Author: "Bueltmann, S" / Database: MEDLINE - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Bueltmann, S"' showing total 20 results

Start Over Author "Bueltmann, S" Database MEDLINE

20 results on '"Bueltmann, S"'

1. 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 MJ, Atac H, Avakian H, Gayoso CA, Baashen L, Baltzell NA, Barion L, Bashkanov M, Battaglieri M, Bedlinskiy I, Benkel B, Benmokhtar F, Bianconi A, Biselli AS, Bondi M, Booth WA, Bossù F, Boiarinov S, Brinkmann KT, Briscoe WJ, Bueltmann S, Bulumulla D, Burkert VD, Cao T, Carman DS, Carvajal JC, 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, Deur A, Diehl S, Dilks C, Djalali C, Dupre R, Egiyan H, Ehrhart M, Alaoui AE, Fassi LE, Elouadrhiri L, Fegan S, Filippi A, Gates K, Gavalian G, Ghandilyan Y, Gilfoyle GP, Girod FX, Glazier DI, Golubenko AA, Gosta G, Gothe RW, Gotra Y, Griffioen KA, Guidal M, Hafidi K, Hakobyan H, Hattawy M, Hauenstein F, Hayward TB, Heddle D, Hobart A, Holmberg DE, Holtrop M, Ilieva Y, Ireland DG, Isupov EL, Jo HS, Keller D, Khachatryan M, Khanal A, Kim W, Kripko A, Kubarovsky V, Kuhn SE, Lagerquist V, Lanza L, Kabir ML, Leali M, Lee S, Lenisa P, Li X, Livingston K, MacGregor IJD, Marchand D, Mascagna V, Matousek G, McKinnon B, McLauchlin C, Meziani ZE, Migliorati S, Milner RG, Mineeva T, Mirazita M, Mokeev V, Molina E, Camacho CM, 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, Radic A, Ramasubramanian N, Raue BA, Reed T, Richards J, Ripani M, Ritman J, Rossi P, Sabatié F, Salgado C, Schadmand S, Schmidt A, Scott MBC, Sharabian YG, Shirokov EV, Shrestha U, Simmerling P, 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, 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 Q^{2} 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
Full Text: View/download PDF

2. Observation of Correlations between Spin and Transverse Momenta in Back-to-Back Dihadron Production at CLAS12.

Author: Avakian H, Hayward TB, Kotzinian A, Armstrong WR, Atac H, Ayerbe Gayoso C, Baashen L, Baltzell NA, Barion L, Bashkanov M, Battaglieri M, Bedlinskiy I, Benkel B, Benmokhtar F, Bianconi A, Biondo L, Biselli AS, Bondi M, Boiarinov S, Bossù F, Brinkman KT, Briscoe WJ, Brooks WK, Bueltmann S, Bulumulla D, Burkert VD, Capobianco R, Carman DS, Carvajal JC, Celentano A, Chatagnon P, Chesnokov V, Chetry T, Ciullo G, Cole PL, 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 DI, Golubenko AA, Gosta G, Gothe RW, Gotra Y, Griffioen KA, Guidal M, Hakobyan H, Hattawy M, Hauenstein F, Heddle D, Hobart A, Holtrop M, Hyde CE, Ilieva Y, Ireland DG, Isupov EL, Jo HS, Johnston R, Joo K, Kabir ML, Keller D, Khachatryan M, Khanal A, Kim A, Kim W, Klimenko V, Kripko A, Kubarovsky V, Kuhn SE, Lagerquist V, Lanza L, Leali M, Lee S, Lenisa P, Li X, MacGregor IJD, Marchand D, Mascagna V, McKinnon B, Migliorati S, Mineeva T, Mirazita M, Mokeev V, Montgomery RA, 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 LL, Paremuzyan R, Pasyuk E, Paul SJ, Phelps W, Pilleux N, Pogorelko O, Pokhrel M, Poudel J, Price JW, Prok Y, Raue BA, Reed T, Richards J, Ripani M, Ritman J, Rossi P, Sabatié F, Salgado C, Schmidt A, Sharabian YG, Shirokov EV, Shrestha U, Simmerling P, Sokhan D, Sparveris N, Stepanyan S, Strakovsky II, Strauch S, Tan JA, Trotta N, Tyson R, Ungaro M, Vallarino S, Venturelli L, Voskanyan H, Vossen A, Voutier E, Watts DP, Wei X, Wishart R, Wood MH, Zachariou N, Zhao ZW, and Zurek M
Abstract: We report the first measurements of deep inelastic scattering spin-dependent azimuthal asymmetries in back-to-back dihadron electroproduction in the deep inelastic scattering process. In this reaction, two hadrons are produced in opposite hemispheres along the z axis in the virtual photon-target nucleon 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 nonzero sinΔϕ modulations in ep→e^{'}pπ^{+}X events, where Δϕ 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 unexplored 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.
Published: 2023
Full Text: View/download PDF

3. Directed flow of identified particles in Au+Au collisions at √[SNN]=200 GeV at RHIC.

Author: Adamczyk L, Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Banerjee A, Barnovska Z, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Brandin AV, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Butterworth J, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Cebra D, Cendejas R, Cervantes MC, Chaloupka P, Chattopadhyay S, Chen HF, Chen JH, Chen JY, Chen L, Cheng J, Cherney M, Chikanian A, Christie W, Chung P, Chwastowski J, Codrington MJ, Corliss R, Cramer JG, Crawford HJ, Cui X, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derradi de Souza R, Dhamija S, Didenko L, Ding F, Djawotho P, Dong X, Drachenberg JL, Draper JE, Du CM, Dunkelberger LE, Dunlop JC, Efimov LG, Elnimr M, Engelage J, Eppley G, Eun L, Evdokimov O, Fatemi R, Fedorisin J, Fersch RG, Filip P, Finch E, Fisyak Y, Gagliardi CA, Gangadharan DR, Geurts F, Gliske S, Gorbunov YN, Grebenyuk OG, Grosnick D, Gupta S, Guryn W, Haag B, Hajkova O, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heppelmann S, Hirsch A, Hoffmann GW, Hofman DJ, Horvat S, Huang B, Huang HZ, Huck P, Humanic TJ, Huo L, Igo G, Jacobs WW, Jena C, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Ke HW, Keane D, Kechechyan A, Kesich A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kravtsov P, Krueger K, Kumar L, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li W, Li X, Li X, Li Y, Li ZM, Lima LM, Lisa MA, Liu F, Ljubicic T, Llope WJ, Longacre RS, Lu Y, Luo X, Luszczak A, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Margetis S, Markert C, Masui H, Matis HS, McDonald D, McShane TS, Mioduszewski S, Mitrovski MK, Mohammed Y, Mohanty B, Morozov B, Munhoz MG, Mustafa MK, Naglis M, Nandi BK, Nasim M, Nayak TK, Nogach LV, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag EW, Oliveira RA, Olson D, Pachr M, Page BS, Pal SK, Pan YX, Pandit Y, Panebratsev Y, Pawlak T, Pawlik B, Pei H, Perkins C, Peryt W, Pile P, Planinic M, Pluta J, Plyku D, Poljak N, Porter J, Poskanzer AM, Powell CB, Prindle D, Pruneau C, Pruthi NK, Przybycien M, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Riley CK, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Ruan L, Rusnak J, Sahoo NR, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg RP, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Seyboth P, Shah N, Shahaliev E, Shao M, Sharma B, Sharma M, Shi SS, Shou QY, Sichtermann EP, Singaraju RN, Skoby MJ, Smirnov N, Solanki D, Sorensen P, deSouza UG, Spinka HM, Srivastava B, Stanislaus TD, Steadman SG, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Tlusty D, Tokarev M, Trainor TA, Trentalange S, Tribble RE, Tribedy P, Trzeciak BA, Tsai OD, Turnau J, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Vossen A, Wada M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Witzke W, Wu YF, Xiao Z, Xie W, Xin K, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yang Y, Yepes P, Yi Y, Yip K, Yoo IK, Zawisza M, Zbroszczyk H, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao F, Zhao J, Zhong C, Zhu X, Zhu YH, and Zoulkarneeva Y
Abstract: STAR's measurements of directed flow (v1) around midrapidity for π±, K±, KS0, p, and p[over ¯] in Au+Au collisions at √[sNN]=200 GeV are presented. A negative v1(y) slope is observed for most of produced particles (π±, K±, KS0, and p[over ¯]). In 5%-30% central collisions, a sizable difference is present between the v1(y) slope of protons and antiprotons, with the former being consistent with zero within errors. The v1 excitation function is presented. Comparisons to model calculations (RQMD, UrQMD, AMPT, QGSM with parton recombination, and a hydrodynamics model with a tilted source) are made. For those models which have calculations of v1 for both pions and protons, none of them can describe v1(y) for pions and protons simultaneously. The hydrodynamics model with a tilted source as currently implemented cannot explain the centrality dependence of the difference between the v1(y) slopes of protons and antiprotons.
Published: 2012
Full Text: View/download PDF

4. Strangeness enhancement in Cu-Cu and Au-Au collisions at √S(NN)=200 GeV.

Author: Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Barnby LS, Beavis DR, Behera NK, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Braidot E, Brandin AV, Bridgeman A, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Cai XZ, Caines H, Sánchez MC, Cebra D, Cendejas R, Cervantes MC, 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 MJ, Corliss R, Cramer JG, Crawford HJ, Cui X, Leyva AD, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derevschikov AA, de Souza RD, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Du CM, Dunlop JC, Efimov LG, Elnimr M, Engelage J, Eppley G, Estienne M, Eun L, Evdokimov O, Fatemi R, Fedorisin J, Fersch RG, Filip P, Finch E, Fine V, Fisyak Y, Gagliardi CA, Gangadharan DR, Geurts F, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk OG, Grosnick D, Gupta A, Gupta S, Guryn W, Haag B, Hajkova O, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs P, Jacobs WW, Jena C, Jin F, Jones PG, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Ke HW, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Knospe AG, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kouchpil V, Kravtsov P, Krueger K, Krus M, Kumar L, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li N, Li W, Li X, Li X, Li Y, Li ZM, Lima LM, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Lu Y, Lukashov EV, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Manweiler R, Margetis S, Markert C, Masui H, Matis HS, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mitrovski MK, Mohammed Y, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Mustafa MK, Naglis M, Nandi BK, Nayak TK, Nelson JM, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag EW, Oliveira RA, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Pei H, Peitzmann T, Perkins C, Peryt W, Pile P, Planinic M, Ploskon MA, Pluta J, Plyku D, Poljak N, Porter J, Poskanzer AM, Potukuchi BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Ruan L, Rusnak J, Sahoo NR, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg RP, Schaub J, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shah N, Shahaliev E, Shao M, Sharma M, Shi SS, Shou QY, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Solanki D, Sorensen P, deSouza UG, Spinka HM, Srivastava B, Stanislaus TD, Steadman SG, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, de Toledo AS, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Tlusty D, Tokarev M, Trainor TA, Trentalange S, Tribble RE, Tribedy P, Trzeciak BA, Tsai OD, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Witzke W, Wu YF, Xiao Z, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yang Y, Yepes P, Yip K, Yoo IK, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao F, Zhao J, Zhong C, Zhu X, Zhu YH, and Zoulkarneeva Y
Abstract: We report new STAR measurements of midrapidity yields for the Λ, Λ[over ¯], K(S)(0), Ξ(-), Ξ[over ¯](+), Ω(-), Ω[over ¯](+) particles in Cu+Cu collisions at √S(NN)==200 GeV, and midrapidity yields for the Λ, Λ[over ¯], K(S)(0) particles in Au+Au at √S(NN)==200 GeV. We show that, at a given number of participating nucleons, the production of strange hadrons is higher in Cu+Cu collisions than in Au+Au collisions at the same center-of-mass energy. We find that aspects of the enhancement factors for all particles can be described by a parametrization based on the fraction of participants that undergo multiple collisions.
Published: 2012
Full Text: View/download PDF

5. Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at √S(NN)=200 GeV.

Author: Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Barnby LS, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Braidot E, Brandin AV, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Cai XZ, Caines H, Sánchez MC, Cebra D, Cendejas R, Cervantes MC, Chaloupka P, Chattopadhyay S, Chen HF, Chen JH, Chen JY, Chen L, Cheng J, Cherney M, Chikanian A, Christie W, Chung P, Codrington MJ, Corliss R, Cramer JG, Crawford HJ, Cui X, Leyva AD, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derevschikov AA, de Souza RD, Didenko L, Djawotho P, Dong X, Drachenberg JL, Draper JE, Du CM, Dunlop JC, Efimov LG, Elnimr M, Engelage J, Eppley G, 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, Geurts F, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk OG, Grosnick D, Gupta A, Gupta S, Guryn W, Haag B, Hajkova O, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heppelmann S, Hirsch A, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs WW, Jena C, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Ke HW, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kravtsov P, Krueger K, Kumar L, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li W, Li X, Li X, Li Y, Li ZM, Lima LM, Lisa MA, Liu F, Ljubicic T, Llope WJ, Longacre RS, Lu Y, Lukashov EV, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Margetis S, Markert C, Masui H, Matis HS, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mitrovski MK, Mohammed Y, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Mustafa MK, Naglis M, Nandi BK, Nasim M, Nayak TK, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag EW, Oliveira RA, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Pei H, Peitzmann T, Perkins C, Peryt W, Pile P, Planinic M, Pluta J, Plyku D, Poljak N, Porter J, Poskanzer AM, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Ruan L, Rusnak J, Sahoo NR, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg RP, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shah N, Shahaliev E, Shao M, Sharma M, Shi SS, Shou QY, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Solanki D, Sorensen P, deSouza UG, Spinka HM, Srivastava B, Stanislaus TD, Steadman SG, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, de Toledo AS, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Tlusty D, Tokarev M, Trainor TA, Trentalange S, Tribble RE, Tribedy P, Trzeciak BA, Tsai OD, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Witzke W, Wu YF, Xiao Z, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yang Y, Yepes P, Yip K, Yoo IK, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao F, Zhao J, Zhong C, Zhu X, Zhu YH, and Zoulkarneeva Y
Abstract: We report transverse momentum (p(T)≤15 GeV/c) spectra of π(±), K(±), p, p[over ¯], K(S)(0), and ρ(0) at midrapidity in p+p and Au+Au collisions at √S(NN)=200 GeV. Perturbative QCD calculations are consistent with π(±) spectra in p+p collisions but do not reproduce K and p(p[over ¯]) spectra. The observed decreasing antiparticle-to-particle ratios with increasing p(T) provide experimental evidence for varying quark and gluon jet contributions to high-p(T) hadron yields. The relative hadron abundances in Au+Au at p(T)≳8 GeV/c are measured to be similar to the p+p results, despite the expected Casimir effect for parton energy loss.
Published: 2012
Full Text: View/download PDF

6. Measurement of the parity-violating longitudinal single-spin asymmetry for W± boson production in polarized proton-proton collisions at sqrt[s] = 500 GeV.

Author: Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Beavis DR, 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, Calderón de la Barca Sánchez M, 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, Codrington MJ, Corliss R, Cramer JG, Crawford HJ, Dash S, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Dutta Mazumdar MR, Efimov LG, Elnimr M, Engelage J, Eppley G, Erazmus B, Estienne M, Eun L, Evdokimov O, Fatemi R, Fedorisin J, Fersch RG, Finch E, Fine V, Fisyak Y, Gagliardi CA, Gangadharan DR, Ganti MS, Geromitsos A, Geurts F, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Guertin SM, Gupta A, Guryn W, Haag B, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs P, Jacobs WW, Jena C, Jin F, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Knospe AG, Kocoloski A, Koetke DD, 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 MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li N, Li W, Li X, Li X, Li Y, Li ZM, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Lukashov EV, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Masui H, Matis HS, Matulenko YA, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mischke A, Mitrovski MK, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Naglis M, Nandi BK, Nayak TK, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Ohlson A, Okorokov V, Oldag EW, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perkins C, Peryt W, Phatak SC, Pile P, Planinic M, Ploskon MA, Pluta J, Plyku D, Poljak N, Poskanzer AM, Potukuchi BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Ruan L, Sakai S, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sangaline E, Schambach J, Scharenberg RP, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shahaliev E, Shao M, Sharma M, Shi SS, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Sorensen P, Spinka HM, Srivastava B, Stanislaus TD, Staszak D, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Trainor TA, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, van Nieuwenhuizen G, Vanfossen JA, Varma R Jr, Vasconcelos GM, Vasiliev AN, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu YF, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao J, Zhong C, Zhou W, Zhu X, Zhu YH, Zoulkarneev R, and Zoulkarneeva Y
Abstract: We report the first measurement of the parity-violating single-spin asymmetries for midrapidity decay positrons and electrons from W+ and W- boson production in longitudinally polarized proton-proton collisions at sqrt[s] = 500 GeV by the STAR experiment at RHIC. The measured asymmetries, A(L)(W+) = -0.27 ± 0.10(stat.) ± 0.02(syst.) ± 0.03(norm.) and A(L)(W-) = 0.14 ± 0.19(stat.) ± 0.02(syst.) ± 0.01(norm.), are consistent with theory predictions, which are large and of opposite sign. These predictions are based on polarized quark and antiquark distribution functions constrained by polarized deep-inelastic scattering measurements.
Published: 2011
Full Text: View/download PDF

7. [Effect of applanation tonometry on precision of biometry measurements].

Author: Rabsilber TM, Bueltmann S, Holzer MP, and Auffarth GU
Subjects: Adult, Aged, Aged, 80 and over, Female, Humans, Male, Middle Aged, Preoperative Care, Reproducibility of Results, Sensitivity and Specificity, Biometry methods, Cataract diagnosis, Cataract Extraction methods, Tonometry, Ocular methods
Abstract: Background: The aim of this study was to investigate the effect of applanation tonometry on the accuracy of biometric measurements and the reproducibility of keratometric measurements., Patients and Methods: In this clinical prospective study a total of 16 patients were enrolled who presented for cataract surgery on 30 eyes. Biometry measurements were made using an IOLMaster optical biometer before and 10 min after standard Goldmann applanation tonometry. Local anesthesia was achieved by administering one drop of fluorescein-stained oxybuprocaine 0.4%., Results: The mean absolute difference of intraocular lens power for emmetropia was 0.31 ± 0.33 D (range -1.56 to +1.12 D) and the mean standard deviation for R1 and R2 (n=28 eyes) was 0.014 ± 0.013 mm before and 0.024 ± 0.021 mm after tonometry. This difference was statistically significant (t-test, p<0.01). Moderate to severe irregular corneal surfaces were noted in some cases after tonometry., Conclusions: Local anesthesia and applanation tonometry reduced the accuracy of IOL power calculations with differences exceeding ± 1 D and the reliability of consecutive keratometry measurements decreased significantly. Therefore, it is advisable to perform biometry measurements at the very beginning of the preoperative examination.
Published: 2011
Full Text: View/download PDF

8. Measurement of the bottom quark contribution to nonphotonic electron production in p + p collisions at √s=200 GeV.

Author: Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson D, 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, Calderón de la Barca Sánchez 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 MJ, Corliss R, Cramer JG, Crawford HJ, Das D, Dash S, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Dutta Mazumdar 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-Solis EJ, Geromitsos A, Geurts F, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Guertin SM, Gupta A, Guryn W, Haag B, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs P, Jacobs WW, Jena C, Jin F, Jones CL, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kauder K, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Knospe AG, Kocoloski A, Koetke DD, 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 MA, Landgraf JM, Lapointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, Levine MJ, Li C, Li L, Li N, Li W, Li X, Li X, Li Y, Li ZM, Lin G, Lin XY, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Lukashov EV, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Masui H, Matis HS, Matulenko YA, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mischke A, Mitrovski MK, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okorokov V, Oldag EW, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Pile P, Planinic M, Ploskon MA, Pluta J, Plyku D, Poljak N, Poskanzer AM, Potukuchi BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Sahoo R, Sakai S, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sangaline E, Schambach J, Scharenberg RP, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shahaliev E, Shao M, Sharma M, Shi SS, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stanislaus TD, Staszak D, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Trainor TA, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbaek F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu YF, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao J, Zhong C, Zhou J, Zhou W, Zhu X, Zhu YH, Zoulkarneev R, and Zoulkarneeva Y
Abstract: The contribution of B meson decays to nonphotonic electrons, which are mainly produced by the semileptonic decays of heavy-flavor mesons, in p + p collisions at √s=200 GeV has been measured using azimuthal correlations between nonphotonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of pT≥5 GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high pT.
Published: 2010
Full Text: View/download PDF

9. Three-particle coincidence of the long range pseudorapidity correlation in high energy nucleus-nucleus collisions.

Author: Abelev BI, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Anderson BD, Arkhipkin D, Averichev GS, Balewski J, Barannikova O, 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, Bnzarov I, Bonner BE, Bouchet J, Braidot E, Brandin AV, Bridgeman A, Bruna E, Bueltmann S, Burton TP, Cai XZ, Caines H, Calderón de la Barca Sánchez 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 MJ, Corliss R, Cramer JG, Crawford HJ, Das D, Dash S, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, DePhillips M, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Dutta Mazumdar MR, Efimov LG, Elhalhuli E, Elnimr M, Engelage J, Eppley G, Erazmus B, Estienne M, Eun L, Fachini P, Fatemi R, Fedorisin J, Fersch RG, Filip P, Finch E, Fine V, Fisyak Y, Gagliardi CA, Gangadharan DR, Ganti MS, Garcia-Solis EJ, Geromitsos A, Geurts F, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Huang HZ, Humanic TJ, Huo L, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jena C, Jin F, Jones CL, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kauder K, Keane D, Kechechyan A, Kettler D, Khodyrev VY, Kikola DP, Kiryluk J, Kisiel A, Knospe AG, Kocoloski A, Koetke DD, Kollegger T, Konzer J, Kopytine M, Koralt I, Korsch W, Kotchenda L, Kouchpil V, Kravtsov P, Kravtsov VI, Krueger K, Krus M, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li N, Li W, Li X, Li X, Li Y, Li Z, Lin G, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Ludlam T, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Masui H, Matis HS, Matulenko YA, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mischke A, Mitrovski MK, Mohanty B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okada H, Okorokov V, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Pile P, Planinic M, Ploskon MA, Pluta J, Plyku D, Poljak N, Poskanzer AM, Potukuchi BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Rehberg JM, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Sahoo R, Sakai S, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sangaline E, Schambach J, Scharenberg RP, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shahaliev E, Shao M, Sharma M, Shi SS, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stanislaus TD, Staszak D, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, van Leeuwen M, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbæk F, Viyogi YP, Vokal S, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang X, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wingfield E, Wissink SW, Witt R, Wu Y, Xie W, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao J, Zhong C, Zhou J, Zhou W, Zhu X, Zhu YH, Zoulkarneev R, and Zoulkarneeva Y
Abstract: We report the first three-particle coincidence measurement in pseudorapidity (Δη) between a high transverse momentum (p⊥) trigger particle and two lower p⊥ associated particles within azimuth |Δϕ|<0.7 in square root of s(NN)=200 GeV d+Au and Au+Au collisions. Charge ordering properties are exploited to separate the jetlike component and the ridge (long range Δη correlation). The results indicate that the correlation of ridge particles are uniform not only with respect to the trigger particle but also between themselves event by event in our measured Δη. In addition, the production of the ridge appears to be uncorrelated to the presence of the narrow jetlike component.
Published: 2010
Full Text: View/download PDF

10. Higher moments of net proton multiplicity distributions at RHIC.

Author: Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, 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, Calderón de la Barca Sánchez 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 MJ, Corliss R, Cramer JG, Crawford HJ, Das D, Dash S, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Dutta Mazumdar 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-Solis EJ, Geromitsos A, Geurts F, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Guertin SM, Gupta A, Gupta N, Guryn W, Haag B, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs P, Jacobs WW, Jena C, Jin F, Jones CL, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kauder K, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Klein SR, Knospe AG, Kocoloski A, Koetke DD, 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 MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li N, Li W, Li X, Li X, Li Y, Li ZM, Lin G, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Lukashov EV, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Masui H, Matis HS, Matulenko YA, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mischke A, Mitrovski MK, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okorokov V, Oldag EW, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Pile P, Planinic M, Ploskon MA, Pluta J, Plyku D, Poljak N, Poskanzer AM, Potukuchi BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Sahoo R, Sakai S, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sangaline E, Schambach J, Scharenberg RP, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shahaliev E, Shao M, Sharma M, Shi SS, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stanislaus TD, Staszak D, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbaek F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu YF, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao J, Zhong C, Zhou J, Zhou W, Zhu X, Zhu YH, Zoulkarneev R, and Zoulkarneeva Y
Abstract: We report the first measurements of the kurtosis (κ), skewness (S), and variance (σ2) of net-proton multiplicity (Np-Np) distributions at midrapidity for Au+Au collisions at square root of s(NN)=19.6, 62.4, and 200 GeV corresponding to baryon chemical potentials (μB) between 200 and 20 MeV. Our measurements of the products κσ2 and Sσ, which can be related to theoretical calculations sensitive to baryon number susceptibilities and long-range correlations, are constant as functions of collision centrality. We compare these products with results from lattice QCD and various models without a critical point and study the square root of s(NN) dependence of κσ2. From the measurements at the three beam energies, we find no evidence for a critical point in the QCD phase diagram for μB below 200 MeV.
Published: 2010
Full Text: View/download PDF

11. Observation of an antimatter hypernucleus.

Author: Abelev BI, 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, Calderon 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 MJ, Corliss R, Cramer JG, Crawford HJ, Das D, Dash S, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, DePhillips M, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Dutta Mazumdar 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-Solis EJ, Geromitsos A, Geurts F, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Gupta A, Gupta N, Guryn W, Haag B, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jena C, Jin F, Jones CL, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kauder K, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Klein SR, Knospe AG, Kocoloski A, Koetke DD, 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 MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, Levine MJ, Li C, Li L, Li N, Li W, Li X, Li Y, Li Z, Lin G, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mal OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Masui H, Matis HS, Matulenko YA, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mischke A, Mitrovski MK, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okada H, Okorokov V, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Pile P, Planinic M, Ploskon MA, Pluta J, Plyku D, Poljak N, Poskanzer AM, Potukuchi BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Sahoo R, Sakai S, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sangaline E, Schambach J, Scharenberg RP, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shahaliev E, Shao M, Sharma M, Shi SS, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stanislaus TD, Staszak D, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Trainor TA, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbaek F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wingfield E, Wissink SW, Witt R, Wu Y, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang J, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao J, Zhong C, Zhou J, Zhou W, Zhu X, Zhu YH, Zoulkarneev R, and Zoulkarneeva Y
Abstract: Nuclear collisions recreate conditions in the universe microseconds after the Big Bang. Only a very small fraction of the emitted fragments are light nuclei, but these states are of fundamental interest. We report the observation of antihypertritons--comprising an antiproton, an antineutron, and an antilambda hyperon--produced by colliding gold nuclei at high energy. Our analysis yields 70 +/- 17 antihypertritons ((Lambda)(3)-H) and 157 +/- 30 hypertritons (Lambda3H). The measured yields of Lambda3H ((Lambda)(3)-H) and 3He (3He) are similar, suggesting an equilibrium in coordinate and momentum space populations of up, down, and strange quarks and antiquarks, unlike the pattern observed at lower collision energies. The production and properties of antinuclei, and of nuclei containing strange quarks, have implications spanning nuclear and particle physics, astrophysics, and cosmology.
Published: 2010
Full Text: View/download PDF

12. Azimuthal charged-particle correlations and possible local strong parity violation.

Author: Abelev BI, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Anderson BD, Arkhipkin D, Averichev GS, Balewski J, Barannikova O, Barnby LS, Baumgart S, Beavis DR, Bellwied R, Benedosso F, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Biritz B, Bland LC, Bnzarov I, Bonner BE, Bouchet J, Braidot E, Brandin AV, Bridgeman A, Bruna E, Bueltmann S, Burton TP, Cai XZ, Caines H, Calderón de la Barca Sánchez 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 MJ, Corliss R, Cormier TM, Cosentino MR, Cramer JG, Crawford HJ, Das D, Dash S, Daugherity M, De Silva LC, Dedovich TG, DePhillips M, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dzhordzhadze V, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Dutta Mazumdar MR, Efimov LG, 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 CA, Gangadharan DR, Ganti MS, Garcia-Solis EJ, Geromitsos A, Geurts F, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Guimaraes KS, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Harris JW, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Huang HZ, Humanic TJ, Huo L, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jena C, Jin F, Jones CL, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kauder K, Keane D, Kechechyan A, Kettler D, Khodyrev VY, Kikola DP, Kiryluk J, Kisiel A, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Konzer J, Kopytine M, Koralt I, Korsch W, Kotchenda L, Kouchpil V, Kravtsov P, Kravtsov VI, Krueger K, Krus M, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, LeVine MJ, Li C, Li N, Li Y, Lin G, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Liu L, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Ludlam T, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Masui H, Matis HS, Matulenko YA, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mischke A, Mohanty B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okada H, Okorokov V, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Pile P, Planinic M, Ploskon MA, Pluta J, Plyku D, Poljak N, Poskanzer AM, Potukuchi BV, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ridiger A, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Russcher MJ, Sahoo R, Sakai S, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Schambach J, Scharenberg RP, Schmitz N, Seele J, Seger J, Selyuzhenkov I, Semertzidis Y, Seyboth P, Shahaliev E, Shao M, Sharma M, Shi SS, Shi XH, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stanislaus TD, Staszak D, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbaek F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang X, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu Y, Xie W, Xu N, Xu QH, Xu Y, Xu Z, Yang Y, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao Y, Zhong C, Zhou J, Zhu X, Zoulkarneev R, Zoulkarneeva Y, and Zuo JX
Abstract: Parity-odd domains, corresponding to nontrivial topological solutions of the QCD vacuum, might be created during relativistic heavy-ion collisions. These domains are predicted to lead to charge separation of quarks along the system's orbital momentum axis. We investigate a three-particle azimuthal correlator which is a P even observable, but directly sensitive to the charge separation effect. We report measurements of charged hadrons near center-of-mass rapidity with this observable in Au + Au and Cu + Cu collisions at square root of s(NN) = 200 GeV using the STAR detector. A signal consistent with several expectations from the theory is detected. We discuss possible contributions from other effects that are not related to parity violation.
Published: 2009
Full Text: View/download PDF

13. Growth of long range forward-backward multiplicity correlations with centrality in Au + Au collisions at square root of sNN = 200 GeV.

Author: Abelev BI, Aggarwal MM, Ahammed Z, Anderson BD, Arkhipkin D, Averichev GS, Balewski J, Barannikova O, Barnby LS, Baudot J, Baumgart S, Beavis DR, Bellwied R, Benedosso F, Betancourt MJ, Betts RR, 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 E, Bueltmann S, Burton TP, Bystersky M, Cai XZ, Caines H, Calderón de la Barca Sánchez 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, Clarke RF, Codrington MJ, Corliss R, Cormier TM, Cosentino MR, Cramer JG, Crawford HJ, Das D, Dash S, Daugherity M, De Silva LC, Dedovich TG, DePhillips M, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Du F, Dunlop JC, Dutta Mazumdar MR, 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, Gangadharan DR, Ganti MS, Garcia-Solis EJ, Geromitsos A, Geurts F, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Guimaraes KS, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Harris JW, He W, Heinz M, Heppelmann S, Hippolyte B, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Huang HZ, Humanic TJ, Huo L, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jena C, Jin F, Jones CL, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Keane D, Kechechyan A, Kettler D, Khodyrev VY, Kikola DP, Kiryluk J, Kisiel A, Knospe AG, Kocoloski A, Koetke DD, Kopytine M, Korsch W, Kotchenda L, Kouchpil V, Kravtsov P, Kravtsov VI, Krueger K, Krus M, Kuhn C, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, Levine MJ, Li N, Li C, Li Y, Lin G, Lindenbaum SJ, Lisa MA, Liu F, Liu J, Liu L, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Ludlam T, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Matis HS, Matulenko YA, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mischke A, Mitchell J, Mohanty B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okada H, Okorokov V, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Planinic M, Pluta J, Poljak N, Poskanzer AM, Potukuchi BV, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Raniwala R, Raniwala S, Redwine R, Reed R, Ridiger A, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Russcher MJ, Sahoo R, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sarsour M, Schambach J, Scharenberg RP, Schmitz N, Seger J, Selyuzhenkov I, Seyboth P, Shabetai A, Shahaliev E, Shao M, Sharma M, Shi SS, Shi XH, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Snellings R, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stadnik A, Stanislaus TD, Staszak D, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Tram VN, Trattner AL, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, Vander Molen AM, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasilevski IM, Vasiliev AN, Videbaek F, Vigdor SE, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang JS, Wang Q, Wang X, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu Y, Xie W, Xu N, Xu QH, Xu Y, Xu Z, Yang Y, Yepes P, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao Y, Zhong C, Zhou J, Zoulkarneev R, Zoulkarneeva Y, and Zuo JX
Abstract: Forward-backward multiplicity correlation strengths have been measured with the STAR detector for Au + Au and p + p collisions at square root of s(NN) = 200 GeV. Strong short- and long-range correlations (LRC) are seen in central Au + Au collisions. The magnitude of these correlations decrease with decreasing centrality until only short-range correlations are observed in peripheral Au + Au collisions. Both the dual parton model (DPM) and the color glass condensate (CGC) predict the existence of the long-range correlations. In the DPM, the fluctuation in the number of elementary (parton) inelastic collisions produces the LRC. In the CGC, longitudinal color flux tubes generate the LRC. The data are in qualitative agreement with the predictions of the DPM and indicate the presence of multiple parton interactions.
Published: 2009
Full Text: View/download PDF

14. K/pi Fluctuations at relativistic energies.

Author: Abelev BI, Aggarwal MM, Ahammed Z, Anderson BD, Arkhipkin D, Averichev GS, Balewski J, Barannikova O, Barnby LS, Baudot J, Baumgart S, Beavis DR, Bellwied R, Benedosso F, Betancourt MJ, Betts RR, 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 E, Bueltmann S, Burton TP, Bystersky M, Cai XZ, Caines H, de la Barca Sánchez MC, 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, Clarke RF, Codrington MJ, Corliss R, Cormier TM, Cosentino MR, Cramer JG, Crawford HJ, Das D, Das S, Dash S, Daugherity M, De Silva LC, Dedovich TG, DePhillips M, Derevschikov AA, de Souza RD, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Dunlop JC, Mazumdar MR, 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, Gangadharan DR, Ganti MS, Garcia-Solis EJ, Geromitsos A, Geurts F, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Guimaraes KS, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Harris JW, He W, Heinz M, Heppelmann S, Hippolyte B, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Huang HZ, Humanic TJ, Huo L, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jena C, Jin F, Jones CL, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Keane D, Kechechyan A, Kettler D, Khodyrev VY, Kikola DP, Kiryluk J, Kisiel A, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Kopytine M, Korsch W, Kotchenda L, Kouchpil V, Kravtsov P, Kravtsov VI, Krueger K, Krus M, Kuhn C, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Lee JH, Leight W, LeVine MJ, Li C, Li N, Li Y, Lin G, Lindenbaum SJ, Lisa MA, Liu F, Liu J, Liu L, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Ludlam T, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Matis HS, Matulenko YA, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mischke A, Mohanty B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okada H, Okorokov V, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Pile P, Planinic M, Pluta J, Plyku D, Poljak N, Poskanzer AM, Potukuchi BV, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Raniwala R, Raniwala S, Redwine R, Reed R, Ridiger A, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Russcher MJ, Sahoo R, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sarsour M, Schambach J, Scharenberg RP, Schmitz N, Seger J, Selyuzhenkov I, Seyboth P, Shabetai A, Shahaliev E, Shao M, Sharma M, Shi SS, Shi XH, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Snellings R, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stadnik A, Stanislaus TD, Staszak D, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Symons TJ, de Toledo AS, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Tram VN, Trattner AL, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, Molen AM, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasilevski IM, Vasiliev AN, Videbaek F, Vigdor SE, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang JS, Wang Q, Wang X, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu Y, Xie W, Xu N, Xu QH, Xu Y, Xu Z, Yang P, Yepes P, Yip K, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao Y, Zhong C, Zhou J, Zoulkarneev R, Zoulkarneeva Y, and Zuo JX
Abstract: We report K/pi fluctuations from Au + Au collisions at sqrt[s(NN)]= 19.6, 62.4, 130, and 200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. K/pi fluctuations in central collisions show little dependence on incident energy and are on the same order as those from NA49 at the Super Proton Synchrotron in central Pb + Pb collisions at sqrt[s(NN)]=12.3 and 17.3 GeV. We report results for the collision centrality dependence of K/pi fluctuations and results for charge-separated fluctuations. We observe that the K/pi fluctuations scale with the charged particle multiplicity density.
Published: 2009
Full Text: View/download PDF

15. Observation of two-source interference in the photoproduction reaction AuAu --> AuAurho0.

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, Betancourt MJ, 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 E, Bueltmann S, Burton TP, Bystersky M, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Callner J, 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 SU, Clarke RF, Codrington MJ, Coffin JP, Corliss R, Cormier TM, Cosentino MR, Cramer JG, Crawford HJ, Das D, Dash S, Daugherity M, De Silva C, Dedovich TG, Dephillips M, Derevschikov AA, Derradi de Souza R, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Du F, Dunlop JC, Dutta Mazumdar MR, 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, Gangadharan DR, Ganti MS, Garcia-Solis E, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Guimaraes KS, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Harris JW, He W, Heinz M, Heppelmann S, Hippolyte B, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Huang HZ, Humanic TJ, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jin F, Jones CL, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kaplan M, Keane D, Kechechyan A, Kettler D, Khodyrev VY, Kikola DP, Kiryluk J, Kisiel A, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Kopytine M, Kotchenda L, Kouchpil V, Kravtsov P, Kravtsov VI, Krueger K, Krus M, Kuhn C, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, Lapointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Leight W, Levine MJ, Li C, Li N, Li Y, Lin G, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Liu L, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Ludlam T, Lynn D, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Matis HS, Matulenko YA, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mischke A, Mitchell J, Mohanty B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Nepali C, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okada H, Okorokov V, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Planinic M, Pluta J, Poljak N, Poskanzer AM, Potukuchi BV, Prindle D, Pruneau C, Pruthi NK, Putschke J, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ridiger A, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Russcher MJ, Rykov V, Sahoo R, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sarsour M, Schambach J, Scharenberg RP, Schmitz N, Seger J, Selyuzhenkov I, Seyboth P, Shabetai A, Shahaliev E, Shao M, Sharma M, Shi SS, Shi XH, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Snellings R, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stadnik A, Stanislaus TD, Staszak D, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Trainor TA, Tram VN, Trattner AL, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, Vander Molen AM, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasilevski IM, Vasiliev AN, Videbaek F, Vigdor SE, Viyogi YP, Vokal S, Voloshin SA, Wada M, Waggoner WT, Walker M, Wang F, Wang G, Wang JS, Wang Q, Wang X, Wang XL, Wang Y, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu Y, Xie W, Xu N, Xu QH, Xu Y, Xu Z, Yepes P, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang H, Zhang S, Zhang WM, Zhang Y, Zhang ZP, Zhao Y, Zhong C, Zhou J, Zoulkarneev R, Zoulkarneeva Y, and Zuo JX
Abstract: In ultraperipheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a rho{0}. The rho{0} production occurs in two well-separated (median impact parameters of 20 and 40 F for the cases considered here) nuclei, so the system forms a two-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing rho{0} production. Since the rho{0} decays before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled nonlocal wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is 87%+/-5%(stat.)+/-8%(syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors of 23% at the 90% confidence level.
Published: 2009
Full Text: View/download PDF

16. Indications of conical emission of charged hadrons 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 E, Bueltmann S, Burton TP, Bystersky M, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Callner J, 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 SU, Clarke RF, Codrington MJ, Coffin JP, Cormier TM, Cosentino MR, Cramer JG, Crawford HJ, Das D, Dash S, Daugherity M, De Silva C, de Moura MM, 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, Dutta Mazumdar MR, 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, Gangadharan DR, Ganti MS, Garcia-Solis E, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Guimaraes KS, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Harris JW, He W, Heinz M, Heppelmann S, Hippolyte B, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Huang HZ, Humanic TJ, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jin F, Jones PG, Joseph J, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kaplan M, Keane D, Kechechyan A, Kettler D, Khodyrev VY, Kiryluk J, Kisiel A, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Kopytine M, Kotchenda L, Kouchpil V, Kravtsov P, Kravtsov VI, Krueger K, Krus M, Kuhn C, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, Lapointe S, Lauret J, Lebedev A, Lednicky R, Lee CH, Levine MJ, Li C, Li Y, Lin G, Lin X, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Liu L, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Ludlam T, Lynn D, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Mangotra LK, Manweiler R, Margetis S, Markert C, Matis HS, Matulenko YA, McShane TS, Meschanin A, Millane J, Miller ML, Minaev NG, Mioduszewski S, Mischke A, Mitchell J, Mohanty B, Molnar L, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Nepali C, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okada H, Okorokov V, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Planinic M, Pluta J, Poljak N, Poskanzer AM, Potukuchi BV, Prindle D, Pruneau C, Pruthi NK, Putschke J, Raniwala R, Raniwala S, Ray RL, Reed R, Ridiger A, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Russcher MJ, Rykov V, Sahoo R, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sarsour M, Schambach J, Scharenberg RP, Schmitz N, Seger J, Selyuzhenkov I, Seyboth P, Shabetai A, Shahaliev E, Shao M, Sharma M, Shi SS, Shi XH, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Snellings R, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stadnik A, Stanislaus TD, Staszak D, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tlusty D, Tokarev M, Trainor TA, Tram VN, Trattner AL, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van Leeuwen M, Vander Molen AM, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasilevski IM, Vasiliev AN, Videbaek F, Vigdor SE, Viyogi YP, Vokal S, Voloshin SA, Wada M, Waggoner WT, Wang F, Wang G, Wang JS, Wang Q, Wang X, Wang XL, Wang Y, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu Y, Xu N, Xu QH, Xu Y, Xu Z, Yepes P, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang H, Zhang S, Zhang WM, Zhang Y, Zhang ZP, Zhao Y, Zhong C, Zhou J, Zoulkarneev R, Zoulkarneeva Y, and Zuo JX
Abstract: Three-particle azimuthal correlation measurements with a high transverse momentum trigger particle are reported for pp, d+Au, and Au+Au collisions at sqrt[s_{NN}]=200 GeV by the STAR experiment. Dijet structures are observed in pp, d+Au and peripheral Au+Au collisions. An additional structure is observed in central Au+Au data, signaling conical emission of correlated charged hadrons. The conical emission angle is found to be theta=1.37+/-0.02(stat)-0.07+0.06(syst), independent of p_{ perpendicular}.
Published: 2009
Full Text: View/download PDF

17. System-size independence of directed flow 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, Bueltmann S, Burton TP, Bystersky M, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Callner J, 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 SU, Clarke RF, Codrington MJ, Coffin JP, Cormier TM, Cosentino MR, Cramer JG, Crawford HJ, Das D, Dash S, Daugherity M, de Moura MM, Dedovich TG, Dephillips M, Derevschikov AA, Derradi de Souza R, Didenko L, Dietel T, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Du F, Dunlop JC, Dutta Mazumdar MR, 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, Gangadharan DR, Ganti MS, Garcia-Solis E, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Guimaraes KS, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Harris JW, He W, Heinz M, Heppelmann S, Hippolyte B, Hirsch A, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Huang HZ, Hughes EW, Humanic TJ, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jin F, Jones PG, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kaplan M, Keane D, Kechechyan A, Kettler D, Khodyrev VY, Kiryluk J, Kisiel A, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Kollegger T, Kopytine M, Kotchenda L, Kouchpil V, Kravtsov P, Kravtsov VI, Krueger K, Kuhn C, Kumar A, Kumar L, Kurnadi P, Lamont MA, Landgraf JM, Lange S, Lapointe S, Laue F, Lauret J, Lebedev A, Lednicky R, Lee CH, Levine MJ, Li C, Li Y, Lin G, Lin X, Lindenbaum SJ, Lisa MA, Liu F, Liu J, Liu L, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Ludlam T, Lynn D, Ma GL, Ma JG, Ma YG, Mahapatra DP, Majka R, Mangotra LK, Manweiler R, Margetis S, Markert C, Matis HS, Matulenko YA, McShane TS, Meschanin A, Millane J, Miller ML, Minaev NG, Mioduszewski S, Mischke A, Mitchell J, Mohanty B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Nepali C, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okada H, Okorokov V, Olson D, Pachr M, Pal SK, Panebratsev Y, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Planinic M, Pluta J, Poljak N, Porile N, Poskanzer AM, Potekhin M, Potukuchi BV, Prindle D, Pruneau C, Pruthi NK, Putschke J, Qattan IA, Raniwala R, Raniwala S, Ray RL, Ridiger A, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Russcher MJ, Rykov V, Sahoo R, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sarsour M, Schambach J, Scharenberg RP, Schmitz N, Seger J, Selyuzhenkov I, Seyboth P, Shabetai A, Shahaliev E, Shao M, Sharma M, Shi SS, Shi XH, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Snellings R, Sorensen P, Sowinski J, Spinka HM, Srivastava B, Stadnik A, Stanislaus TD, Staszak D, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tokarev M, Trainor TA, Tram VN, Trattner AL, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van der Kolk N, van Leeuwen M, Vander Molen AM, Varma R, Vasconcelos GM, Vasilevski IM, Vasiliev AN, Videbaek F, Vigdor SE, Viyogi YP, Vokal S, Voloshin SA, Wada M, Waggoner WT, Wang F, Wang G, Wang JS, Wang Q, Wang X, Wang XL, Wang Y, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu J, Wu Y, Xu N, Xu QH, Xu Y, Xu Z, Yang YY, Yepes P, Yoo IK, Yue Q, Zawisza M, Zbroszczyk H, Zhan W, Zhang H, Zhang S, Zhang WM, Zhang Y, Zhang ZP, Zhao Y, Zhong C, Zhou J, Zoulkarneev R, Zoulkarneeva Y, and Zuo JX
Abstract: We measure directed flow (v_{1}) for charged particles in Au+Au and Cu+Cu collisions at sqrt[s_{NN}]=200 and 62.4 GeV, as a function of pseudorapidity (eta), transverse momentum (p_{t}), and collision centrality, based on data from the STAR experiment. We find that the directed flow depends on the incident energy but, contrary to all available model implementations, not on the size of the colliding system at a given centrality. We extend the validity of the limiting fragmentation concept to v_{1} in different collision systems, and investigate possible explanations for the observed sign change in v_{1}(p_{t}).
Published: 2008
Full Text: View/download PDF

18. Forward neutral-pion transverse single-spin asymmetries in p + p collisions at sqrt[s] = 200 GeV.

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, Bland LC, Blyth SL, Bombara M, Bonner BE, Botje M, Bouchet J, Braidot E, Brandin AV, Bueltmann S, Burton TP, Bystersky M, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Callner J, Catu O, Cebra D, 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 SU, Clarke RF, Codrington MJ, Coffin JP, Cormier TM, Cosentino MR, Cramer JG, Crawford HJ, Das D, Dash S, Daugherity M, de Moura MM, Dedovich TG, DePhillips M, Derevschikov AA, Derradi de Souza R, Didenko L, Dietel T, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Du F, Dunlop JC, Dutta Mazumdar MR, Edwards WR, Efimov LG, 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 CA, Gaillard L, Ganti MS, Garcia-Solis E, Ghazikhanian V, Ghosh P, Gorbunov YN, Gordon A, Gos H, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Guimaraes KS, Gupta A, Gupta N, Guryn W, Haag B, Hallman TJ, Hamed A, Harris JW, He W, Heinz M, Henry TW, Heppelmann S, Hippolyte B, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Horner MJ, Huang HZ, Hughes EW, Humanic TJ, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jin F, Jones PG, Judd EG, Kabana S, Kajimoto K, Kang K, Kapitan J, Kaplan M, Keane D, Kechechyan A, Kettler D, Khodyrev VY, Kiryluk J, Kisiel A, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Kollegger T, Kopytine M, Kotchenda L, Kouchpil V, Kowalik KL, Kravtsov P, Kravtsov VI, Krueger K, Kuhn C, Kumar A, Kurnadi P, Lamont MA, Landgraf JM, Langdon J, Lange S, LaPointe S, Laue F, Lauret J, Lebedev A, Lednicky R, Lee CH, LeVine MJ, Li C, Li Q, Li Y, Lin G, Lin X, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Liu L, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Ludlam T, Lynn D, Ma GL, Ma JG, Ma YG, Mahapatra DP, Majka R, Mangotra LK, Manweiler R, Margetis S, Markert C, Matis HS, Matulenko YA, McShane TS, Meschanin A, Millane J, Miller C, Miller ML, Minaev NG, Mioduszewski S, Mischke A, Mitchell J, Mohanty B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Nepali C, Netrakanti PK, Ng MJ, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okada H, Okorokov V, Olson D, Pachr M, Pal SK, Panebratsev Y, Pavlinov AI, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Planinic M, Pluta J, Poljak N, Porile N, Poskanzer AM, Potekhin M, Potukuchi BV, Prindle D, Pruneau C, Pruthi NK, Putschke J, Qattan IA, Rakness G, Raniwala R, Raniwala S, Ray RL, Relyea D, Ridiger A, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Russcher MJ, Rykov V, Sahoo R, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sarsour M, Schambach J, Scharenberg RP, Schmitz N, Seger J, Selyuzhenkov I, Seyboth P, Shabetai A, Shahaliev E, Shao M, Sharma M, Shi XH, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Snellings R, Sorensen P, Sowinski J, Speltz J, Spinka HM, Srivastava B, Stadnik A, Stanislaus TD, Staszak D, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Z, Surrow B, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarnowsky T, Tatarowicz J, Thein D, Thomas JH, Tian J, Timmins AR, Timoshenko S, Tokarev M, Trainor TA, Tram VN, Trattner AL, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van der Kolk N, van Leeuwen M, Vander Molen AM, Varma R, Vasconcelos GM, Vasilevski IM, Vasiliev AN, Vernet R, Videbaek F, Vigdor SE, Viyogi YP, Vokal S, Voloshin SA, Wada M, Waggoner WT, Wang F, Wang G, Wang JS, Wang Q, Wang X, Wang XL, Wang Y, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Wu J, Wu Y, Xu N, Xu QH, Xu Z, Yepes P, Yoo IK, Yue Q, Zachariou N, Zawisza M, Zhan W, Zhang H, Zhang S, Zhang WM, Zhang Y, Zhang ZP, Zhao Y, Zhong C, Zhou J, Zoulkarneev R, Zoulkarneeva Y, and Zuo JX
Abstract: We report precision measurements of the Feynman x (xF) dependence, and first measurements of the transverse momentum (pT) dependence, of transverse single-spin asymmetries for the production of pi0 mesons from polarized proton collisions at sqrt[s] = 200 GeV. The xF dependence of the results is in fair agreement with perturbative QCD model calculations that identify orbital motion of quarks and gluons within the proton as the origin of the spin effects. Results for the pT dependence at fixed xF are not consistent with these same perturbative QCD-based calculations.
Published: 2008
Full Text: View/download PDF

19. Correlated strength in the nuclear spectral function.

Author: Rohe D, Armstrong CS, Asaturyan R, Baker OK, Bueltmann S, Carasco C, Day D, Ent R, Fenker HC, Garrow K, Gasparian A, Gueye P, Hauger M, Honegger A, Jourdan J, Keppel CE, Kubon G, Lindgren R, Lung A, Mack DJ, Mitchell JH, Mkrtchyan H, Mocelj D, Normand K, Petitjean T, Rondon O, Segbefia E, Sick I, Stepanyan S, Tang L, Tiefenbacher F, Vulcan WF, Warren G, Wood SA, Yuan L, Zeier M, Zhu H, and Zihlmann B
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 locates by direct measurement the correlated strength predicted by theory.
Published: 2004
Full Text: View/download PDF

20. First measurement of the double spin asymmetry in (-->)e(-->)p-->e(prime)pi(+)n in the resonance region.

Author: De Vita R, Anghinolfi M, Burkert VD, Dodge GE, Minehart R, Taiuti M, Weller H, Adams G, Amaryan MJ, Anciant E, Armstrong DS, Asavapibhop B, Asryan G, Audit G, Auger T, Avakian H, Bagdasaryan H, Ball JP, Barrow S, Battaglieri M, Beard K, Bektasoglu M, Bianchi N, Biselli AS, Boiarinov S, Bonner BE, Bosted P, Bouchigny S, Branford D, Brooks WK, Bueltmann S, Calarco JR, Capitani GP, Carman DS, Carnahan B, Cazes A, Ciciani L, Cole PL, Coleman A, Connelly J, Cords D, Corvisiero P, Crabb D, Crannell H, Cummings JP, De Sanctis E, Degtyarenko PV, Demirchyan R, Denizli H, Dennis L, Dharmawardane KV, Dhuga KS, Djalali C, Doughty D, Dragovitsch P, Dugger M, Dytman S, Eckhause M, Egiyan H, Egiyan KS, Elouadrhiri L, Empl A, Farhi L, Fatemi R, Feuerbach RJ, Ficenec J, Forest TA, Frolov V, Funsten H, Gaff SJ, Gai M, Garçon M, Gavalian G, Gilad S, Gilfoyle GP, Giovanetti KL, Girard P, Golovatch E, Griffioen K, Guidal M, Guillo M, Gyurjyan V, Hadjidakis C, Hancock D, Hardie J, Heddle D, Heimberg P, Hersman FW, Hicks K, Hicks RS, Holtrop M, Hu J, Hyde-Wright CE, Ishkanov BS, Ito MM, Jenkins D, Joo K, Kelley JH, Kellie JD, Khandaker M, Kim KY, Kim K, Kim W, Klein A, Klein FJ, Klusman M, Kossov M, Kramer LH, Kuang Y, Kuhn SE, Lachniet J, Laget JM, Lawrence D, Li J, Livingston K, Longhi A, Loukachine K, Lucas M, Major W, Manak JJ, Marchand C, McAleer S, McCarthy J, McNabb JW, Mecking BA, Mestayer MD, Meyer CA, Mikhailov K, Mirazita M, Miskimen R, Mokeev V, Muccifora V, Mueller J, Mutchler GS, Napolitano J, Nelson SO, Niculescu G, Niculescu I, Niczyporuk BB, Niyazov RA, Opper AK, O'Rielly GV, Osipenko M, Park K, Pasyuk E, Peterson G, Philips SA, Pivnyuk N, Pocanic D, Pogorelko O, Polli E, Pozdniakov S, Preedom BM, Price JW, Prok Y, Protopopescu D, Qin LM, Raue BA, Reolon AR, Riccardi G, Ricco G, Ripani M, Ritchie BG, Rock S, Ronchetti F, Rossi P, Rowntree D, Rubin PD, Sabatié F, Sabourov K, Salgado C, Sapunenko V, Sargsyan M, Schumacher RA, Serov VS, Shafi A, Sharabian YG, Shaw J, Skabelin AV, Smith ES, Smith T, Smith LC, Sober DI, Sorrell L, Spraker M, Stavinsky A, Stepanyan S, Stoler P, Strakovsky II, Taylor S, Tedeschi DJ, Thompson R, Todor L, Ungaro M, Vineyard MF, Vlassov AV, Wang K, Weinstein LB, Weisberg A, Weygand DP, Whisnant CS, Wolin E, Yegneswaran A, Yun J, Zhang B, Zhao J, and Zhou Z
Abstract: The double spin asymmetry in the (-->)e(-->)p --> e(prime)pi(+)n reaction has been measured for the first time in the resonance region for four-momentum transfer Q2 = 0.35-1.5 GeV(2). Data were taken at Jefferson Lab with the CLAS detector using a 2.6 GeV polarized electron beam incident on a polarized solid NH3 target. Comparison with predictions of phenomenological models shows strong sensitivity to resonance contributions. Helicity-1/2 transitions are found to be dominant in the second and third resonance regions. The measured asymmetry is consistent with a faster rise with Q(2) of the helicity asymmetry A1 for the F(15)(1680) resonance than expected from the analysis of the unpolarized data.
Published: 2002
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources

Refine your results

20 results on '"Bueltmann, S"'

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

2. Observation of Correlations between Spin and Transverse Momenta in Back-to-Back Dihadron Production at CLAS12.

3. Directed flow of identified particles in Au+Au collisions at √[SNN]=200 GeV at RHIC.

4. Strangeness enhancement in Cu-Cu and Au-Au collisions at √S(NN)=200 GeV.

5. Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at √S(NN)=200 GeV.

6. Measurement of the parity-violating longitudinal single-spin asymmetry for W± boson production in polarized proton-proton collisions at sqrt[s] = 500 GeV.

7. [Effect of applanation tonometry on precision of biometry measurements].

8. Measurement of the bottom quark contribution to nonphotonic electron production in p + p collisions at √s=200 GeV.

9. Three-particle coincidence of the long range pseudorapidity correlation in high energy nucleus-nucleus collisions.

10. Higher moments of net proton multiplicity distributions at RHIC.

11. Observation of an antimatter hypernucleus.

12. Azimuthal charged-particle correlations and possible local strong parity violation.

13. Growth of long range forward-backward multiplicity correlations with centrality in Au + Au collisions at square root of sNN = 200 GeV.

14. K/pi Fluctuations at relativistic energies.

15. Observation of two-source interference in the photoproduction reaction AuAu --> AuAurho0.

16. Indications of conical emission of charged hadrons at the BNL relativistic heavy ion collider.

17. System-size independence of directed flow measured at the BNL relativistic heavy-ion collider.

18. Forward neutral-pion transverse single-spin asymmetries in p + p collisions at sqrt[s] = 200 GeV.

19. Correlated strength in the nuclear spectral function.

20. First measurement of the double spin asymmetry in (-->)e(-->)p-->e(prime)pi(+)n in the resonance region.

Catalog

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

20 results on '"Bueltmann, S"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources