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Your search keyword '"Shanmuganathan, Prashanth"' showing total 4 results
Start Over Author "Shanmuganathan, Prashanth" Topic high energy physics - experiment
4 results on '"Shanmuganathan, Prashanth"'

1. The first moment of azimuthal anisotropy in nuclear collisions from AGS to LHC energies

Author

Singha, Subhash, Shanmuganathan, Prashanth, and Keane, Declan

Subjects
Nuclear Experiment, High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Theory
Abstract

We review topics related to the first moment of azimuthal anisotropy ($v_1$), commonly known as directed flow, focusing on both charged particles and identified particles from heavy-ion collisions. Beam energies from the highest available, at the CERN LHC, down to projectile kinetic energies per nucleon of a few GeV per nucleon, as studied in experiments at the Brookhaven AGS, fall within our scope. We focus on experimental measurements and on theoretical work where direct comparisons with experiment have been emphasized. The physics addressed or potentially addressed by this review topic includes the study of Quark Gluon Plasma, and more generally, investigation of the Quantum Chromodynamics phase diagram and the equation of state describing the accessible phases., Comment: Accepted for publication in Advances in High Energy Physics

Published
2016
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2. Beam-Energy and Centrality Dependence of Directed Flow of Identified Particles

Author

Shanmuganathan, Prashanth

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

These proceedings present directed flow ($v_1$) measurements in Au+Au collisions from STAR's Beam Energy Scan (BES) program at the Relativistic Heavy-Ion Collider, for $p$, $\bar{p}$, $\Lambda$, $\bar\Lambda$, $K^\pm$, $K^0_S$ and $\pi^\pm$. At intermediate centrality, protons show a minimum in directed flow slope, $dv_1/dy\,|_{y\leq0.8}$, as a function of beam energy. Proton $dv_1/dy$ changes sign near 10 GeV, and the directed flow for $\Lambda$ is consistent with the proton result. The directed flow slope for net protons shows a clear minimum at 14.5 GeV and becomes positive at beam energies below 10 GeV and above 30 GeV. New results for net-kaon directed flow slope resemble net protons from high energy down to 14.5 GeV, but remain negative at lower energies. The slope $dv_1/dy$ shows a strong centrality dependence, especially for $p$ and $\Lambda$ at the lower beam energies. Available model calculations are in poor agreement., Comment: for the STAR Collaboration

Published
2015
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3. Probing the Gluonic Structure of the Deuteron with J/ψ Photoproduction in d+Au Ultraperipheral Collisions

Author

Abdallah, Mohamed, Aboona, Bassam, Adam, Jaroslav, Adamczyk, Leszek, Adams, Joseph, Adkins, Kevin, Agakishiev, Geydar, Aggarwal, Ishu, Aggarwal, Madan, Ahammed, Zubayer, Aitbaev, A., Alekseev, Igor, Anderson, Derek, Aparin, Alexey, Aschenauer, Elke-Caroline, Ashraf, Muhammad Usman, Atetalla, Fareha, Attri, Anjali, Averichev, Georgy, Bairathi, Vipul, Baker, William, Ball Cap, Jonathan Gonzalo, Barish, Kenneth, Behera, Arabinda, Bellwied, Rene, Bhagat, Pratibha, Bhasin, Anju, Bielcik, Jaroslav, Bielcikova, Jana, Bordyuzhin, Igor, Brandenburg, James, Brandin, Andrei, Bunzarov, Ivan, Cai, Xiang-Zhou, Caines, Helen, Calderon de la Barca Sanchez, Manuel, Cebra, Daniel, Chakaberia, Irakli, Chaloupka, Petr, Chan, Brian, Chang, Feng-Han, Chang, Zilong, Chankova-Bunzarova, Nedialka, Chatterjee, Arghya, Chattopadhyay, Subhasis, Chen, Ding, Chen, Jia, Chen, Jinhui, Chen, Xiaolong, Chen, Zhenyu, Cheng, Jianping, Chevalier, Malia, Choudhury, Subikash, Christie, W., Christie, Bill, Chu, Xiaoxuan, Crawford, Hank, Csanad, Mate, Daugherity, Michael, Dedovich, Tatiana, Deppner, Ingo, Derevschikov, Anatoly, Dhamija, Arushi, Di Carlo, Launa, Didenko, Lidia, Dixit, Prabhupada, Dong, Xin, Drachenberg, James, Duckworth, Eddie, Dunlop, James, Elsey, Nicholas, Engelage, Jack, Eppley, Geary, Esumi, ShinIchi, Evdokimov, Olga, Ewigleben, Annika, Eyser, Oleg, Fatemi, Renee, Fawzi, Fares, Fazio, Salvatore, Federic, Pavol, Fedorisin, Jan, Feng, Chan-Jui, Feng, Yicheng, Filip, Peter, Finch, Evan, Fisyak, Yuri, Francisco, Audrey, Fu, Chuan, Fulek, Lukasz, Gagliardi, Carl, Galatyuk, Tatyana, Geurts, Frank, Ghimire, Navagyan, Gibson, Adam, Gopal, Krishan, Gou, Xingrui, Grosnick, David, Gupta, Anik, Guryn, Wlodek, Hamad, Ayman, Hamed, Ahmed, Han, Yiding, Harabasz, Szymon, Harasty, Matthew, Harris, John, Harrison, Hannah, He, Shu, He, Wanbing, He, Xionghong, He, Yang, Heppelmann, Samuel, Heppelmann, Steven, Herrmann, Norbert, Hoffman, Eric, Holub, Lukas, Hu, C., Hu, Q., Hu, Yu, Huang, Hao, Huang, Huan, Huang, Shengli, Huang, Te-Chuan, Huang, Xinjie, Huang, Yan, Humanic, T.J., Igo, George, Isenhower, Donald, Isshiki, M., Jacobs, William, Jena, Chitrasen, Jentsch, Alexander, Ji, Yuanjing, Jia, Jiangyong, Jiang, Kun, Ju, Xinyue, Judd, Eleanor, Kabana, Sonia, Kabir, Md Latiful, Kagamaster, Skipper, Kalinkin, Dmitry, Kang, Kejun, Kapukchyan, David, Kauder, Kolja, Ke, Hongwei, Keane, Declan, Kechechyan, Armen, Kelsey, Matthew, Khyzhniak, Yevheniia, Kikola, Daniel, Kim, Chong, Kimelman, Benjamin, Kincses, Daniel, Kisel, Ivan, Kiselev, Alexander, Knospe, Anders, Ko, Ho San, Kochenda, Leonid, Korobitsin, A., Kosarzewski, Leszek, Kramarik, Lukas, Kravtsov, Petr, Kumar, Lokesh, Kumar, Shyam, Kunnawalkam Elayavalli, Raghav, Kwasizur, Joseph, Lacey, Roy, Lan, Shaowei, Landgraf, Jeffery, Lauret, Jerome, Lebedev, Alexei, Lednicky, Richard, Lee, Jeong-Hun, Leung, Yue-Hang, Lewis, Nicole, Li, Changfeng, Li, Cheng, Li, Wei, Li, Xin, Li, Yuanjing, Liang, Xilin, Liang, Yue, Licenik, Robert, Lin, Ting, Lin, Yufu, Lisa, Mike, Liu, Feng, Liu, Huanzhao, Liu, Hui, Liu, Peifeng, Liu, Tong, Liu, Xiaoyu, Liu, Yanfang, Liu, Zhen, Ljubicic, Tonko, Llope, W.J., Longacre, R.S., Loyd, Erik, Lu, T., Lukow, Nicholas, Luo, Xiaofeng, Ma, Long, Ma, Rongrong, Ma, Yu-Gang, Magdy Abdelwahab Abdelrahman, Niseem, Mallick, Debasish, Manukhov, S.L., Margetis, Spiros, Markert, Christina, Matis, Howard, Mazer, Joel, Minaev, Nikolai, Mioduszewski, Saskia, Mohanty, Bedanga, Mondal, Mriganka, Mooney, Isaac, Morozov, Dmitry, Mukherjee, Ayon, Nagy, Marton, Nam, J.D., Nasim, Md., Nayak, Kishora, Neff, Dylan, Nelson, John, Nemes, Daniel, Nie, Maowu, Nigmatkulov, Grigory, Niida, Takafumi, Nishitani, Risa, Nogach, Larisa, Nonaka, Toshihiro, Nunes, Ana Sofia, Odyniec, Grazyna, Ogawa, Akio, Oh, Saehanseul, Okorokov, Vitalii, Okubo, K., Page, Brian, Pak, Robert, Pan, Jinjin, Pandav, Ashish, Pandey, Ashutosh, Panebratsev, Yuri, Parfenov, Petr, Pinsky, Lawrence, Paul, A., Pawlik, Bogdan, Pawlowska, Diana, Perkins, Chris, Pluta, Jan, Pokhrel, Babu, Ponimatkin, Georgij, Porter, Jeff, Posik, Matthew, Prozorova, Veronika, Pruthi, Navneet Kumar, Przybycien, Mariusz, Putschke, Joern, Qiu, Hao, Quintero, Amilkar, Racz, Cameron, Radhakrishnan, Sooraj, Raha, Nandita, Ray, Lanny, Reed, Rosi, Ritter, Hans Georg, Robotkova, Monika, Rogachevskiy, Oleg, Romero, Juan, Roy, Diptanil, Ruan, Lijuan, Rusnak, Jan, Sahoo, Aswini, Sahoo, Nihar, Sako, Hiroyuki, Salur, Sevil, Samigullin, E., Sandweiss, Jack, Sato, Susumu, Schmidke, Bill, Schmitz, Norbert, Schweid, Benjamin, Seck, Florian, Seger, Janet, Sergeeva, Maria, Seto, Richard, Seyboth, Peter, Shah, Neha, Shahaliev, Ehtiram, Shanmuganathan, Prashanth, Shao, Ming, Shao, Tianhao, Sharma, R., Sheikh, Ashik Ikbal, Shen, Diyu, Shi, Shusu, Shi, Yingying, Shou, Qi-Ye, Sichtermann, Ernst, Sikora, Rafal, Simko, Miroslav, Singh, Jagbir, Singha, Subhash, Sorensen, Paul, Sinha, P., Skoby, Michael, Smirnov, Nikolai, Soehngen, Yannick, Solyst, William, Song, Youqi, Spinka, H.M., Srivastava, Brijesh, Stanislaus, Shirvel, Stefaniak, Maria, Stewart, David, Strikhanov, Mikhail, Stringfellow, Blair, Suaide, Alexandre Alarcon, Sumbera, Michal, Summa, Branden, Sun, Xiangming, Sun, Xu, Sun, Yongjie, Sun, Yuliang, Surrow, Bernd, Svirida, Dmitry, Sweger, Zachary, Szymanski, Pawel, Tang, Aihong, Tang, Zebo, Taranenko, Arkadiy, Tarnowsky, Terry, Thomas, J.H., Timmins, Anthony, Tlusty, David, Todoroki, Takahito, Tokarev, Michael, Tomkiel, Catherine, Trentalange, Steven, Tribble, Robert, Tribedy, Prithwish, Tripathy, Srikanta Kumar, Truhlar, Tomas, Trzeciak, Barbara, Tsai, Oleg, Tu, Zhoudunming (Kong), Ullrich, Thomas, Underwood, Dave, Upsal, Isaac, Van Buren, Gene, Vanek, Jan, Vasiliev, Alexander, Vassiliev, Iouri, Verkest, Veronica, Videbaek, Flemming, Vokal, Stanislav, Voloshin, Sergei, Wang, Fuqiang, Wang, Gang, Wang, Jiansong, Wang, Pengfei, Wang, Xiaofeng, Wang, Yaping, Wang, Yi, Wang, Zhen, Webb, Jason, Weidenkaff, Philipp, Wen, Liwen, Westfall, Gary, Wieman, Howard, Wissink, Scott, Witt, Richard, Wu, Jin, Wu, Junlin, Wu, Yang, Xi, Baoshan, Xiao, Zhigang, Xie, Guannan, Xie, Wei, Xu, Haojie, Xu, Nu, Xu, Qinghua, Xu, Yike, Xu, Zhangbu, Xu, Zhiwan, Yan, Gaoguo, Yang, Chi, Yang, Qian, Yang, Shuai, Yang, Yi, Ye, Zaochen, Ye, Zhenyu, Yi, Li, Yip, Kin, Yu, Yi, Zbroszczyk, Hanna, Zha, Wangmei, Zhang, ChunJian, Zhang, Dingwei, Zhang, Jinlong, Zhang, Xiaoping, Zhao, F., Zhang, Shenghui, Zhang, Song, Zhang, Yapeng, Zhang, Yifei, Zhang, Yu, Zhang, Zhe-Jia, Zhang, Zhengqiao, Zhang, Ziyue, Zhao, Jie, Zhao, M., Zhou, Chensheng, Zhou, Yingjie, Zhu, Xianglei, Zurek, Maria, and Zyzak, Maksym

Subjects
Nuclear Theory, nucl-th, hep-ex, FOS: Physical sciences, nucl-ex, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), Nuclear Physics - Theory, High Energy Physics::Experiment, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, Particle Physics - Experiment
Abstract

Understanding gluon density distributions and how they are modified in nuclei are among the most important goals in nuclear physics. In recent years, diffractive vector meson production measured in ultra-peripheral collisions (UPCs) at heavy-ion colliders has provided a new tool for probing the gluon density. In this Letter, we report the first measurement of $J/\psi$ photoproduction off the deuteron in UPCs at the center-of-mass energy $\sqrt{s_{_{\rm NN}}}=200~\rm GeV$ in d$+$Au collisions. The differential cross section as a function of momentum transfer $-t$ is measured. In addition, data with a neutron tagged in the deuteron-going Zero-Degree Calorimeter is investigated for the first time, which is found to be consistent with the expectation of incoherent diffractive scattering at low momentum transfer. Theoretical predictions based on the Color Glass Condensate saturation model and the gluon shadowing model are compared with the data quantitatively. A better agreement with the saturation model has been observed. With the current measurement, the results are found to be directly sensitive to the gluon density distribution of the deuteron and the deuteron breakup, which provides insights into the nuclear gluonic structure., Comment: Final published version Phys. Rev. Lett. 128, 122303

Published
2021

4. Longitudinal Double-Spin Asymmetries for Dijet Production at Intermediate Pseudorapidity in Polarized $pp$ Collisions at $\sqrt{s}$ = 200 GeV

Author

Adam, Jaroslav, Leszek Adamczyk, Adams, Joseph, Adkins, Kevin, Agakishiev, Geydar, Aggarwal, Madan, Ahammed, Zubayer, Ajitanand, Nuggehalli, Alekseev, Igor, Anderson, Derek, Aoyama, Ryo, Aparin, Alexey, Arkhipkin, Dmitry, Aschenauer, Elke-Caroline, Ashraf, Muhammad Usman, Atetalla, Fareha, Attri, Anjali, Averichev, Georgy, Bai, Xiaozhi, Bairathi, Vipul, Barish, Kenneth, Bassill, Aj, Behera, Arabinda, Bellwied, Rene, Bhasin, Anju, Bhati, Ashok, Bielcik, Jaroslav, Bielcikova, Jana, Bland, Leslie, Bordyuzhin, Igor, Brandenburg, James, Brandin, Andrei, Brown, Daniel, Bryslawskyj, Jason, Bunzarov, Ivan, Butterworth, Joseph, Caines, Helen, Calderon La Barca Sanchez, Manuel, Campbell, John, Cebra, Daniel, Chakaberia, Irakli, Chaloupka, Petr, Chang, Feng-Han, Chang, Zilong, Chankova-Bunzarova, Nedialka, Chatterjee, Arghya, Chattopadhyay, Subhasis, Chen, Jinhui, Chen, Xiaolong, Chen, Xurong, Cheng, Jianping, Cherney, Mike, Christie, Bill, Contin, Giacomo, Crawford, Hank, Das, Sabita, Dedovich, Tatiana, Deppner, Ingo, Derevschikov, Anatoly, Didenko, Lidia, Dilks, Christopher, Dong, Xin, Drachenberg, James, Dunlop, James, Efimov, Leonid, Elsey, Nicholas, Engelage, Jack, Eppley, Geary, Esha, Roli, Esumi, Shinichi, Evdokimov, Olga, Ewigleben, Justin, Eyser, Oleg, Fatemi, Renee, Fazio, Salvatore, Federic, Pavol, Federicova, Pavla, Fedorisin, Jan, Filip, Peter, Finch, Evan, Fisyak, Yuri, Flores, Chris, Fulek, Lukasz, Gagliardi, Carl, Galatyuk, Tatyana, Geurts, Frank, Gibson, Adam, Grosnick, David, Gunarathne, Devika, Guo, Yi, Gupta, Anik, Guryn, Wlodek, Hamad, Ayman, Hamed, Ahmed, Harlenderova, Alena, Harris, John, He, Liang, Heppelmann, Steven, Heppelmann, Samuel, Herrmann, Norbert, Hirsch, Andy, Holub, Lukas, Horvat, Stephen, Huang, Xinjie, Huang, Bingchu, Huang, Shengli, Huang, Huan, Huang, Te-Chuan, Humanic, Tom, Huo, Peng, Igo, George, Jacobs, William, Jentsch, Alexander, Jia, Jiangyong, Jiang, Kun, Jowzaee, Sedigheh, Judd, Eleanor, Kabana, Sonya, Kalinkin, Dmitry, Kang, Kejun, Kapukchyan, David, Kauder, Kolja, Ke, Hongwei, Keane, Declan, Kechechyan, Armen, Kikola, Daniel, Kim, Chong, Kinghorn, Todd, Kisel, Ivan, Kisiel, Adam, Kochenda, Leonid, Kosarzewski, Leszek, Kraishan, Amani, Kramarik, Lukas, Krauth, Luke, Kravtsov, Peter, Krueger, Keith, Kulathunga, Nalinda, Kumar, Sumit, Kumar, Lokesh, Kvapil, Jakub, Kwasizur, Joseph, Lacey, Roy, Landgraf, Jeffery, Lauret, Jerome, Lebedev, Alexei, Lednicky, Richard, Lee, Jeong-Hun, Li, Xin, Li, Cheng, Li, Wei, Li, Yuanjing, Liang, Yue, Lidrych, Jindrich, Lin, Ting, Lipiec, Andrzej, Lisa, Mike, Liu, Feng, Liu, Peifeng, Liu, Huanzhao, Liu, Yanfang, Ljubicic, Tonko, Llope, Wj, Lomnitz, Michael, Longacre, Ron, Luo, Xiaofeng, Luo, Siwei, Ma, Guo-Liang, Ma, Yu-Gang, Ma, Long, Ma, Rongrong, Magdy Abdelwahab Abdelrahman, Niseem, Majka, Richard, Mallick, Debasish, Margetis, Spiros, Markert, Christina, Matis, Howard, Matonoha, Oliver, Mayes, David, Mazer, Joel, Meehan, Kathryn, Mei, Jincheng, Minaev, Nikolai, Mioduszewski, Saskia, Mishra, Debadeepti, Mohanty, Bedanga, Mondal, Mriganka, Mooney, Isaac, Morozov, Dmitry, Nasim, Md, Negrete, Jesus, Nelson, John, Nemes, Daniel, Nie, Maowu, Nigmatkulov, Grigory, Niida, Takafumi, Nogach, Larisa, Nonaka, Toshihiro, Nurushev, Sandibek, Odyniec, Grazyna, Ogawa, Akio, Oh, Kunsu, Oh, Saehanseul, Okorokov, Vitalii, Olvitt Jr, Daniel, Page, Brian, Pak, Robert, Panebratsev, Yuri, Pawlik, Bogdan, Pei, Hua, Perkins, Chris, Pluta, Jan, Porter, Jeff, Posik, Matthew, Pruthi, Navneet Kumar, Przybycien, Mariusz, Putschke, Joern, Quintero, Amilkar, Radhakrishnan, Sooraj, Ramachandran, Suvarna, Ray, Lanny, Reed, Rosi, Ritter, Hans Georg, Roberts, Jay, Rogachevskiy, Oleg, Romero, Juan, Ruan, Lijuan, Rusnak, Jan, Rusnakova, Olga, Sahoo, Nihar, Sahu, Pradip Kumar, Salur, Sevil, Sandweiss, Jack, Schambach, Joachim, Schmah, Alexander, Schmidke, Bill, Schmitz, Norbert, Schweid, Benjamin, Seck, Florian, Seger, Janet, Sergeeva, Maria, Seto, Richard, Seyboth, Peter, Shah, Neha, Shahaliev, Ehtiram, Shanmuganathan, Prashanth, Shao, Ming, Shen, Wen-Qing, Shen, Fuwang, Shi, Shusu, Shou, Qi-Ye, Sichtermann, Ernst, Siejka, Sebastian, Sikora, Rafal, Simko, Miroslav, Singha, Subhash, Smirnov, Nikolai, Smirnov, Dmitri, Solyst, William, Sorensen, Paul, Spinka, Hal, Srivastava, Brijesh, Stanislaus, Shirvel, Stewart, David, Strikhanov, Mikhail, Stringfellow, Blair, Suaide, Alexandre Alarcon, Sugiura, Tetsuro, Sumbera, Michal, Summa, Branden, Sun, Yongjie, Sun, Xu, Sun, Xiangming, Surrow, Bernd, Svirida, Dmitry, Szymanski, Pawel, Tang, Zebo, Tang, Aihong, Taranenko, Arkadiy, Tarnowsky, Terry, Thomas, Jim, Timmins, Anthony, Tlusty, David, Todoroki, Takahito, Tokarev, Michael, Tomkiel, Catherine, Trentalange, Steven, Tribble, Robert, Tribedy, Prithwish, Tripathy, Srikanta Kumar, Tsai, Oleg, Tu, Biao, Ullrich, Thomas, Underwood, Dave, Upsal, Isaac, Buren, Gene, Vanek, Jan, Vasiliev, Alexander, Vassiliev, Iouri, Videbaek, Flemming, Vokal, Stanislav, Voloshin, Sergei, Vossen, Anselm, Wang, Gang, Wang, Yaping, Wang, Fuqiang, Wang, Yi, Webb, Jason, Wen, Liwen, Westfall, Gary, Wieman, Howard, Wissink, Scott, Witt, Richard, Wu, Yang, Xiao, Zhigang, Xie, Guannan, Xie, Wei, Xu, Qinghua, Xu, Zhangbu, Xu, Ji, Xu, Yi-Fei, Xu, Nu, Yang, Shuai, Yang, Chi, Yang, Qian, Yang, Yi, Ye, Zhenyu, Ye, Zaochen, Yi, Li, Yip, Kin, Yoo, In-Kwon, Yu, Ning, Zbroszczyk, Hanna, Zha, Wangmei, Zhang, Zhengqiao, Zhang, Liang, Zhang, Yifei, Zhang, Xiaoping, Zhang, Jinlong, Zhang, Song, Zhang, Shenghui, Zhao, Jie, Zhong, Chen, Zhou, Chensheng, Zhou, Long, Zhu, Zhanwen, Zhu, Xianglei, and Zyzak, Maksym

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract

We present the first measurements of the longitudinal double-spin asymmetry $A_{LL}$ for dijets with at least one jet reconstructed within the pseudorapidity range $0.8 < \eta < 1.8$. The dijets were measured in polarized $pp$ collisions at a center-of-mass energy $\sqrt{s}$ = 200 GeV. Values for $A_{LL}$ are determined for several distinct event topologies, defined by the jet pseudorapidities, and span a range of parton momentum fraction $x$ down to $x \sim$ 0.01. The measured asymmetries are found to be consistent with the predictions of global analyses that incorporate the results of previous RHIC measurements. They will provide new constraints on $\Delta g(x)$ in this poorly constrained region when included in future global analyses.

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