko, M, Ouillon, M, Pandey, P, Paolone, M, Pappalardo, Ll, Paremuzyan, R, Pasyuk, E, Paul, Sj, Phelps, W, Pilleux, N, Pokhrel, M, Poudel, J, Price, Jw, Prok, Y, Reed, T, Richards, J, Ripani, M, Ritman, J, Rossi, P, Sabati??, F, Salgado, C, Schadmand, S, Schmidt, A, Sharabian, Y, Shirokov, Ev, Shrestha, U, Simmerling, P, Sokhan, D, Sparveris, N, Spreafico, M, Stepanyan, S, Strakovsky, Ii, Strauch, S, Tan, Ja, Trotta, N, Turisini, M, Tyson, R, Ungaro, M, Vallarino, S, Venturelli, L, Voskanyan, H, Voutier, E, Watts, Dp, Wei, X, Williams, R, Wishart, R, Wood, Mh, Zachariou, N, Zhang, J, Zhao, Zw, and Zurek, M

Subjects
Settore FIS/04
Published
2023

127. Exclusive $\pi^{-}$ Electroproduction off the Neutron in Deuterium in the Resonance Region

Author

Zhang, J., Zachariou, N., Yale, B., Wood, M.H., Wei, X., Wei, K., Watts, D.P., Voutier, E., Voskanyan, H., Venturelli, L., Ungaro, M., Tyson, R., Strauch, S., Strakovsky, I.I., Stepanyan, S., Sparveris, N., Simmerling, P., Shrestha, U., Shirokov, E.V., Schumacher, R.A., Schmidt, A., Schadmand, S., Salgado, C., Sabatié, F., Rizzo, A., Ritman, J., Ripani, M., Reed, T., Prok, Y., Price, J.W., Poudel, J., Pogorelko, O., Pilleux, N., Phelps, W., Paul, S.J., Pasyuk, E., Park, K., Paremuzyan, R., Pappalardo, L.L., Paolone, M., Pandey, P., Osipenko, M., Niculescu, G., Nicol, M., Niccolai, S., Newton, J., Neupane, K., Naidoo, P., Nadel-Turonski, P., Camacho, C. Munoz, Mirazita, M., Mineeva, T., Migliorati, S., Mckinnon, B., Mascagna, V., Marsicano, L., Marchand, D., Macgregor, I..J..D., Livingston, K., Lenisa, P., Leali, M., Lanza, L., Lagerquist, V., Kubarovsky, V., Kripko, A., Klein, F.J., Kim, W., Kim, A., Khandaker, M., Khanal, A., Keller, D., Joosten, S., Joo, K., Jo, H.S., Jenkins, D., Isupov, E.L., Ireland, D.G., Ilieva, Y., Holtrop, M., Hobart, A., Hayward, T.B., Hattawy, M., Hakobyan, H., Guidal, M., Griffioen, K., Gosta, G., Golubenko, A.A., Girod, F.X., Gilfoyle, G.P., Gavalian, G., Filippi, A., Fegan, S., Eugenio, P., Elouadrhiri, L., Fassi, L. El, Alaoui, A. El, Egiyan, H., Dupre, R., Djalali, C., Diehl, S., Deur, A., Defurne, M., de Vita, R., Dashyan, N., d'Angelo, A., Costantini, G., Contalbrigo, M., Cole, P.L., Clash, G., Ciullo, G., Chetry, T., Chesnokov, V., Celentano, A., Carvajal, J.C., Carman, D.S., Capobianco, R., Burkert, V.D., Bulumulla, D., Bueltmann, S., Briscoe, W.J., Brinkmann, K.T., Bondì, M., Boiarinov, S., Bossù, F., Biselli, A., Biondo, L., Bianconi, A., Benmokhtar, F., Benkel, B., Bedlinskiy, I., Battaglieri, M., Barion, L., Avakian, H., Atac, H., Armstrong, W.R., Amaryan, M.J., Hollis, G., Mokeev, V.I., Gothe, R.W., Tian, Y., and HEP, INSPIRE

Subjects
exclusive reaction, data analysis method, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], effect: off-shell, cross section: measured, final-state interaction, pi: electroproduction, hadron: final state, kinematics, CLAS, structure function, deuterium: target, n: target, experimental results, Jefferson Lab, photon: virtual
Abstract

New results for the exclusive and quasi-free cross sections off neutrons bound in deuterium ${\gamma}_vn(p) \rightarrow p{\pi}^{-} (p)$ are presented over a wide final state hadron angle range with a kinematic coverage of the invariant mass ($W$) up to 1.825 GeV and the virtual photon four-momentum transfer squared ($Q^{2}$) from 0.4 to 1.0 GeV$^2$. The exclusive structure functions have been extracted and their Legendre moments were obtained. Final-state-interaction contributions have been kinematically separated from the extracted quasi-free cross sections off bound neutrons solely based on the analysis of the experimental data. These new results will serve as long-awaited input for phenomenological analyses to extract the $Q^{2}$ evolution of previously unavailable $n \to N^{*}$ electroexcitation amplitudes and to improve state-of-the-art models of neutrino scattering off nuclei by augmenting the already available results from free protons.

Published
2023

128. A multidimensional study of the structure function ratio [formula omitted] from hard exclusive π+ electro-production off protons in the GPD regime

Author

Diehl, S., Kim, A., Joo, K., Achenbach, P., Akbar, Z., Amaryan, M.J., Atac, H., Avagyan, H., Ayerbe Gayoso, C., Baashen, L., Barion, L., Bashkanov, M., Battaglieri, M., Bedlinskiy, I., Benkel, B., Benmokhtar, F., Bianconi, A., Biselli, A.S., Bondi, M., Booth, W.A., Bossù, F., Boiarinov, S., Brinkmann, K.-Th., Briscoe, W.J., Bueltmann, S., Bulumulla, D., Burkert, V.D., Carman, D.S., Celentano, A., Chatagnon, P., Chesnokov, V., Chetry, T., Ciullo, G., Clash, G., Cole, P.L., Contalbrigo, M., Costantini, G., D'Angelo, A., Dashyan, N., De Vita, R., Defurne, M., Deur, A., Djalali, C., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Fegan, S., Filippi, A., Gavalian, G., Ghandilyan, Y., Gilfoyle, G.P., Glazier, D.I., Golubenko, A.A., Gosta, G., Gothe, R.W., Gotra, Y., Griffioen, K.A., Guidal, M., Hafidi, K., Hakobyan, H., Hattawy, M., Hayward, T.B., Heddle, D., Hobart, A., Holtrop, M., Ilieva, Y., Ireland, D.G., Isupov, E.L., Jo, H.S., Khachatryan, M., Khanal, A., Kim, W., Kripko, A., Kubarovsky, V., Lagerquist, V., Laget, J.-M., Lanza, L., Leali, M., Lee, S., Lenisa, P., Li, X., Livingston, K., J .D. MacGregor, I., Marchand, D., Mascagna, V., McKinnon, B., Meziani, Z.E., Migliorati, S., Mineeva, T., Mirazita, M., Mokeev, V., Molina, E., Montgomery, R.A., Munoz Camacho, C., Nadel-Turonski, P., Naidoo, P., Neupane, K., Niccolai, S., Nicol, M., Niculescu, G., Osipenko, M., Ouillon, M., Pandey, P., Paolone, M., Pappalardo, L.L., Paremuzyan, R., Pasyuk, E., Paul, S.J., Phelps, W., Pilleux, N., Pokhrel, M., Poudel, J., Price, J.W., Prok, Y., Reed, T., Richards, J., Ripani, M., Ritman, J., Rossi, P., Sabatié, F., Salgado, C., Schadmand, S., Schmidt, A., Sharabian, Y., Shirokov, E.V., Shrestha, U., Simmerling, P., Sokhan, D., Sparveris, N., Spreafico, M., Stepanyan, S., Strakovsky, I.I., Strauch, S., Tan, J.A., Trotta, N., Turisini, M., Tyson, R., Ungaro, M., Vallarino, S., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D.P., Wei, X., Williams, R., Wishart, R., Wood, M.H., Zachariou, N., Zhang, J., Zhao, Z.W., and Zurek, M.

Published
2023
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129. Searching for Prompt and Long-Lived Dark Photons in Electro-Produced $e^+e^-$ Pairs with the Heavy Photon Search Experiment at JLab

Author

Adrian, P.H., Baltzell, N.A., Battaglieri, M., Bondí, M., Boyarinov, S., Bravo, C., Bueltmann, S., Butti, P., Burkert, V.D., Calvo, D., Cao, T., Carpinelli, M., Celentano, A., Charles, G., Colaneri, L., Cooper, W., Cuevas, C., d'Angelo, A., Dashyan, N., de Napoli, M., de Vita, R., Deur, A., Diamond, M., Dupre, R., Egiyan, H., Elouadrhiri, L., Essig, R., Fadeyev, V., Field, C., Filippi, A., Freyberger, A., Garçon, M., Gevorgyan, N., Girod, F.X., Graf, N., Graham, M., Griffioen, K.A., Grillo, A., Guidal, M., Herbst, R., Holtrop, M., Jaros, J., Johnson, R.P., Kalicy, G., Khandaker, M., Kubarovsky, V., Leonora, E., Livingston, K., Marsicano, L., Maruyama, T., Mccarty, S., Mccormick, J., Mckinnon, B., Moffeit, K., Moreno, O., Munoz Camacho, C., Nelson, T., Niccolai, S., Odian, A., Oriunno, M., Osipenko, M., Paremuzyan, R., Paul, S., Randazzo, N., Raydo, B., Reese, B., Rizzo, A., Schuster, P., Sharabian, Y.G., Simi, G., Simonyan, A., Sipala, V., Spellman, A., Sokhan, D., Solt, M., Stepanyan, S., Szumila-Vance, H., Toro, N., Uemura, S., Ungaro, M., Voskanyan, H., Weinstein, L.B., Wojtsekhowski, B., Yale, B., Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and HEP, INSPIRE

Subjects
photon: hidden sector, track data analysis: vertex, data analysis method, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], accelerator, engineering, HPS, FOS: Physical sciences, quantum electrodynamics: background, photon: electroproduction, High Energy Physics - Experiment, electron: pair production, phase space, High Energy Physics - Experiment (hep-ex), photon: mass, photon: heavy, mass spectrum: (electron positron), neutral particle: long-lived, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], mediation, coupling: (photon 2electron), upper limit, resonance: production, Jefferson Lab, experimental results
Abstract

The Heavy Photon Search experiment (HPS) at the Thomas Jefferson National Accelerator Facility searches for electro-produced dark photons. We report results from the 2016 Engineering Run consisting of 10608/nb of data for both the prompt and displaced vertex searches. A search for a prompt resonance in the $e^+e^-$ invariant mass distribution between 39 and 179 MeV showed no evidence of dark photons above the large QED background, limiting the coupling of {\epsilon}^2 {\geq} 10^-5, in agreement with previous searches. The search for displaced vertices showed no evidence of excess signal over background in the masses between 60 and 150 MeV, but had insufficient luminosity to limit canonical heavy photon production. This is the first displaced vertex search result published by HPS. HPS has taken high-luminosity data runs in 2019 and 2021 that will explore new dark photon phase space., Comment: 28 pages, 46 figures

Published
2022
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130. Beam-recoil transferred polarization in K+Y electroproduction in the nucleon resonance region with CLAS12

Author

Carman, D. S., D'Angelo, A., Lanza, L., Mokeev, V. I., Adhikari, K. P., Amaryan, M. J., Armstrong, W. R., Atac, H., Avakian, H., Ayerbe Gayoso, C., Baltzell, N. A., Barion, L., Battaglieri, M., Bedlinskiy, I., Benkel, B., Bianconi, A., Biselli, A. S., Bondi, M., Boiarinov, S., Bossù, F., Briscoe, W. J., Bueltmann, S., Bulumulla, D., Burkert, V. D., Capobianco, R., Carvajal, J. C., Celentano, A., Chatagnon, P., Chesnokov, V., Chetry, T., Ciullo, G., Clark, Louise, Cole, P. L., Contalbrigo, M., Costantini, G., Crede, V., Dashyan, N., De Vita, R., Defurne, M., Deur, A., Diehl, S., Djalali, C., Dupre, R., Ehrhart, M., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Fegan, S., Filippi, A., Gavalian, G., Ghandilyan, Y., Gilfoyle, G. P., Girod, F. X., Glazier, D.I., Golubenko, A. A., Gothe, R. W., Gotra, Y., Griffioen, K. A., Hafidi, K., Hakobyan, H., Hattawy, M., Hauenstein, F., Hayward, T. B., Hobart, A., Holtrop, M., Ilieva, Y., Ireland, D.G., Isupov, E. L., Jo, H. S., Joo, K., Keller, D., Khanal, A., Kim, A., Kim, W., Klimenko, V., Kripko, A., Kubarovsky, V., Leali, M., Lee, S., Lenisa, P., Livingston, K., MacGregor, I.J.D., Marchand, D., Marsicano, L., Mascagna, V., Mayer, M., McKinnon, Bryan, Migliorati, S., Mineeva, T., Mirazita, M., Montgomery, R.A., Munoz Camacho, C., Nadel-Turonski, P., Neupane, K., Newton, J., Niccolai, S., Osipenko, M., Pandey, P., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Paul, S. J., Pilleux, N., Pogorelko, O., Price, J. W., Prok, Y., Raue, B. A., Reed, T., Ripani, M., Ritman, J., Rizzo, A., Rossi, P., Sabatié, F., Salgado, C., Schmidt, A., Sharabian, Y. G., Shirokov, E. V., Shrestha, U., Simmerling, P., Sokhan, D., Sparveris, N., Stepanyan, S., Strakovsky, I. I., Strauch, S., Tyler, N., Tyson, R., Ungaro, M., Vallarino, S., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D. P., Wei, K., Wei, X., Wishart, R., Wood, M. H., Yale, B., Zachariou, N., Zhang, J., Ziegler, V., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and CLAS

Subjects
nucleon: structure, 11.80.Et, hyperon: polarization, FOS: Physical sciences, nucleon resonance, nonperturbative, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], beam: energy, p: target, CLAS, 14.20.Gk, excited nucleon structure, ddc:530, Nuclear Experiment (nucl-ex), Nuclear Experiment, Settore FIS/04, strong interaction, electroproduction, polarization observables, kinematics, Strangeness production, strong QCD, strangeness: production, High Energy Physics::Experiment, spectrometer, 13.60.Le, 13.30.Eg
Abstract

Beam-recoil transferred polarizations for the exclusive electroproduction of $K^+\Lambda$ and $K^+\Sigma^0$ final states from an unpolarized proton target have been measured using the CLAS12 spectrometer at Jefferson Laboratory. The measurements at beam energies of 6.535~GeV and 7.546~GeV span the range of four-momentum transfer $Q^2$ from 0.3 to 4.5~GeV$^2$ and invariant energy $W$ from 1.6 to 2.4~GeV, while covering the full center-of-mass angular range of the $K^+$. These new data extend the existing hyperon polarization data from CLAS in a similar kinematic range but from a significantly larger dataset. They represent an important addition to the world data, allowing for better exploration of the reaction mechanism in strangeness production processes, for further understanding of the spectrum and structure of excited nucleon states, and for improved insight into the strong interaction in the regime of non-perturbative dynamics., Comment: 25 pages, 22 figures, 4 tables

Published
2022

131. Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC

Author

Abelev, B.I., Aggarwal, M.M., Ahammed, Z., Alakhverdyants, A.V., Anderson, B.D., Arkhipkin, D., Averichev, G.S., Badyal, S.K., Balewski, J., Barannikova, O., Barnby, L.S., Baudot, J., Baumgart, S., Beavis, D.R., Bellwied, R., Benedosso, F., Betancourt, M.J., Betts, R.R., Bhasin, A., Bhati, A.K., Bichsel, H., Bielcik, J., Bielcikova, J., Biritz, B., Bland, L.C., Bnzarov, I., Bombara, M., Bonner, B.E., Bouchet, J., Braidot, E., Brandin, A.V., Bruna, E., Bueltmann, S., Burton, T.P., Bystersky, M., Cai, X.Z., Caines, H., Calderón, M., Catu, O., Cebra, D., Cendejas, R., Cervantes, M.C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H.F., Chen, J.H., Chen, J.Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K.E., Christie, W., Clarke, R.F., Codrington, M.J.M., Corliss, R., Cormier, T.M., Cosentino, M.R., Cramer, J.G., Crawford, H.J., Das, D., Das, S., Dash, S., Daugherity, M., De Silva, L.C., Dedovich, T.G., DePhillips, M., Derevschikov, A.A., Derradi de Souza, R., Didenko, L., Djawotho, P., Dogra, S.M., Dong, X., Drachenberg, J.L., Draper, J.E., Dunlop, J.C., Mazumdar, M.R. Dutta, Efimov, L.G., Elhalhuli, E., Elnimr, M., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., Feng, A., Filip, P., Finch, E., Fine, V., Fisyak, Y., Gagliardi, C.A., Gaillard, L., Gangadharan, D.R., Ganti, M.S., Garcia-Solis, E.J., Geromitsos, A., Geurts, F., Ghazikhanian, V., Ghosh, P., Gorbunov, Y.N., Gordon, A., Grebenyuk, O., Grosnick, D., Grube, B., Guertin, S.M., Guimaraes, K.S.F.F., Gupta, A., Gupta, N., Guryn, W., Haag, B., Hallman, T.J., Hamed, A., Harris, J.W., He, W., Heinz, M., Hepplemann, S., Hippolyte, B., Hirsch, A., Hjort, E., Hoffman, A.M., Hoffmann, G.W., Hofman, D.J., Hollis, R.S., Huang, H.Z., Humanic, T.J., Huo, L., Igo, G., Iordanova, A., Jacobs, P., Jacobs, W.W., Jakl, P., Jena, C., Jin, F., Jones, C.L., Jones, P.G., Joseph, J., Judd, E.G., Kabana, S., Kajimoto, K., Kang, K., Kapitan, J., Kauder, K., Keane, D., Kechechyan, A., Kettler, D., Khodyrev, V.Yu., Kikola, D.P., Kiryluk, J., Kisiel, A., Klein, S.R., Knospe, A.G., Kocoloski, A., Koetke, D.D., Konzer, J., Kopytine, M., Koralt, I., Korsch, W., Kotchenda, L., Kouchpil, V., Kravtsov, P., Kravtsov, V.I., Krueger, K., Krus, M., Kuhn, C., Kumar, L., Kurnadi, P., Lamont, M.A.C., Landgraf, J.M., LaPointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, C.-H., Lee, J.H., Leight, W., LeVine, M.J., Li, C., Li, N., Li, Y., Lin, G., Lindenbaum, S.J., Lisa, M.A., Liu, F., Liu, H., Liu, J., Liu, L., Ljubicic, T., Llope, W.J., Longacre, R.S., Love, W.A., Lu, Y., Ludlam, T., Ma, G.L., Ma, Y.G., Mahapatra, D.P., Majka, R., Mall, O.I., Mangotra, L.K., Manweiler, R., Margetis, S., Markert, C., Masui, H., Matis, H.S., Matulenko, Yu.A., McDonald, D., McShane, T.S., Meschanin, A., Millner, R., Minaev, N.G., Mioduszewski, S., Mischke, A., Mohanty, B., Mondal, M.M., Morozov, D.A., Munhoz, M.G., Nandi, B.K., Nattrass, C., Nayak, T.K., Nelson, J.M., Netrakanti, P.K., Ng, M.J., Nogach, L.V., Nurushev, S.B., Odyniec, G., Ogawa, A., Okada, H., Okorokov, V., Olson, D., Pachr, M., Page, B.S., Pal, S.K., Pandit, Y., Panebratsev, Y., Pawlak, T., Peitzmann, T., Perevoztchikov, V., Perkins, C., Peryt, W., Phatak, S.C., Pile, P., Planinic, M., Ploskon, M.A., Pluta, J., Plyku, D., Poljak, N., Poskanzer, A.M., Potukuchi, B.V.K.S., Prindle, D., Pruneau, C., Pruthi, N.K., Pujahari, P.R., Putschke, J., Raniwala, R., Raniwala, S., Ray, R.L., Redwine, R., Reed, R., Ridiger, A., Ritter, H.G., Roberts, J.B., Rogachevskiy, O.V., Romero, J.L., Rose, A., Roy, C., Ruan, L., Russcher, M.J., Sahoo, R., Sakai, S., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Sarsour, M., Schambach, J., Scharenberg, R.P., Schmitz, N., Seger, J., Selyuzhenkov, I., Seyboth, P., Shabetai, A., Shahaliev, E., Shao, M., Sharma, M., Shi, S.S., Shi, X.-H., Sichtermann, E.P., Simon, F., Singaraju, R.N., Skoby, M.J., Smirnov, N., Sorensen, P., Sowinski, J., Spinka, H.M., Srivastava, B., Stanislaus, T.D.S., Staszak, D., Strikhanov, M., Stringfellow, B., Suaide, A.A.P., Suarez, M.C., Subba, N.L., Sumbera, M., Sun, X.M., Sun, Y., Sun, Z., Surrow, B., Symons, T.J.M., Szanto de Toledo, A., Takahashi, J., Tang, A.H., Tang, Z., Tarini, L.H., Tarnowsky, T., Thein, D., Thomas, J.H., Tian, J., Timmins, A.R., Timoshenko, S., Tlusty, D., Tokarev, M., Trainor, T.A., Tram, V.N., Trattner, A.L., Trentalange, S., Tribble, R.E., Tsai, O.D., Ulery, J., Ullrich, T., Underwood, D.G., Van Buren, G., van Leeuwen, M., van Nieuwenhuizen, G., Vanfossen, J.A., Jr., Varma, R., Vasconcelos, G.M.S., Vasiliev, A.N., Videbaek, F., Vigdor, S.E., Viyogi, Y.P., Vokal, S., Voloshin, S.A., Wada, M., Walker, M., Wang, F., Wang, G., Wang, H., Wang, J.S., Wang, Q., Wang, X., Wang, X.L., Wang, Y., Webb, G., Webb, J.C., Westfall, G.D., Whitten, C., Jr., Wieman, H., Wissink, S.W., Witt, R., Wu, Y., Xie, W., Xu, N., Xu, Q.H., Xu, Y., Xu, Z., Yang, Y., Yepes, P., Yip, K., Yoo, I.-K., Yue, Q., Zawisza, M., Zbroszczyk, H., Zhan, W., Zhang, S., Zhang, W.M., Zhang, X.P., Zhang, Y., Zhang, Z.P., Zhao, Y., Zhong, C., Zhou, J., Zhu, X., Zoulkarneev, R., Zoulkarneeva, Y., and Zuo, J.X.

Published
2010
Full Text
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132. Measurements of dihadron correlations relative to the event plane in Au+Au collisions at GeV * *Supported in part by the Offices of NP and HEP within the U.S. DOE Office of Science, the U.S. NSF, the Sloan Foundation, the DFG cluster of excellence ‘Origin and Structure of the Universe’ of Germany, CNRS/IN2P3, STFC and EPSRC of the United Kingdom, FAPESP CNPq of Brazil, Ministry of Ed. and Sci. of the Russian Federation, NNSFC, CAS, MoST, and MoE of China, GA and MSMT of the Czech Republic, FOM and NWO of the Netherlands, DAE, DST, and CSIR of India, Polish Ministry of Sci. and Higher Ed., Korea Research Foundation, Ministry of Sci., Ed. and Sports of the Rep. Of Croatia, Russian Ministry of Sci. and Tech, and RosAtom of Russia

Author

Agakishiev, H, Aggarwal, MM, Ahammed, Z, Alakhverdyants, AV, Alekseev, I, Alford, J, Anderson, BD, Anson, CD, Arkhipkin, D, Averichev, GS, Balewski, J, Beavis, DR, Behera, NK, Bellwied, R, Betancourt, MJ, Betts, RR, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, LC, Borowski, W, Bouchet, J, Braidot, E, Brandin, AV, Bridgeman, A, Brovko, SG, Bruna, E, Bueltmann, S, Bunzarov, I, Burton, TP, Cai, XZ, Caines, H, de la Barca Sánchez, M Calderón, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Chen, L, Cheng, J, Cherney, M, Chikanian, A, Choi, KE, Christie, W, Chung, P, Codrington, MJM, Corliss, R, Cramer, JG, Crawford, HJ, Dash, S, Leyva, A Davila, De Silva, LC, Debbe, RR, Dedovich, TG, Derevschikov, AA, de Souza, R Derradi, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Dunlop, JC, Efimov, LG, Elnimr, M, Engelage, J, Eppley, G, Estienne, M, Eun, L, Evdokimov, O, Fatemi, R, Fedorisin, J, Feng, A, Fersch, RG, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gangadharan, DR, Geromitsos, A, Geurts, F, Ghosh, P, Gorbunov, YN, Gordon, A, Grebenyuk, O, Grosnick, D, Guertin, SM, Gupta, A, Guryn, W, Haag, B, Hajkova, O, and Hamed, A

Subjects
Particle and Plasma Physics, nucl-th, anisotropic flow background, Molecular, Nuclear, event plane, Nuclear Experiment, dihadron correlations, nucl-ex, jet-medium interactions, Atomic, Nuclear & Particles Physics, relativistic heavy ion collisions
Abstract

Dihadron azimuthal correlations containing a high transverse momentum (pT) trigger particle are sensitive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium, i.e. jet-quenching. Previous measurements revealed a strong modification to dihadron azimuthal correlations in Au+Au collisions with respect to p+p and d+Au collisions. The modification increases with the collision centrality, suggesting a path-length or energy density dependence to the jet-quenching effect. This paper reports STAR measurements of dihadron azimuthal correlations in mid-central (20%-60%) Au+Au collisions at GeV as a function of the trigger particle's azimuthal angle relative to the event plane, . The azimuthal correlation is studied as a function of both the trigger and associated particle . The subtractions of the combinatorial background and anisotropic flow, assuming Zero Yield At Minimum (ZYAM), are described. The correlation results are first discussed with subtraction of the even harmonic (elliptic and quadrangular) flow backgrounds. The away-side correlation is strongly modified, and the modification varies with , with a double-peak structure for out-of-plane trigger particles. The near-side ridge (long range pseudo-rapidity correlation) appears to drop with increasing while the jet-like component remains approximately constant. The correlation functions are further studied with the subtraction of odd harmonic triangular flow background arising from fluctuations. It is found that the triangular flow, while responsible for the majority of the amplitudes, is not sufficient to explain the -dependence of the ridge or the away-side double-peak structure. The dropping ridge with could be attributed to a -dependent elliptic anisotropy; however, the physics mechanism of the ridge remains an open question. Even with a -dependent elliptic flow, the away-side correlation structure is robust. These results, with extensive systematic studies of the dihadron correlations as a function of , trigger and associated particle , and the pseudo-rapidity range , should provide stringent inputs to help understand the underlying physics mechanisms of jet-medium interactions in high energy nuclear collisions.

Published
2021

133. Measurements of dihadron correlations relative to the event plane in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV

Author

Agakishiev, H., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Alekseev, I., Alford, J., Anderson, B. D., Anson, C. D., Arkhipkin, D., Averichev, G. S., Balewski, J., Beavis, D. R., Behera, N. K., Bellwied, R., Betancourt, M. J., Betts, R. R., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Biritz, B., Bland, L. C., Borowski, W., Bouchet, J., Braidot, E., Brandin, A. V., Bridgeman, A., Brovko, S. G., Bruna, E., Bueltmann, S., Bunzarov, I., Burton, T. P., Cai, X. Z., Caines, H., Sanchez, M. Calderon de la Barca, Cebra, D., Cendejas, R., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Chen, L., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, P., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Dash, S., Leyva, A. Davila, De Silva, L. C., Debbe, R. R., Dedovich, T. G., Derevschikov, A. A., de Souza, R. Derradi, Didenko, L., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Dunlop, J. C., Efimov, L. G., Elnimr, M., Engelage, J., Eppley, G., Estienne, M., Eun, L., Evdokimov, O., Fatemi, R., Fedorisin, J., Feng, A., Fersch, R. G., Filip, P., Finch, E., Fine, V., Fisyak, Y., Gagliardi, C. A., Gangadharan, D. R., Geromitsos, A., Geurts, F., Ghosh, P., Gorbunov, Y. N., Gordon, A., Grebenyuk, O., Grosnick, D., Guertin, S. M., Gupta, A., Guryn, W., Haag, B., Hajkova, O., Hamed, A., Han, L-X., Harris, J. W., Hays-Wehle, J. P., Heinz, M., Heppelmann, S., Hirsch, A., Hjort, E., Hofmann, G. W., Hofman, D. J., Huang, B., Huang, H. Z., Humanic, T. J., Huo, L., Igo, G., Jacobs, P., Jacobs, W. W., Jena, C., Jin, F., Joseph, J., Judd, E. G., Kabana, S., Kang, K., Kapitan, J., Kauder, K., Ke, H., Keane, D., Kechechyan, A., Kettler, D., Kikola, D. P., Kiryluk, J., Kisiel, A., Kizka, V., Knospe, A. G., Koetke, D. D., Kollegger, T., Konzer, J., Koralt, I., Koroleva, L., Korsch, W., Kotchenda, L., Kouchpil, V., Kravtsov, P., Krueger, K., Krus, M., Kumar, L., Kurnadi, P., Lamont, M. A. C., Landgraf, J. M., LaPointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Leight, W., LeVine, M. J., Li, C., Li, L., Li, N., Li, W., Li, X., Li, Y., Li, Z. M., Lisa, M. A., Liu, F., Liu, H., Liu, J., Ljubicic, T., Llope, W. J., Longacre, R. S., Love, W. A., Lu, Y., Lukashov, E. V., Luo, X., Ma, G. L., Ma, Y. G., Mahapatra, D. P., Majka, R., Mall, O. I., Mangotra, L. K., Manweiler, R., Margetis, S., Markert, C., Masui, H., Matis, H. S., Matulenko, Yu. A., McDonald, D., McShane, T. S., Meschanin, A., Milner, R., Minaev, N. G., Mioduszewski, S., Mischke, A., Mitrovski, M. K., Mohanty, B., Mondal, M. M., Morozov, B., Morozov, D. A., Munhoz, M. G., Naglis, M., Nandi, B. K., Nayak, T. K., Netrakanti, P. K., Nogach, L. V., Nurushev, S. B., Odyniec, G., Ogawa, A., Ohlson, Okorokov, V., Oldag, E. W., Olson, D., Pachr, M., Page, B. S., Pal, S. K., Pandit, Y., Panebratsev, Y., Pawlak, T., Pei, H., Peitzmann, T., Perkins, C., Peryt, W., Phatak, S. C., Pile, P., Planinic, M., Ploskon, M. A., Pluta, J., Plyku, D., Poljak, N., Poskanzer, A. M., Potukuchi, B. V. K. S., Powell, C. B., Prindle, D., Pruthi, N. K., Pujahari, P. R., Putschke, J., Qiu, H., Raniwala, R., Raniwala, S., Ray, R. L., Redwine, R., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Rose, A., Ruan, L., Rusnak, J., Sahoo, N. R., Sakai, S., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Sangaline, E., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmitz, N., Schuster, T. R., Seele, J., Seger, J., Selyuzhenkov, I., Seyboth, P., Shahaliev, E., Shao, M., Sharma, M., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Simon, F., Singaraju, R. N., Skoby, M. J., Smirnov, N., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Staszak, D., Steadman, S. G., Stevens, J. R., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Subba, N. L., Sumbera, M., Sun, X. M., Sun, Y., Sun, Z., Surrow, B., Svirida, D. N., Symons, T. J. M., de Toledo, A. Szanto, Takahashi, J., Tang, A. H., Tang, Z., Tarini, L. H., Tarnowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Tlusty, D., Tokarev, M., Tram, V. N., Trentalange, S., Tribble, R. E., Tribedy, Tsai, O. D., Ullrich, T., Underwood, D. G., Van Buren, G., van Nieuwenhuizen, G., Vanfossen, Jr., J. A., Varma, R., Vasconcelos, G. M. S., Vasiliev, A. N., Videbaek, F., Viyogi, Y. P., Vokal, S., Wada, M., Walker, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, Q., Wang, X. L., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Whitten Jr., C., Wieman, H., Wissink, S. W., Witt, R., Witzke, W., Wu, Y. F., Xiao, Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, W., Xu, Y., Xu, Z., Xue, L., Yang, Y., Yepes, P., Yip, K., Yoo, I-K., Zawisza, M., Zbroszczyk, H., Zhan, W., Zhang, J. B., Zhang, S., Zhang, W. M., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, J., Zhong, C., Zhou, W., Zhu, X., Zhu, Y. H., Zoulkarneev, R., Zoulkarneeva, Y., Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), and STAR

Subjects
heavy ion: scattering, Nuclear Theory, nucl-th, transverse momentum: high, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, transverse momentum: momentum spectrum, dihadron: angular correlation, Nuclear Theory (nucl-th), 25.75.Dw, path length: dependence, correlation function, Nuclear Experiment (nucl-ex), Nuclear Experiment, impact parameter: dependence, Brookhaven RHIC Coll, STAR, 25.75.-q, correlation: long-range, gold, flow: anisotropy, charged particle: trigger, nuclear matter, 200 GeV-cms/nucleon, jet: quenching
Abstract

Dihadron azimuthal correlations containing a high transverse momentum ($p_T$) trigger particle are sensitive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium, i.e. jet-quenching. Previous measurements revealed a strong modification to dihadron azimuthal correlations in Au+Au collisions with respect to p+p and d+Au collisions. The modification increases with the collision centrality, suggesting a path-length or energy density dependence to the jet-quenching effect. This paper reports STAR measurements of dihadron azimuthal correlations in mid-central (20-60%) Au+Au collisions at $\sqrt{s_{_{\rm NN}}}=200$ GeV as a function of the trigger particle's azimuthal angle relative to the event plane, $\phi_s=|\phi_t-\psi_{\rm EP}|$. The azimuthal correlation is studied as a function of both the trigger and associated particle $p_T$. The subtractions of the combinatorial background and anisotropic flow, assuming Zero Yield At Minimum (ZYAM), are described. The correlation results are first discussed with subtraction of the even harmonic (elliptic and quadrangular) flow backgrounds. The away-side correlation is strongly modified, and the modification varies with $\phi_s$, with a double-peak structure for out-of-plane trigger particles. The near-side ridge (long range pseudo-rapidity $\Delta\eta$ correlation) appears to drop with increasing $\phi_s$ while the jet-like component remains approximately constant. The correlation functions are further studied with subtraction of odd harmonic triangular flow background arising from fluctuations. It is found that the triangular flow, while responsible for the majority of the amplitudes, is not sufficient to explain the $\phi_s$-dependence of the ridge or the away-side double-peak structure. ..., Comment: 54 pages, 40 figures, 6 tables. As published

Published
2021

134. BoNus: Development and use of a radial TPC using cylindrical GEMs

Author

Fenker, H., Baillie, N., Bradshaw, P., Bueltmann, S., Burkert, V., Christy, M., Dodge, G., Dutta, D., Ent, R., Evans, J., Fersch, R., Giovanetti, K., Griffioen, K., Ispiryan, M., Jayalath, C., Kalantarians, N., Keppel, C., Kuhn, S., Niculescu, G., Niculescu, I., Tkachenko, S., Tvaskis, V., and Zhang, J.

Published
2008
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136. Results on total and elastic cross sections in proton–proton collisions at [formula omitted] GeV

Author

Adam, J., Adamczyk, L., Adams, J.R., Adkins, J.K., Agakishiev, G., Aggarwal, M.M., Ahammed, Z., Alekseev, I., Anderson, D.M., Aparin, A., Aschenauer, E.C., Ashraf, M.U., Atetalla, F.G., Attri, A., Averichev, G.S., Bairathi, V., Barish, K., Behera, A., Bellwied, R., Bhasin, A., Bielcik, J., Bielcikova, J., Bland, L.C., Bordyuzhin, I.G., Brandenburg, J.D., Brandin, A.V., Bueltmann, S., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Chakaberia, I., Chaloupka, P., Chan, B.K., Chang, F-H., Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chen, D., Chen, J.H., Chen, X., Chen, Z., Cheng, J., Cherney, M., Chevalier, M., Choudhury, S., Christie, W., Chu, X., Crawford, H.J., Csanád, M., Daugherity, M., Dedovich, T.G., Deppner, I.M., Derevschikov, A.A., Didenko, L., Dong, X., Drachenberg, J.L., Dunlop, J.C., Edmonds, T., Elsey, N., Engelage, J., Eppley, G., Esumi, S., Evdokimov, O., Ewigleben, A., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, C.J., Feng, Y., Filip, P., Finch, E., Fisyak, Y., Francisco, A., Fulek, L., Gagliardi, C.A., Galatyuk, T., Geurts, F., Gibson, A., Gopal, K., Grosnick, D., Guryn, W., Hamad, A.I., Hamed, A., Harabasz, S., Harris, J.W., He, S., He, W., He, X.H., Heppelmann, S., Herrmann, N., Hoffman, E., Holub, L., Hong, Y., Horvat, S., Hu, Y., Huang, H.Z., Huang, S.L., Huang, T., Huang, X., Humanic, T.J., Huo, P., Igo, G., Isenhower, D., Jacobs, W.W., Jena, C., Jentsch, A., Ji, Y., Jia, J., Jiang, K., Jowzaee, S., Ju, X., Judd, E.G., Kabana, S., Kabir, M.L., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H.W., Keane, D., Kechechyan, A., Kelsey, M., Khyzhniak, Y.V., Kikoła, D.P., Kim, C., Kimelman, B., Kincses, D., Kinghorn, T.A., Kisel, I., Kiselev, A., Kocan, M., Kochenda, L., Kosarzewski, L.K., Kramarik, L., Kravtsov, P., Krueger, K., Kulathunga Mudiyanselage, N., Kumar, L., Kumar, S., Kunnawalkam Elayavalli, R., Kwasizur, J.H., Lacey, R., Lan, S., Landgraf, J.M., Lauret, J., Lebedev, A., Lednicky, R., Lee, J.H., Leung, Y.H., Li, C., Li, W., Li, X., Li, Y., Liang, Y., Licenik, R., Lin, T., Lin, Y., Lisa, M.A., Liu, F., Liu, H., Liu, P., Liu, T., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W.J., Longacre, R.S., Lukow, N.S., Luo, S., Luo, X., Ma, G.L., Ma, L., Ma, R., Ma, Y.G., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H.S., Mazer, J.A., Minaev, N.G., Mioduszewski, S., Mohanty, B., Mooney, I., Moravcova, Z., Morozov, D.A., Nagy, M., Nam, J.D., Nasim, Md., Nayak, K., Neff, D., Nelson, J.M., Nemes, D.B., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L.V., Nonaka, T., Nunes, A.S., Odyniec, G., Ogawa, A., Oh, S., Okorokov, V.A., Page, B.S., Pak, R., Pandav, A., Panebratsev, Y., Pawlik, B., Pawlowska, D., Pei, H., Perkins, C., Pinsky, L., Pintér, R.L., Pluta, J., Porter, J., Posik, M., Pruthi, N.K., Przybycien, M., Putschke, J., Qiu, H., Quintero, A., Radhakrishnan, S.K., Ramachandran, S., Ray, R.L., Reed, R., Ritter, H.G., Rogachevskiy, O.V., Romero, J.L., Ruan, L., Rusnak, J., Sahoo, N.R., Sako, H., Salur, S., Sandweiss, J., Sato, S., Schmidke, W.B., Schmitz, N., Schweid, B.R., Seck, F., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P.V., Shao, M., Sheikh, A.I., Shen, F., Shen, W.Q., Shi, S.S., Shou, Q.Y., Sichtermann, E.P., Sikora, R., Simko, M., Singh, J., Singha, S., Smirnov, N., Solyst, W., Sorensen, P., Spinka, H.M., Srivastava, B., Stanislaus, T.D.S., Stefaniak, M., Stewart, D.J., Strikhanov, M., Stringfellow, B., Suaide, A.A.P., Sumbera, M., Summa, B., Sun, X.M., Sun, X., Sun, Y., Surrow, B., Svirida, D.N., Szymanski, P., Tang, A.H., Tang, Z., Taranenko, A., Tarnowsky, T., Thomas, J.H., Timmins, A.R., Tlusty, D., Tokarev, M., Tomkiel, C.A., Trentalange, S., Tribble, R.E., Tribedy, P., Tripathy, S.K., Tsai, O.D., Tu, Z., Ullrich, T., Underwood, D.G., Upsal, I., Van Buren, G., Vanek, J., Vasiliev, A.N., Vassiliev, I., Videbæk, F., Vokal, S., Voloshin, S.A., Wang, F., Wang, G., Wang, J.S., Wang, P., Wang, Y., Wang, Z., Webb, J.C., Weidenkaff, P.C., Wen, L., Westfall, G.D., Wieman, H., Wissink, S.W., Witt, R., Wu, Y., Xiao, Z.G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q.H., Xu, Y.F., Xu, Y., Xu, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Yang, Z., Ye, Z., Yi, L., Yip, K., Zbroszczyk, H., Zha, W., Zhang, C., Zhang, D., Zhang, S., Zhang, X.P., Zhang, Y., Zhang, Z.J., Zhang, Z., Zhao, J., Zhong, C., Zhou, C., Zhu, X., Zhu, Z., Zurek, M., and Zyzak, M.

Published
2020
Full Text
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137. Search for a dark photon in electroproduced e+e- pairs with the Heavy Photon Search experiment at JLab

Author

Adrian, P, Baltzell, N, Battaglieri, M, Bondí, M, Boyarinov, S, Bueltmann, S, Burkert, V, Calvo, D, Carpinelli, M, Celentano, A, Charles, G, Colaneri, L, Cooper, W, Cuevas, C, D'Angelo, A, Dashyan, N, De Napoli, M, De Vita, R, Deur, A, Dupre, R, Egiyan, H, Elouadrhiri, L, Essig, R, Fadeyev, V, Field, C, Filippi, A, Freyberger, A, Garçon, M, Gevorgyan, N, Girod, F, Graf, N, Graham, M, Griffioen, K, Grillo, A, Guidal, M, Herbst, R, Holtrop, M, Jaros, J, Kalicy, G, Khandaker, M, Kubarovsky, V, Leonora, E, Livingston, K, Maruyama, T, Mccarty, K, Mccormick, J, Mckinnon, B, Moffeit, K, Moreno, O, Munoz Camacho, C, Nelson, T, Niccolai, S, Odian, A, Oriunno, M, Osipenko, M, Paremuzyan, R, Paul, S, Randazzo, N, Raydo, B, Reese, B, Rizzo, A, Schuster, P, Sharabian, Y, Simi, G, Simonyan, A, Sipala, V, Sokhan, D, Solt, M, Stepanyan, S, Szumila-Vance, H, Toro, N, Uemura, S, Ungaro, M, Voskanyan, H, Weinstein, L, Wojtsekhowski, B, Yale, B, Adrian, P. H., Baltzell, N. A., Battaglieri, M., Bondí, M., Boyarinov, S., Bueltmann, S., Burkert, V. D., Calvo, D., Carpinelli, M., Celentano, A., Charles, G., Colaneri, L., Cooper, W., Cuevas, C., D'Angelo, A., Dashyan, N., De Napoli, M., De Vita, R., Deur, A., Dupre, R., Egiyan, H., Elouadrhiri, L., Essig, R., Fadeyev, V., Field, C., Filippi, A., Freyberger, A., Garçon, M., Gevorgyan, N., Girod, F. X., Graf, N., Graham, M., Griffioen, K. A., Grillo, A., Guidal, M., Herbst, R., Holtrop, M., Jaros, J., Kalicy, G., Khandaker, M., Kubarovsky, V., Leonora, E., Livingston, K., Maruyama, T., McCarty, K., McCormick, J., McKinnon, B., Moffeit, K., Moreno, O., Munoz Camacho, C., Nelson, T., Niccolai, S., Odian, A., Oriunno, M., Osipenko, M., Paremuzyan, R., Paul, S., Randazzo, N., Raydo, B., Reese, B., Rizzo, A., Schuster, P., Sharabian, Y. G., Simi, G., Simonyan, A., Sipala, V., Sokhan, D., Solt, M., Stepanyan, S., Szumila-Vance, H., Toro, N., Uemura, S., Ungaro, M., Voskanyan, H., Weinstein, L. B., Wojtsekhowski, B., Yale, B., Adrian, P, Baltzell, N, Battaglieri, M, Bondí, M, Boyarinov, S, Bueltmann, S, Burkert, V, Calvo, D, Carpinelli, M, Celentano, A, Charles, G, Colaneri, L, Cooper, W, Cuevas, C, D'Angelo, A, Dashyan, N, De Napoli, M, De Vita, R, Deur, A, Dupre, R, Egiyan, H, Elouadrhiri, L, Essig, R, Fadeyev, V, Field, C, Filippi, A, Freyberger, A, Garçon, M, Gevorgyan, N, Girod, F, Graf, N, Graham, M, Griffioen, K, Grillo, A, Guidal, M, Herbst, R, Holtrop, M, Jaros, J, Kalicy, G, Khandaker, M, Kubarovsky, V, Leonora, E, Livingston, K, Maruyama, T, Mccarty, K, Mccormick, J, Mckinnon, B, Moffeit, K, Moreno, O, Munoz Camacho, C, Nelson, T, Niccolai, S, Odian, A, Oriunno, M, Osipenko, M, Paremuzyan, R, Paul, S, Randazzo, N, Raydo, B, Reese, B, Rizzo, A, Schuster, P, Sharabian, Y, Simi, G, Simonyan, A, Sipala, V, Sokhan, D, Solt, M, Stepanyan, S, Szumila-Vance, H, Toro, N, Uemura, S, Ungaro, M, Voskanyan, H, Weinstein, L, Wojtsekhowski, B, Yale, B, Adrian, P. H., Baltzell, N. A., Battaglieri, M., Bondí, M., Boyarinov, S., Bueltmann, S., Burkert, V. D., Calvo, D., Carpinelli, M., Celentano, A., Charles, G., Colaneri, L., Cooper, W., Cuevas, C., D'Angelo, A., Dashyan, N., De Napoli, M., De Vita, R., Deur, A., Dupre, R., Egiyan, H., Elouadrhiri, L., Essig, R., Fadeyev, V., Field, C., Filippi, A., Freyberger, A., Garçon, M., Gevorgyan, N., Girod, F. X., Graf, N., Graham, M., Griffioen, K. A., Grillo, A., Guidal, M., Herbst, R., Holtrop, M., Jaros, J., Kalicy, G., Khandaker, M., Kubarovsky, V., Leonora, E., Livingston, K., Maruyama, T., McCarty, K., McCormick, J., McKinnon, B., Moffeit, K., Moreno, O., Munoz Camacho, C., Nelson, T., Niccolai, S., Odian, A., Oriunno, M., Osipenko, M., Paremuzyan, R., Paul, S., Randazzo, N., Raydo, B., Reese, B., Rizzo, A., Schuster, P., Sharabian, Y. G., Simi, G., Simonyan, A., Sipala, V., Sokhan, D., Solt, M., Stepanyan, S., Szumila-Vance, H., Toro, N., Uemura, S., Ungaro, M., Voskanyan, H., Weinstein, L. B., Wojtsekhowski, B., and Yale, B.

Abstract

The Heavy Photon Search experiment took its first data in a 2015 engineering run using a 1.056 GeV, 50 nA electron beam provided by CEBAF at the Thomas Jefferson National Accelerator Facility, searching for a prompt, electroproduced dark photon with a mass between 19 and 81 MeV/c2. A search for a resonance in the e+e- invariant mass distribution, using 1.7 days (1170 nb-1) of data, showed no evidence of dark photon decays above the large QED background, confirming earlier searches and demonstrating the full functionality of the experiment. Upper limits on the square of the coupling of the dark photon to the standard model photon are set at the level of 6×10-6. Future runs with higher luminosity will explore new territory.

Published
2018

138. Measurement of inclusive <math><mi>J</mi><mo>/</mo><mi>ψ</mi></math> polarization in <math><mi>p</mi><mo>+</mo><mi>p</mi></math> collisions at <math><msqrt><mi>s</mi></msqrt><mo>=</mo><mn>200</mn><mtext> </mtext><mtext> </mtext><mi>GeV</mi></math> by the STAR experiment

Author

Adam, J., Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Anderson, D. M., Aparin, A., Aschenauer, E. C., Ashraf, M. U., Atetalla, F. G., Attri, A., Averichev, G. S., Bairathi, V., Barish, K., Behera, A., Bellwied, R., Bhasin, A., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Brandenburg, J. D., Brandin, A. V., Bueltmann, S., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, F-H., Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chen, D., Chen, J. H., Chen, X., Chen, Z., Cheng, J., Cherney, M., Chevalier, M., Choudhury, S., Christie, W., Crawford, H. J., Csanád, M., Daugherity, M., Dedovich, T. G., Deppner, I. M., Derevschikov, A. A., Didenko, L., Dong, X., Drachenberg, J. L., Dunlop, J. C., Edmonds, T., Elsey, N., Engelage, J., Eppley, G., Esha, R., Esumi, S., Evdokimov, O., Ewigleben, A., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, C. J., Feng, Y., Filip, P., Finch, E., Fisyak, Y., Francisco, A., Fulek, L., Gagliardi, C. A., Galatyuk, T., Geurts, F., Gibson, A., Gopal, K., Grosnick, D., Guryn, W., Hamad, A. I., Hamed, A., Harris, J. W., He, S., He, W., He, X., Heppelmann, S., Herrmann, N., Hoffman, E., Holub, L., Hong, Y., Horvat, S., Hu, Y., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Humanic, T. J., Huo, P., Igo, G., Isenhower, D., Jacobs, W. W., Jena, C., Jentsch, A., JI, Y., Jia, J., Jiang, K., Jowzaee, S., Ju, X., Judd, E. G., Kabana, S., Kabir, M. L., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kelsey, M., Khyzhniak, Y. V., Kikoła, D. P., Kim, C., Kimelman, B., Kincses, D., Kinghorn, T. A., Kisel, I., Kiselev, A., Kisiel, A., Kocan, M., Kochenda, L., Kosarzewski, L. K., Kramarik, L., Kravtsov, P., Krueger, K., Kulathunga Mudiyanselage, N., Kumar, L., Kunnawalkam Elayavalli, R., Kwasizur, J. H., Lacey, R., Lan, S., Landgraf, J. M., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Leung, Y. H., Li, C., Li, W., Li, X., Li, Y., Liang, Y., Licenik, R., Lin, T., Lin, Y., Lisa, M. A., Liu, F., Liu, H., Liu, P., Liu, T., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Longacre, R. S., Lukow, N. S., Luo, S., Luo, X., Ma, G. L., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Mazer, J. A., Minaev, N. G., Mioduszewski, S., Mohanty, B., Mondal, M. M., Mooney, I., Moravcova, Z., Morozov, D. A., Nagy, M., Nam, J. D., Nasim, Md., Nayak, K., Neff, D., Nelson, J. M., Nemes, D. B., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L. V., Nonaka, T., Odyniec, G., Ogawa, A., Oh, S., Okorokov, V. A., Page, B. S., Pak, R., Pandav, A., Panebratsev, Y., Pawlik, B., Pawlowska, D., Pei, H., Perkins, C., Pinsky, L., Pintér, R. L., Pluta, J., Porter, J., Posik, M., Pruthi, N. K., Przybycien, M., Putschke, J., Qiu, H., Quintero, A., Radhakrishnan, S. K., Ramachandran, S., Ray, R. L., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ruan, L., Rusnak, J., Sahoo, N. R., Sako, H., Salur, S., Sandweiss, J., Sato, S., Schmidke, W. B., Schmitz, N., Schweid, B. R., Seck, F., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Shen, F., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Sikora, R., Simko, M., Singh, J., Singha, S., Smirnov, N., Solyst, W., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Stefaniak, M., Stewart, D. J., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Sumbera, M., Summa, B., Sun, X. M., Sun, Y., Surrow, B., Svirida, D. N., Szymanski, P., Tang, A. H., Tang, Z., Taranenko, A., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Tlusty, D., Tokarev, M., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Tsai, O. D., Tu, Z., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vasiliev, A. N., Vassiliev, I., Videbæk, F., Vokal, S., Voloshin, S. A., Wang, F., Wang, G., Wang, J. S., Wang, P., Wang, Y., Wang, Z., Webb, J. C., Weidenkaff, P. C., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y. F., Xu, Y., Xu, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Yang, Z., Ye, Z., Yi, L., Yip, K., Zbroszczyk, H., Zha, W., Zhang, D., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z. J., Zhang, Z., Zhao, J., Zhong, C., Zhou, C., Zhu, X., Zhu, Z., Zurek, M., and Zyzak, M.

Subjects
Computer Science::Digital Libraries
Abstract

We report on new measurements of inclusive J/ψ polarization at midrapidity in p+p collisions at s=200 GeV by the STAR experiment at the Relativistic Heavy Ion Collider. The polarization parameters, λθ, λϕ, and λθϕ, are measured as a function of transverse momentum (pT) in both the helicity and Collins-Soper (CS) reference frames within pT<10 GeV/c. Except for λθ in the CS frame at the highest measured pT, all three polarization parameters are consistent with 0 in both reference frames without any strong pT dependence. Several model calculations are compared with data, and the one using the Color Glass Condensate effective field theory coupled with nonrelativistic QCD gives the best overall description of the experimental results, even though other models cannot be ruled out due to experimental uncertainties.

Published
2020

139. Results on total and elastic cross sections in proton–proton collisions at GeV

Author

Adam, J., Adamczyk, L., Adams, J.R., Adkins, J.K., Agakishiev, G., Aggarwal, M.M., Ahammed, Z., Alekseev, I., Anderson, D.M., Aparin, A., Aschenauer, E.C., Ashraf, M.U., Atetalla, F.G., Attri, A., Averichev, G.S., Bairathi, V., Barish, K., Behera, A., Bellwied, R., Bhasin, A., Bielcik, J., Bielcikova, J., Bland, L.C., Bordyuzhin, I.G., Brandenburg, J.D., Brandin, A.V., Bueltmann, S., Butterworth, J., Caines, H., Calderón de la Barca Sánchez, M., Cebra, D., Chakaberia, I., Chaloupka, P., Chan, B.K., Chang, F-H., Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chen, D., Chen, J.H., Chen, X., Chen, Z., Cheng, J., Cherney, M., Chevalier, M., Choudhury, S., Christie, W., Chu, X., Crawford, H.J., Csanád, M., Daugherity, M., Dedovich, T.G., Deppner, I.M., Derevschikov, A.A., Didenko, L., Dong, X., Drachenberg, J.L., Dunlop, J.C., Edmonds, T., Elsey, N., Engelage, J., Eppley, G., Esumi, S., Evdokimov, O., Ewigleben, A., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, C.J., Feng, Y., Filip, P., Finch, E., Fisyak, Y., Francisco, A., Fulek, L., Gagliardi, C.A., Galatyuk, T., Geurts, F., Gibson, A., Gopal, K., Grosnick, D., Guryn, W., Hamad, A.I., Hamed, A., Harabasz, S., Harris, J.W., He, S., He, W., He, X.H., Heppelmann, S., Herrmann, N., Hoffman, E., Holub, L., Hong, Y., Horvat, S., Hu, Y., Huang, H.Z., Huang, S.L., Huang, T., Huang, X., Humanic, T.J., Huo, P., Igo, G., Isenhower, D., Jacobs, W.W., Jena, C., Jentsch, A., Ji, Y., Jia, J., Jiang, K., Jowzaee, S., Ju, X., Judd, E.G., Kabana, S., Kabir, M.L., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H.W., Keane, D., Kechechyan, A., Kelsey, M., Khyzhniak, Y.V., Kikoła, D.P., Kim, C., Kimelman, B., Kincses, D., Kinghorn, T.A., Kisel, I., Kiselev, A., Kocan, M., Kochenda, L., Kosarzewski, L.K., Kramarik, L., Kravtsov, P., Krueger, K., Kulathunga Mudiyanselage, N., Kumar, L., Kumar, S., Kunnawalkam Elayavalli, R., Kwasizur, J.H., Lacey, R., Lan, S., Landgraf, J.M., Lauret, J., Lebedev, A., Lednicky, R., Lee, J.H., Leung, Y.H., Li, C., Li, W., Li, X., Li, Y., Liang, Y., Licenik, R., Lin, T., Lin, Y., Lisa, M.A., Liu, F., Liu, H., Liu, P., Liu, T., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W.J., Longacre, R.S., Lukow, N.S., Luo, S., Luo, X., Ma, G.L., Ma, L., Ma, R., Ma, Y.G., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H.S., Mazer, J.A., Minaev, N.G., Mioduszewski, S., Mohanty, B., Mooney, I., Moravcova, Z., Morozov, D.A., Nagy, M., Nam, J.D., Nasim, Md., Nayak, K., Neff, D., Nelson, J.M., Nemes, D.B., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L.V., Nonaka, T., Nunes, A.S., Odyniec, G., Ogawa, A., Oh, S., Okorokov, V.A., Page, B.S., Pak, R., Pandav, A., Panebratsev, Y., Pawlik, B., Pawlowska, D., Pei, H., Perkins, C., Pinsky, L., Pintér, R.L., Pluta, J., Porter, J., Posik, M., Pruthi, N.K., Przybycien, M., Putschke, J., Qiu, H., Quintero, A., Radhakrishnan, S.K., Ramachandran, S., Ray, R.L., Reed, R., Ritter, H.G., Rogachevskiy, O.V., Romero, J.L., Ruan, L., Rusnak, J., Sahoo, N.R., Sako, H., Salur, S., Sandweiss, J., Sato, S., Schmidke, W.B., Schmitz, N., Schweid, B.R., Seck, F., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P.V., Shao, M., Sheikh, A.I., Shen, F., Shen, W.Q., Shi, S.S., Shou, Q.Y., Sichtermann, E.P., Sikora, R., Simko, M., Singh, J., Singha, S., Smirnov, N., Solyst, W., Sorensen, P., Spinka, H.M., Srivastava, B., Stanislaus, T.D.S., Stefaniak, M., Stewart, D.J., Strikhanov, M., Stringfellow, B., Suaide, A.A.P., Sumbera, M., Summa, B., Sun, X.M., Sun, X., Sun, Y., Surrow, B., Svirida, D.N., Szymanski, P., Tang, A.H., Tang, Z., Taranenko, A., Tarnowsky, T., Thomas, J.H., Timmins, A.R., Tlusty, D., Tokarev, M., Tomkiel, C.A., Trentalange, S., Tribble, R.E., Tribedy, P., Tripathy, S.K., Tsai, O.D., Tu, Z., Ullrich, T., Underwood, D.G., Upsal, I., Van Buren, G., Vanek, J., Vasiliev, A.N., Vassiliev, I., Videbæk, F., Vokal, S., Voloshin, S.A., Wang, F., Wang, G., Wang, J.S., Wang, P., Wang, Y., Wang, Z., Webb, J.C., Weidenkaff, P.C., Wen, L., Westfall, G.D., Wieman, H., Wissink, S.W., Witt, R., Wu, Y., Xiao, Z.G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q.H., Xu, Y.F., Xu, Y., Xu, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Yang, Z., Ye, Z., Yi, L., Yip, K., Zbroszczyk, H., Zha, W., Zhang, C., Zhang, D., Zhang, S., Zhang, X.P., Zhang, Y., Zhang, Z.J., Zhang, Z., Zhao, J., Zhong, C., Zhou, C., Zhu, X., Zhu, Z., Zurek, M., and Zyzak, M.

Abstract

We report results on the total and elastic cross sections in proton-proton collisions at s=200 GeV obtained with the Roman Pot setup of the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The elastic differential cross section was measured in the squared four-momentum transfer range 0.045≤−t≤0.135 GeV$^{2}$. The value of the exponential slope parameter B of the elastic differential cross section dσ/dt∼e−Bt in the measured −t range was found to be B=14.32±0.09(stat.)−0.28+0.13(syst.) GeV$^{−2}$. The total cross section σtot, obtained from extrapolation of the dσ/dt to the optical point at −t=0, is σtot=54.67±0.21(stat.)−1.38+1.28(syst.) mb. We also present the values of the elastic cross section σel=10.85±0.03(stat.)−0.41+0.49(syst.) mb, the elastic cross section integrated within the STAR t-range σeldet=4.05±0.01(stat.)−0.17+0.18(syst.) mb, and the inelastic cross section σinel=43.82±0.21(stat.)−1.44+1.37(syst.) mb. The results are compared with the world data.

Published
2020

140. Observation of the antimatter helium-4 nucleus

Author

Agakishiev, H., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Alekseev, I., Alford, J., Anderson, B. D., Anson, C. D., Arkhipkin, D., Averichev, G. S., Balewski, J., Beavis, D. R., Behera, N. K., Bellwied, R., Betancourt, M. J., Betts, R. R., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Biritz, B., Bland, L. C., Bordyuzhin, I. G., Borowski, W., Bouchet, J., Braidot, E., Brandin, A. V., Bridgeman, A., Brovko, S. G., Bruna, E., Bueltmann, S., Bunzarov, I., Burton, T. P., Cai, X. Z., Caines, H., Calderon, M., Cebra, D., Cendejas, R., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Chen, L., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, P., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Davila Leyva, A., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Derevschikov, A. A., Derradi de Souza, R., Didenko, L., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Dunlop, J. C., Efimov, L. G., Elnimr, M., Engelage, J., Eppley, G., Estienne, M., Eun, L., Evdokimov, O., Fatemi, R., Fedorisin, J., Fersch, R. G., Filip, P., Finch, E., Fine, V., Fisyak, Y., Gagliardi, C. A., Gangadharan, D. R., Geurts, F., Ghosh, P., Gorbunov, Y. N., Gordon, A., Grebenyuk, O. G., Grosnick, D., Guertin, S. M., Gupta, A., Gupta, S., Guryn, W., Haag, B., Hajkova, O., Hamed, A., Han, L-X., Harris, J. W., Hays-Wehle, J. P., Heinz, M., Heppelmann, S., Hirsch, A., Hjort, E., Hoffmann, G. W., Hofman, D. J., Huang, B., Huang, H. Z., Humanic, T. J., Huo, L., Igo, G., Jacobs, P., Jacobs, W. W., Jena, C., Jin, F., Joseph, J., Judd, E. G., Kabana, S., Kang, K., Kapitan, J., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kettler, D., Kikola, D. P., Kiryluk, J., Kisiel, A., Kizka, V., Klein, S. R., Knospe, A. G., Koetke, D. D., Kollegger, T., Konzer, J., Koralt, I., Koroleva, L., Korsch, W., Kotchenda, L., Kouchpil, V., Kravtsov, P., Krueger, K., Krus, M., Kumar, L., Kurnadi, P., Lamont, M. A. C., Landgraf, J. M., LaPointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Leight, W., LeVine, M. J., Li, C., Li, L., Li, N., Li, W., Li, X., Li, Y., Li, Z. M., Lisa, M. A., Liu, F., Liu, H., Liu, J., Ljubicic, T., Llope, W. J., Longacre, R. S., Love, W. A., Lu, Y., Lukashov, E. V., Luo, X., Ma, G. L., Ma, Y. G., Mahapatra, D. P., Majka, R., Mall, O. I., Manweiler, R., Margetis, S., Markert, C., Masui, H., Matis, H. S., Matulenko, Yu. A., McDonald, D., McShane, T. S., Meschanin, A., Milner, R., Minaev, N. G., Mioduszewski, S., Mitrovski, M. K., Mohammed, Y., Mohanty, B., Mondal, M. M., Morozov, B., Morozov, D. A., Munhoz, M. G., Mustafa, M. K., Naglis, M., Nandi, B. K., Nayak, T. K., Netrakanti, P. K., Nogach, L. V., Nurushev, S. B., Odyniec, G., Ogawa, A., Oh, K., Ohlson, A., Okorokov, V., Oldag, E. W., Olson, D., Pachr, M., Page, B. S., Pal, S. K., Pandit, Y., Panebratsev, Y., Pawlak, T., Pei, H., Peitzmann, T., Perkins, C., Peryt, W., Pile, P., Planinic, M., Ploskon, M. A., Pluta, J., Plyku, D., Poljak, N., Porter, J., Poskanzer, A. M., Potukuchi, B. V. K. S., Powell, C. B., Prindle, D., Pruneau, C., Pruthi, N. K., Pujahari, P. R., Putschke, J., Qiu, H., Raniwala, R., Raniwala, S., Ray, R. L., Redwine, R., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ruan, L., Rusnak, J., Sahoo, N. R., Sakrejda, I., Salur, S., Sandweiss, J., Sangaline, E., Sarkar, A., Schambach, J., Scharenberg, R. P., Schmah, A. M., Schmitz, N., Schuster, T. R., Seele, J., Seger, J., Selyuzhenkov, I., Seyboth, P., Shah, N., Shahaliev, E., Shao, M., Sharma, M., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Simon, F., Singaraju, R. N., Skoby, M. J., Smirnov, N., Solanki, D., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Staszak, D., Steadman, S. G., Stevens, J. R., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Subba, N. L., Sumbera, M., Sun, X. M., Sun, Y., Sun, Z., Surrow, B., Svirida, D. N., Symons, T. J. M., Szanto de Toledo, A., Takahashi, J., Tang, A. H., Tang, Z., Tarini, L. H., Tarnowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Tlusty, D., Tokarev, M., Trainor, T. A., Trentalange, S., Tribble, R. E., Tribedy, P., Tsai, O. D., Ullrich, T., Underwood, D. G., Van Buren, G., van Nieuwenhuizen, G., Vanfossen, J. A., Jr, Varma, R., Vasconcelos, G. M. S., Vasiliev, A. N., Videbaek, F., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Wada, M., Walker, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, Q., Wang, X. L., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Jr, Whitten C., Wieman, H., Wissink, S. W., Witt, R., Witzke, W., Wu, Y. F., Xiao, Z., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, W., Xu, Y., Xu, Z., Xue, L., Yang, Y., Yepes, P., Yip, K., Yoo, I-K., Zawisza, M., Zbroszczyk, H., Zhan, W., Zhang, J. B., Zhang, S., Zhang, W. M., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, F., Zhao, J., Zhong, C., Zhou, W., Zhu, X., Zhu, Y. H., Zoulkarneev, R., and Zoulkarneeva, Y.

Published
2011
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141. Results on total and elastic cross sections in proton–proton collisions at s=200 GeV

Author

Adam, J., primary, Adamczyk, L., additional, Adams, J.R., additional, Adkins, J.K., additional, Agakishiev, G., additional, Aggarwal, M.M., additional, Ahammed, Z., additional, Alekseev, I., additional, Anderson, D.M., additional, Aparin, A., additional, Aschenauer, E.C., additional, Ashraf, M.U., additional, Atetalla, F.G., additional, Attri, A., additional, Averichev, G.S., additional, Bairathi, V., additional, Barish, K., additional, Behera, A., additional, Bellwied, R., additional, Bhasin, A., additional, Bielcik, J., additional, Bielcikova, J., additional, Bland, L.C., additional, Bordyuzhin, I.G., additional, Brandenburg, J.D., additional, Brandin, A.V., additional, Bueltmann, S., additional, Butterworth, J., additional, Caines, H., additional, Calderón de la Barca Sánchez, M., additional, Cebra, D., additional, Chakaberia, I., additional, Chaloupka, P., additional, Chan, B.K., additional, Chang, F-H., additional, Chang, Z., additional, Chankova-Bunzarova, N., additional, Chatterjee, A., additional, Chen, D., additional, Chen, J.H., additional, Chen, X., additional, Chen, Z., additional, Cheng, J., additional, Cherney, M., additional, Chevalier, M., additional, Choudhury, S., additional, Christie, W., additional, Chu, X., additional, Crawford, H.J., additional, Csanád, M., additional, Daugherity, M., additional, Dedovich, T.G., additional, Deppner, I.M., additional, Derevschikov, A.A., additional, Didenko, L., additional, Dong, X., additional, Drachenberg, J.L., additional, Dunlop, J.C., additional, Edmonds, T., additional, Elsey, N., additional, Engelage, J., additional, Eppley, G., additional, Esumi, S., additional, Evdokimov, O., additional, Ewigleben, A., additional, Eyser, O., additional, Fatemi, R., additional, Fazio, S., additional, Federic, P., additional, Fedorisin, J., additional, Feng, C.J., additional, Feng, Y., additional, Filip, P., additional, Finch, E., additional, Fisyak, Y., additional, Francisco, A., additional, Fulek, L., additional, Gagliardi, C.A., additional, Galatyuk, T., additional, Geurts, F., additional, Gibson, A., additional, Gopal, K., additional, Grosnick, D., additional, Guryn, W., additional, Hamad, A.I., additional, Hamed, A., additional, Harabasz, S., additional, Harris, J.W., additional, He, S., additional, He, W., additional, He, X.H., additional, Heppelmann, S., additional, Herrmann, N., additional, Hoffman, E., additional, Holub, L., additional, Hong, Y., additional, Horvat, S., additional, Hu, Y., additional, Huang, H.Z., additional, Huang, S.L., additional, Huang, T., additional, Huang, X., additional, Humanic, T.J., additional, Huo, P., additional, Igo, G., additional, Isenhower, D., additional, Jacobs, W.W., additional, Jena, C., additional, Jentsch, A., additional, Ji, Y., additional, Jia, J., additional, Jiang, K., additional, Jowzaee, S., additional, Ju, X., additional, Judd, E.G., additional, Kabana, S., additional, Kabir, M.L., additional, Kagamaster, S., additional, Kalinkin, D., additional, Kang, K., additional, Kapukchyan, D., additional, Kauder, K., additional, Ke, H.W., additional, Keane, D., additional, Kechechyan, A., additional, Kelsey, M., additional, Khyzhniak, Y.V., additional, Kikoła, D.P., additional, Kim, C., additional, Kimelman, B., additional, Kincses, D., additional, Kinghorn, T.A., additional, Kisel, I., additional, Kiselev, A., additional, Kocan, M., additional, Kochenda, L., additional, Kosarzewski, L.K., additional, Kramarik, L., additional, Kravtsov, P., additional, Krueger, K., additional, Kulathunga Mudiyanselage, N., additional, Kumar, L., additional, Kumar, S., additional, Kunnawalkam Elayavalli, R., additional, Kwasizur, J.H., additional, Lacey, R., additional, Lan, S., additional, Landgraf, J.M., additional, Lauret, J., additional, Lebedev, A., additional, Lednicky, R., additional, Lee, J.H., additional, Leung, Y.H., additional, Li, C., additional, Li, W., additional, Li, X., additional, Li, Y., additional, Liang, Y., additional, Licenik, R., additional, Lin, T., additional, Lin, Y., additional, Lisa, M.A., additional, Liu, F., additional, Liu, H., additional, Liu, P., additional, Liu, T., additional, Liu, X., additional, Liu, Y., additional, Liu, Z., additional, Ljubicic, T., additional, Llope, W.J., additional, Longacre, R.S., additional, Lukow, N.S., additional, Luo, S., additional, Luo, X., additional, Ma, G.L., additional, Ma, L., additional, Ma, R., additional, Ma, Y.G., additional, Magdy, N., additional, Majka, R., additional, Mallick, D., additional, Margetis, S., additional, Markert, C., additional, Matis, H.S., additional, Mazer, J.A., additional, Minaev, N.G., additional, Mioduszewski, S., additional, Mohanty, B., additional, Mooney, I., additional, Moravcova, Z., additional, Morozov, D.A., additional, Nagy, M., additional, Nam, J.D., additional, Nasim, Md., additional, Nayak, K., additional, Neff, D., additional, Nelson, J.M., additional, Nemes, D.B., additional, Nie, M., additional, Nigmatkulov, G., additional, Niida, T., additional, Nogach, L.V., additional, Nonaka, T., additional, Nunes, A.S., additional, Odyniec, G., additional, Ogawa, A., additional, Oh, S., additional, Okorokov, V.A., additional, Page, B.S., additional, Pak, R., additional, Pandav, A., additional, Panebratsev, Y., additional, Pawlik, B., additional, Pawlowska, D., additional, Pei, H., additional, Perkins, C., additional, Pinsky, L., additional, Pintér, R.L., additional, Pluta, J., additional, Porter, J., additional, Posik, M., additional, Pruthi, N.K., additional, Przybycien, M., additional, Putschke, J., additional, Qiu, H., additional, Quintero, A., additional, Radhakrishnan, S.K., additional, Ramachandran, S., additional, Ray, R.L., additional, Reed, R., additional, Ritter, H.G., additional, Rogachevskiy, O.V., additional, Romero, J.L., additional, Ruan, L., additional, Rusnak, J., additional, Sahoo, N.R., additional, Sako, H., additional, Salur, S., additional, Sandweiss, J., additional, Sato, S., additional, Schmidke, W.B., additional, Schmitz, N., additional, Schweid, B.R., additional, Seck, F., additional, Seger, J., additional, Sergeeva, M., additional, Seto, R., additional, Seyboth, P., additional, Shah, N., additional, Shahaliev, E., additional, Shanmuganathan, P.V., additional, Shao, M., additional, Sheikh, A.I., additional, Shen, F., additional, Shen, W.Q., additional, Shi, S.S., additional, Shou, Q.Y., additional, Sichtermann, E.P., additional, Sikora, R., additional, Simko, M., additional, Singh, J., additional, Singha, S., additional, Smirnov, N., additional, Solyst, W., additional, Sorensen, P., additional, Spinka, H.M., additional, Srivastava, B., additional, Stanislaus, T.D.S., additional, Stefaniak, M., additional, Stewart, D.J., additional, Strikhanov, M., additional, Stringfellow, B., additional, Suaide, A.A.P., additional, Sumbera, M., additional, Summa, B., additional, Sun, X.M., additional, Sun, X., additional, Sun, Y., additional, Surrow, B., additional, Svirida, D.N., additional, Szymanski, P., additional, Tang, A.H., additional, Tang, Z., additional, Taranenko, A., additional, Tarnowsky, T., additional, Thomas, J.H., additional, Timmins, A.R., additional, Tlusty, D., additional, Tokarev, M., additional, Tomkiel, C.A., additional, Trentalange, S., additional, Tribble, R.E., additional, Tribedy, P., additional, Tripathy, S.K., additional, Tsai, O.D., additional, Tu, Z., additional, Ullrich, T., additional, Underwood, D.G., additional, Upsal, I., additional, Van Buren, G., additional, Vanek, J., additional, Vasiliev, A.N., additional, Vassiliev, I., additional, Videbæk, F., additional, Vokal, S., additional, Voloshin, S.A., additional, Wang, F., additional, Wang, G., additional, Wang, J.S., additional, Wang, P., additional, Wang, Y., additional, Wang, Z., additional, Webb, J.C., additional, Weidenkaff, P.C., additional, Wen, L., additional, Westfall, G.D., additional, Wieman, H., additional, Wissink, S.W., additional, Witt, R., additional, Wu, Y., additional, Xiao, Z.G., additional, Xie, G., additional, Xie, W., additional, Xu, H., additional, Xu, N., additional, Xu, Q.H., additional, Xu, Y.F., additional, Xu, Y., additional, Xu, Z., additional, Yang, C., additional, Yang, Q., additional, Yang, S., additional, Yang, Y., additional, Yang, Z., additional, Ye, Z., additional, Yi, L., additional, Yip, K., additional, Zbroszczyk, H., additional, Zha, W., additional, Zhang, C., additional, Zhang, D., additional, Zhang, S., additional, Zhang, X.P., additional, Zhang, Y., additional, Zhang, Z.J., additional, Zhang, Z., additional, Zhao, J., additional, Zhong, C., additional, Zhou, C., additional, Zhu, X., additional, Zhu, Z., additional, Zurek, M., additional, and Zyzak, M., additional

Published
2020
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142. Observation of an Antimatter Hypernucleus

Author

Abelev, B. I., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Alekseev, I., Anderson, B. D., Arkhipkin, D., Averichev, G. S., Balewski, J., Barnby, L S., Baumgart, S., Beavis, D. R., Bellwied, R., Betancourt, M. J., Betts, R. R., Bhasin, A., Bhati, A. K., Bichsel, H., Bielcik, J., Bielcikova, J., Biritz, B., Bland, L. C., Bonner, B. E., Bouchet, J., Braidot, E., Brandin, A. V., Bridgeman, A., Bruna, E., Bueltmann, S., Bunzarov, I., Burton, T. P., Cai, X. Z., Caines, H., Calderon, M., Catu, O., Cebra, D., Cendejas, R., Cervantes, M. C., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen, H. F., Chen, J. H., Chen, J. Y., Cheng, J., Cherney, M., Chikanian, A., Choi, K. E., Christie, W., Chung, P., Clarke, R. F., Codrington, M. J. M., Corliss, R., Cramer, J. G., Crawford, H. J., Das, D., Dash, S., Leyva, Davila A., De Silva, L. C., Debbe, R. R., Dedovich, T. G., DePhillips, M., Derevschikov, A. A., de Souza, Derradi R., Didenko, L., Djawotho, P., Dogra, S. M., Dong, X., Drachenberg, J. L., Draper, J. E., Dunlop, J. C., Dutta Mazumdar, M. R., Efimov, L G., Elhalhuli, E., Elnimr, M., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Eun, L, Evdokimov, O., Fachini, P., Fatemi, R., Fedorisin, J., Fersch, R. G., Filip, P., Finch, E., Fine, V., Fisyak, Y., Gagliardi, C. A., Gangadharan, D. R., Ganti, M. S., Garcia-Solis, E. J., Geromitsos, A., Geurts, F., Ghazikhanian, V., Ghosh, P., Gorbunov, Y. N., Gordon, A., Grebenyuk, O., Grosnick, D., Grube, B., Guertin, S. M., Gupta, A., Gupta, N., Guryn, W., Haag, B., Hamed, A., Han, L-X., Harris, J. W., Hays-Wehle, J. P., Heinz, M., Heppelmann, S., Hirsch, A., Hjort, E., Hoffman, A. M., Hoffmann, G. W., Hofman, D. J., Hollis, R. S., Huang, B., Huang, H. Z., Humanic, T. J., Huo, L., Igo, G., lordanova, A., Jacobs, P., Jacobs, W. W., Jakl, P., Jena, C., Jin, F., Jones, C. L, Jones, P. G., Joseph, J., Judd, E. G., Kabana, S., Kajimoto, K., Kang, K., Kapitan, J., Kauder, K., Keane, D., Kechechyan, A., Kettler, D., Kikola, D. P., Kiryluk, J., Kisiel, A., Klein, S. R., Knospe, A. G., Kocoloski, A., Koetke, D. D., Kollegger, T., Konzer, J., Kopytine, M., Koralt, I., Koroleva, L., Korsch, W., Kotchenda, L., Kouchpil, V., Kravtsov, P., Krueger, K., Krus, M., Kumar, L., Kurnadi, P., Lamont, M. A. C., Landgraf, J. M., LaPointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, C.-H., Lee, J. H., Leight, W., Levine, M. J., Li, C., Li, L, Li, N., Li, W., Li, X., Li, Y., Li, Z., Lin, G., Lindenbaum, S. J., Lisa, M. A., Liu, F., Liu, H., Liu, J., Ljubicic, T., Llope, W. J., Longacre, R. S., Love, W. A., Lu, Y., Luo, X., Ma, G. L, Ma, Y. G., Mahapatra, D. P., Majka, R., Mal, O. I., Mangotra, L. K., Manweiler, R., Margetis, S., Markert, C., Masui, H., Matis, H. S., Matulenko, Yu. A., McDonald, D., McShane, T. S., Meschanin, A., Milner, R., Minaev, N. G., Mioduszewski, S., Mischke, A., Mitrovski, M. K., Mohanty, B., Mondal, M. M., Morozov, B., Morozov, D. A., Munhoz, M. G., Nandi, B. K., Nattrass, C., Nayak, T. K., Nelson, J. M., Netrakanti, P. K., Ng, M. J., Nogach, L. V., Nurushev, S. B., Odyniec, G., Ogawa, A., Okada, H., Okorokov, V., Olson, D., Pachr, M., Page, B. S., Pal, S. K., Pandit, Y., Panebratsev, Y., Pawlak, T., Peitzmann, T., Perevoztchikov, V., Perkins, C., Peryt, W., Phatak, S. C., Pile, P., Planinic, M., Ploskon, M. A., Pluta, J., Plyku, D., Poljak, N., Poskanzer, A. M., Potukuchi, B. V. K. S., Powell, C. B., Prindle, D., Pruneau, C., Pruthi, N. K., Pujahari, P. R., Putschke, J., Qiu, H., Raniwala, R., Raniwala, S., Ray, R. L, Redwine, R., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Rose, A., Roy, C., Ruan, L, Sahoo, R., Sakai, S., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Sangaline, E., Schambach, J., Scharenberg, R. P., Schmitz, N., Schuster, T. R., Seele, J., Seger, J., Selyuzhenkov, I., Seyboth, P., Shahaliev, E., Shao, M., Sharma, M., Shi, S. S., Sichtermann, E. P., Simon, F., Singaraju, R. N., Skoby, M. J., Smirnov, N., Sorensen, P., Sowinski, J., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Staszak, D., Stevens, J. R., Stock, R., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Suarez, M. C., Subba, N. L, Sumbera, M., Sun, X. M., Sun, Y., Sun, Z., Surrow, B., Svirida, D. N., Symons, T. J. M., de Toledo, Szanto A, Takahashi, J., Tang, A. H., Tang, Z., Tarini, L. H., Tamowsky, T., Thein, D., Thomas, J. H., Tian, J., Timmins, A. R., Timoshenko, S., Tlusty, D., Tokarev, M., Trainor, T. A., Tram, V. N., Trentalange, S., Tribble, R. E., Tsai, O. D., Ulery, J., Ullrich, T., Underwood, D. G., Van Buren, G., van Leeuwen, M., van Nieuwenhuizen, G., Vanfossen, J. A, Jr., Varma, R., Vasconcelos, G. M. S., Vasiliev, A. N., Videbaek, F., Viyogi, Y. P., Vokal, S., Voloshin, S. A., Wada, M., Walker, M., Wang, F., Wang, G., Wang, H., Wang, J. S., Wang, Q., Wang, X. L., Wang, Y., Webb, G., Webb, J. C., Westfall, G. D., Jr., Whitten C., Wieman, H., Wingfield, E., Wissink, S. W., Witt, R., Wu, Y., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, W., Xu, Y., Xu, Z., Xue, L, Yang, Y., Yepes, P., Yip, K., Yoo, I.-K., Yue, Q., Zawisza, M., Zbroszczyk, H., Zhan, W., Zhang, J., Zhang, S., Zhang, W. M., Zhang, X. P., Zhang, Y., Zhang, Z. P., Zhao, J., Zhong, C., Zhou, J., Zhou, W., Zhu, X., Zhu, Y. H., Zoulkarneev, R., and Zoulkarneeva, Y.

Published
2010
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143. Search for a dark photon in electroproduced $e^{+}e^{-}$ pairs with the Heavy Photon Search experiment at JLab

Author

Adrian, P.H., Baltzell, N.A., Battaglieri, M., Bondí, M., Boyarinov, S., Bueltmann, S., Burkert, V.D., Calvo, D., Carpinelli, M., Celentano, A., Charles, G., Colaneri, L., Cooper, W., Cuevas, C., D’Angelo, A., Dashyan, N., De Napoli, M., De Vita, R., Deur, A., Dupre, R., Egiyan, H., Elouadrhiri, L., Essig, R., Fadeyev, V., Field, C., Filippi, A., Freyberger, A., Garçon, M., Gevorgyan, N., Girod, F.X., Graf, N., Graham, M., Griffioen, K.A., Grillo, A., Guidal, M., Herbst, R., Holtrop, M., Jaros, J., Kalicy, G., Khandaker, M., Kubarovsky, V., Leonora, E., Livingston, K., Maruyama, T., McCarty, K., McCormick, J., McKinnon, B., Moffeit, K., Moreno, O., Munoz Camacho, C., Nelson, T., Niccolai, S., Odian, A., Oriunno, M., Osipenko, M., Paremuzyan, R., Paul, S., Randazzo, N., Raydo, B., Reese, B., Rizzo, A., Schuster, P., Sharabian, Y.G., Simi, G., Simonyan, A., Sipala, V., Sokhan, D., Solt, M., Stepanyan, S., Szumila-Vance, H., Toro, N., Uemura, S., Ungaro, M., Voskanyan, H., Weinstein, L.B., Wojtsekhowski, B., Yale, B., Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, HPS, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Adrian, P, Baltzell, N, Battaglieri, M, Bondí, M, Boyarinov, S, Bueltmann, S, Burkert, V, Calvo, D, Carpinelli, M, Celentano, A, Charles, G, Colaneri, L, Cooper, W, Cuevas, C, D'Angelo, A, Dashyan, N, De Napoli, M, De Vita, R, Deur, A, Dupre, R, Egiyan, H, Elouadrhiri, L, Essig, R, Fadeyev, V, Field, C, Filippi, A, Freyberger, A, Garçon, M, Gevorgyan, N, Girod, F, Graf, N, Graham, M, Griffioen, K, Grillo, A, Guidal, M, Herbst, R, Holtrop, M, Jaros, J, Kalicy, G, Khandaker, M, Kubarovsky, V, Leonora, E, Livingston, K, Maruyama, T, Mccarty, K, Mccormick, J, Mckinnon, B, Moffeit, K, Moreno, O, Munoz Camacho, C, Nelson, T, Niccolai, S, Odian, A, Oriunno, M, Osipenko, M, Paremuzyan, R, Paul, S, Randazzo, N, Raydo, B, Reese, B, Rizzo, A, Schuster, P, Sharabian, Y, Simi, G, Simonyan, A, Sipala, V, Sokhan, D, Solt, M, Stepanyan, S, Szumila-Vance, H, Toro, N, Uemura, S, Ungaro, M, Voskanyan, H, Weinstein, L, Wojtsekhowski, B, and Yale, B

Subjects
photon: decay, photon: hidden sector, Physics and Astronomy (miscellaneous), accelerator, engineering, FOS: Physical sciences, S029HPH, coupling constant: upper limit, quantum electrodynamics: background, Newport News CEBAF Linac, photon: electroproduction, Settore FIS/04 - Fisica Nucleare e Subnucleare, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), photon: mass, photon: heavy, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], mass spectrum: (electron positron), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], luminosity: high, experimental results, Jefferson Lab
Abstract

The Heavy Photon Search experiment took its first data in a 2015 engineering run using a 1.056 GeV, 50 nA electron beam provided by CEBAF at the Thomas Jefferson National Accelerator Facility, searching for an electro-produced dark photon. Using 1.7 days (1170 nb$^{-1}$) of data, a search for a resonance in the $e^{+}e^{-}$ invariant mass distribution between 19 and 81 MeV/c$^2$ showed no evidence of dark photon decays above the large QED background, confirming earlier searches and demonstrating the full functionality of the experiment. Upper limits on the square of the coupling of the dark photon to the Standard Model photon are set at the level of 6$\times$10$^{-6}$. In addition, a search for displaced dark photon decays did not rule out any territory but resulted in a reliable analysis procedure that will probe hitherto unexplored parameter space with future, higher luminosity runs., Comment: 8 pages, Proceedings of the 39th International Conference on High Energy Physics (ICHEP 2018), 4-11 July, 2018, Seoul, Korea

Published
2018

145. The PP2PP experiment at RHIC: silicon detectors installed in Roman Pots for forward proton detection close to the beam

Author

Bültmann, S., Chen, W., Chiang, I.H., Chrien, R.E., Drees, A., Gill, R.L., Guryn, W., Landgraf, J., Li, Z., Ljubicic, T.A., Lynn, D., Pearson, C., Pile, P., Radeka, V., Rusek, A., Sakitt, M., Scheetz, R., Tepikian, S., Chwastowski, J., Pawlik, B., Haguenauer, M., Bogdanov, A.A., Nurushev, S.B., Runtzo, M.F., Strikhanov, M.N., Alekseev, I.G., Kanavets, V.P., Koroleva, L.I., Morozov, B.V., Svirida, D.N., Khodinov, A., Rijssenbeek, M., Tang, C., Whitehead, L., Yeung, S., De, K., Guler, N., Li, J., Öztürk, N., and Sandacz, A.

Published
2004
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146. Semi-inclusive π0 target and beam-target asymmetries from 6 GeV electron scattering with CLAS

Author

Jawalkar, S., Koirala, S., Avakian, H., Bosted, P., Griffioen, K.A., Keith, C., Kuhn, S.E., Adhikari, K.P., Adhikari, S., Adikaram, D., Akbar, Z., Amaryan, M.J., Anefalos Pereira, S., Ball, J., Baltzell, N.A., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A.S., Boiarinov, S., Briscoe, W.J., Brock, J., Brooks, W.K., Bültmann, S., Burkert, V.D., Cao, Frank Thanh, Carlin, C., Carman, D.S., Celentano, A., Charles, G., Chetry, T., Ciullo, G., Clark, L., Colaneri, L., Cole, P.L., Contalbrigo, M., Cortes, O., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., De Sanctis, E., Defurne, M., Deur, A., Djalali, C., Ddoge, G., Dupre, R., Egiyan, H., El Alaoui, A., El Fassi, L., Elouadrhiri, L., Eugenio, P., Fedotov, G., Fegan, S., Fersch, R., Filippi, A., Fleming, J.A., Forest, T.A., Fradi, A., Garçon, M., Ghandilyan, Y., Gilfoyle, G.P., Giovanetti, K.L., Girod, F.X., Gleason, C., Gohn, W., Golovatch, E., Gothe, R.W., Guidal, M., Guler, N., Guo, L., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Heddle, D., Hicks, K., Hollis, G., Holtrop, M., Hughes, S.M., Ilieva, Y., Ireland, D.G., Ishkhanov, B.S., Isupov, E.L., Jenkins, D., Jiang, H., Joo, K., Joosten, S., Keller, D., Khachatryan, G., Khachatryan, M., Khandaker, M., Kim, A., Kim, W., Klein, A., Klein, F.J., Kubarovsky, V., Kuleshov, S.V., Lanza, L., Lenisa, P., Livingston, K., Lu, H.Y., MacGregor, I.J.D., Markov, N., Mayer, M., McCracken, M.E., McKinnon, B., Meyer, C.A., Mineeva, T., Mirazita, M., Mokeev, V., Montgomery, R.A., Movsisyan, A., Munoz Camacho, C., Nadel-Turonski, P., Net, L.A., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Ostrovidov, A.I., Paremuzyan, R., Park, K., Pasyuk, E., Phelps, E., Phelps, W., Pierce, J., Pisano, S., Pogorelko, O., Price, J.W., Prok, Y., Protopopescu, D., Raue, B.A., Ripani, M., Riser, D., Rizzo, A., Rosner, G., Rossi, P., Sabatié, F., Salgado, C., Schumacher, R.A., Seder, E., Sharabian, Y.G., Simonyan, A., Skorodumina, Iu., Smith, G.D., Sober, D.I., Sokhan, D., Sparveris, N., Stankovic, I., Strauch, S., Taiuti, M., Ungaro, M., Voskanyan, H., Voutier, E., Walford, N.K., Watts, D.P., Wei, X., Weinstein, L.B., Wood, M.H., Zachariou, N., Zhang, J., and Zhao, Z.W.

Published
2018
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147. A polarized target for the CLAS detector

Author

Keith, C.D, Anghinolfi, M, Battaglieri, M, Bosted, P, Branford, D, Bültmann, S, Burkert, V.D, Comer, S.A, Crabb, D.G, De Vita, R, Dodge, G, Fatemi, R, Kashy, D, Kuhn, S.E, Prok, Y, Ripani, M, Seely, M.L, Taiuti, M, and Witherspoon, S

Published
2003
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148. Target and double spin asymmetries of deeply virtual π0 production with a longitudinally polarized proton target and CLAS

Author

Kim, A., Avakian, H., Burkert, V., Joo, K., Kim, W., Adhikari, K.P., Akbar, Z., Anefalos Pereira, S., Badui, R.A., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A.S., Boiarinov, S., Bosted, P., Briscoe, W.J., Brooks, W.K., Bültmann, S., Cao, T., Carman, D.S., Celentano, A., Chandavar, S., Charles, G., Chetry, T., Colaneri, L., Cole, P.L., Compton, N., Contalbrigo, M., Cortes, O., Crede, V., D'Angelo, A., Dashyan, N., De Vita, R., De Sanctis, E., Djalali, C., Egiyan, H., El Alaoui, A., El Fassi, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Fleming, J.A., Fradi, A., Garc con, M., Ghandilyan, Y., Gilfoyle, G.P., Giovanetti, K.L., Girod, F.X., Gohn, W., Golovatch, E., Gothe, R.W., Griffioen, K.A., Guo, L., Hafidi, K., Hanretty, C., Hattawy, M., Heddle, D., Hicks, K., Holtrop, M., Ilieva, Y., Ireland, D.G., Ishkhanov, B.S., Jenkins, D., Jiang, H., Jo, H.S., Joosten, S., Keller, D., Khachatryan, G., Khandaker, M., Klein, A., Klein, F.J., Kubarovsky, V., Kuhn, S.E., Kuleshov, S.V., Lanza, L., Lenisa, P., Lu, H.Y., MacGregor, I.J.D., Markov, N., Mattione, P., McCracken, M.E., McKinnon, B., Mokeev, V., Movsisyan, A., Munevar, E., Nadel-Turonski, P., Net, L.A., Niccolai, S., Osipenko, M., Ostrovidov, A.I., Paolone, M., Park, K., Pasyuk, E., Phelps, W., Pisano, S., Pogorelko, O., Price, J.W., Prok, Y., Ripani, M., Rizzo, A., Rosner, G., Rossi, P., Roy, P., Salgado, C., Schumacher, R.A., Seder, E., Sharabian, Y.G., Skorodumina, Iu., Smith, G.D., Sokhan, D., Sparveris, N., Stepanyan, S., Stoler, P., Strakovsky, I.I., Strauch, S., Sytnik, V., Taiuti, M., Torayev, B., Ungaro, M., Voskanyan, H., Voutier, E., Watts, D.P., Wei, X., Weinstein, L.B., Zachariou, N., Zana, L., and Zhang, J.

Published
2017
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149. A Radial Time Projection Chamber for $��$ detection in CLAS at JLab

Author

Dupr��, R., Stepanyan, S., Hattawy, M., Baltzell, N., Hafidi, K., Battaglieri, M., Bueltmann, S., Celentano, A., De Vita, R., Alaoui, A. El, Fassi, L. El, Fenker, H., Kosheleva, K., Kuhn, S., Musico, P., Minutoli, S., Oliver, M., Perrin, Y., Torayev, B., and Voutier, E.

Subjects
High Energy Physics - Experiment (hep-ex), Nuclear Theory, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

A new Radial Time Projection Chamber (RTPC) was developed at the Jefferson Laboratory to track low-energy nuclear recoils for the purpose of measuring exclusive nuclear reactions, such as coherent Deeply Virtual Compton Scattering and coherent meson production off $^4$He. In such processes, the $^4$He nucleus remains intact in the final state, however the CEBAF Large Acceptance Spectrometer (CLAS) cannot track the low energy $��$ particles. In 2009, we carried out measurements using the CLAS spectrometer supplemented by the RTPC positioned directly around a gaseous $^4$He target, allowing a detection threshold as low as 12$\sim$MeV for $^4$He. This article discusses the design, principle of operation, calibration methods and the performances of this RTPC.

Published
2017
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150. A radial time projection chamber for α detection in CLAS at JLab

Author

Dupré, R., primary, Stepanyan, S., additional, Hattawy, M., additional, Baltzell, N., additional, Hafidi, K., additional, Battaglieri, M., additional, Bueltmann, S., additional, Celentano, A., additional, De Vita, R., additional, El Alaoui, A., additional, El Fassi, L., additional, Fenker, H., additional, Kosheleva, K., additional, Kuhn, S., additional, Musico, P., additional, Minutoli, S., additional, Oliver, M., additional, Perrin, Y., additional, Torayev, B., additional, and Voutier, E., additional

Published
2018
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